diff --git a/.env b/.env
index fbeafeba..1a6a7e78 100644
--- a/.env
+++ b/.env
@@ -9,6 +9,12 @@ ANTHROPIC_API_KEY=
 # For using Voyage
 VOYAGE_API_KEY=
 
+# For using Replicate
+REPLICATE_API_KEY=
+
+# For using Ollama
+OLLAMA_HOST_URL=
+
 # For using GPT on Azure
 AZURE_OPENAI_BASEURL=
 AZURE_OPENAI_DEPLOYMENT=
diff --git a/examples/chat-claude-anthropic.php b/examples/chat-claude-anthropic.php
index 84a449a3..7aa2516c 100755
--- a/examples/chat-claude-anthropic.php
+++ b/examples/chat-claude-anthropic.php
@@ -1,10 +1,10 @@
 <?php
 
-use PhpLlm\LlmChain\Anthropic\Model\Claude;
-use PhpLlm\LlmChain\Anthropic\Platform\Anthropic;
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Model\Language\Claude;
+use PhpLlm\LlmChain\Platform\Anthropic;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
diff --git a/examples/chat-gpt-azure.php b/examples/chat-gpt-azure.php
index 15628fab..73e3c3a0 100755
--- a/examples/chat-gpt-azure.php
+++ b/examples/chat-gpt-azure.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\Azure;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\Azure;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -24,7 +23,7 @@
     $_ENV['AZURE_OPENAI_VERSION'],
     $_ENV['AZURE_OPENAI_KEY'],
 );
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $chain = new Chain($llm);
 $messages = new MessageBag(
diff --git a/examples/chat-gpt-openai.php b/examples/chat-gpt-openai.php
index e241a348..ec2d14df 100755
--- a/examples/chat-gpt-openai.php
+++ b/examples/chat-gpt-openai.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -18,7 +17,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini(), [
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI, [
     'temperature' => 0.5, // default options for the model
 ]);
 
diff --git a/examples/chat-llama-ollama.php b/examples/chat-llama-ollama.php
new file mode 100755
index 00000000..551b8f2d
--- /dev/null
+++ b/examples/chat-llama-ollama.php
@@ -0,0 +1,29 @@
+<?php
+
+use PhpLlm\LlmChain\Chain;
+use PhpLlm\LlmChain\Message\Message;
+use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Model\Language\Llama;
+use PhpLlm\LlmChain\Platform\Ollama;
+use Symfony\Component\Dotenv\Dotenv;
+use Symfony\Component\HttpClient\HttpClient;
+
+require_once dirname(__DIR__).'/vendor/autoload.php';
+(new Dotenv())->loadEnv(dirname(__DIR__).'/.env');
+
+if (empty($_ENV['OLLAMA_HOST_URL'])) {
+    echo 'Please set the OLLAMA_HOST_URL environment variable.'.PHP_EOL;
+    exit(1);
+}
+
+$platform = new Ollama(HttpClient::create(), $_ENV['OLLAMA_HOST_URL']);
+$llm = new Llama($platform);
+
+$chain = new Chain($llm);
+$messages = new MessageBag(
+    Message::forSystem('You are a helpful assistant.'),
+    Message::ofUser('Tina has one brother and one sister. How many sisters do Tina\'s siblings have?'),
+);
+$response = $chain->call($messages);
+
+echo $response->getContent().PHP_EOL;
diff --git a/examples/chat-llama-replicate.php b/examples/chat-llama-replicate.php
new file mode 100755
index 00000000..491129af
--- /dev/null
+++ b/examples/chat-llama-replicate.php
@@ -0,0 +1,29 @@
+<?php
+
+use PhpLlm\LlmChain\Chain;
+use PhpLlm\LlmChain\Message\Message;
+use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Model\Language\Llama;
+use PhpLlm\LlmChain\Platform\Replicate;
+use Symfony\Component\Dotenv\Dotenv;
+use Symfony\Component\HttpClient\HttpClient;
+
+require_once dirname(__DIR__).'/vendor/autoload.php';
+(new Dotenv())->loadEnv(dirname(__DIR__).'/.env');
+
+if (empty($_ENV['REPLICATE_API_KEY'])) {
+    echo 'Please set the REPLICATE_API_KEY environment variable.'.PHP_EOL;
+    exit(1);
+}
+
+$platform = new Replicate(HttpClient::create(), $_ENV['REPLICATE_API_KEY']);
+$llm = new Llama($platform);
+
+$chain = new Chain($llm);
+$messages = new MessageBag(
+    Message::forSystem('You are a helpful assistant.'),
+    Message::ofUser('Tina has one brother and one sister. How many sisters do Tina\'s siblings have?'),
+);
+$response = $chain->call($messages);
+
+echo $response->getContent().PHP_EOL;
diff --git a/examples/chat-o1-openai.php b/examples/chat-o1-openai.php
index ef86ee1f..a6b62181 100755
--- a/examples/chat-o1-openai.php
+++ b/examples/chat-o1-openai.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -23,7 +22,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::o1Preview());
+$llm = new Gpt($platform, Gpt::O1_PREVIEW);
 
 $prompt = <<<PROMPT
 I want to build a Symfony app in PHP 8.2 that takes user questions and looks them
diff --git a/examples/embeddings-openai.php b/examples/embeddings-openai.php
index 0b4f833e..5c875677 100755
--- a/examples/embeddings-openai.php
+++ b/examples/embeddings-openai.php
@@ -1,8 +1,7 @@
 <?php
 
-use PhpLlm\LlmChain\OpenAI\Model\Embeddings;
-use PhpLlm\LlmChain\OpenAI\Model\Embeddings\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Embeddings\OpenAI as Embeddings;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI as Platform;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -14,8 +13,8 @@
     exit(1);
 }
 
-$platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$embeddings = new Embeddings($platform, Version::textEmbedding3Small());
+$platform = new Platform(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
+$embeddings = new Embeddings($platform);
 
 $vector = $embeddings->create(<<<TEXT
     Once upon a time, there was a country called Japan. It was a beautiful country with a lot of mountains and rivers.
diff --git a/examples/embeddings-voyage.php b/examples/embeddings-voyage.php
index 306537d2..1e641b21 100755
--- a/examples/embeddings-voyage.php
+++ b/examples/embeddings-voyage.php
@@ -1,7 +1,7 @@
 <?php
 
-use PhpLlm\LlmChain\Voyage\Model\Voyage;
-use PhpLlm\LlmChain\Voyage\Platform\Voyage as VoyagePlatform;
+use PhpLlm\LlmChain\Model\Embeddings\Voyage;
+use PhpLlm\LlmChain\Platform\Voyage as Platform;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -13,7 +13,7 @@
     exit(1);
 }
 
-$platform = new VoyagePlatform(HttpClient::create(), $_ENV['VOYAGE_API_KEY']);
+$platform = new Platform(HttpClient::create(), $_ENV['VOYAGE_API_KEY']);
 $embeddings = new Voyage($platform);
 
 $vector = $embeddings->create(<<<TEXT
diff --git a/examples/image-describer-binary.php b/examples/image-describer-binary.php
index f1343d80..77aca01b 100755
--- a/examples/image-describer-binary.php
+++ b/examples/image-describer-binary.php
@@ -4,9 +4,8 @@
 use PhpLlm\LlmChain\Message\Content\Image;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -19,7 +18,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $chain = new Chain($llm);
 $messages = new MessageBag(
diff --git a/examples/image-describer-url.php b/examples/image-describer-url.php
index afa678c1..c51878ba 100755
--- a/examples/image-describer-url.php
+++ b/examples/image-describer-url.php
@@ -4,9 +4,8 @@
 use PhpLlm\LlmChain\Message\Content\Image;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
@@ -19,7 +18,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $chain = new Chain($llm);
 $messages = new MessageBag(
diff --git a/examples/store-mongodb-similarity-search.php b/examples/store-mongodb-similarity-search.php
index 0a2101db..90c35d68 100755
--- a/examples/store-mongodb-similarity-search.php
+++ b/examples/store-mongodb-similarity-search.php
@@ -7,10 +7,9 @@
 use PhpLlm\LlmChain\DocumentEmbedder;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Embeddings;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Embeddings\OpenAI as Embeddings;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI as Platform;
 use PhpLlm\LlmChain\Store\MongoDB\Store;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\SimilaritySearch;
@@ -54,14 +53,14 @@
 }
 
 // create embeddings for documents
-$platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
+$platform = new Platform(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
 $embedder = new DocumentEmbedder($embeddings = new Embeddings($platform), $store);
 $embedder->embed($documents);
 
 // initialize the index
 $store->initialize();
 
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $similaritySearch = new SimilaritySearch($embeddings, $store);
 $toolBox = new ToolBox(new ToolAnalyzer(), [$similaritySearch]);
diff --git a/examples/store-pinecone-similarity-search.php b/examples/store-pinecone-similarity-search.php
index 547beb7b..5aa09144 100755
--- a/examples/store-pinecone-similarity-search.php
+++ b/examples/store-pinecone-similarity-search.php
@@ -6,10 +6,9 @@
 use PhpLlm\LlmChain\DocumentEmbedder;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Embeddings;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Embeddings\OpenAI as Embeddings;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI as Platform;
 use PhpLlm\LlmChain\Store\Pinecone\Store;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\SimilaritySearch;
@@ -48,11 +47,11 @@
 }
 
 // create embeddings for documents
-$platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
+$platform = new Platform(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
 $embedder = new DocumentEmbedder($embeddings = new Embeddings($platform), $store);
 $embedder->embed($documents);
 
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $similaritySearch = new SimilaritySearch($embeddings, $store);
 $toolBox = new ToolBox(new ToolAnalyzer(), [$similaritySearch]);
diff --git a/examples/stream-claude-anthropic.php b/examples/stream-claude-anthropic.php
index 08f12fcf..9c6836ea 100644
--- a/examples/stream-claude-anthropic.php
+++ b/examples/stream-claude-anthropic.php
@@ -1,10 +1,10 @@
 <?php
 
-use PhpLlm\LlmChain\Anthropic\Model\Claude;
-use PhpLlm\LlmChain\Anthropic\Platform\Anthropic;
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Model\Language\Claude;
+use PhpLlm\LlmChain\Platform\Anthropic;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\HttpClient;
 
diff --git a/examples/stream-gpt-openai.php b/examples/stream-gpt-openai.php
index a668b0ab..c6565ea7 100644
--- a/examples/stream-gpt-openai.php
+++ b/examples/stream-gpt-openai.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use Symfony\Component\Dotenv\Dotenv;
 use Symfony\Component\HttpClient\EventSourceHttpClient;
 
@@ -18,7 +17,7 @@
 }
 
 $platform = new OpenAI(new EventSourceHttpClient(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $chain = new Chain($llm);
 $messages = new MessageBag(
diff --git a/examples/structured-output-clock.php b/examples/structured-output-clock.php
index 6281f37f..475f4c6b 100755
--- a/examples/structured-output-clock.php
+++ b/examples/structured-output-clock.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\StructuredOutput\ChainProcessor as StructuredOutputProcessor;
 use PhpLlm\LlmChain\StructuredOutput\ResponseFormatFactory;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor as ToolProcessor;
@@ -28,7 +27,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $clock = new Clock(new SymfonyClock());
 $toolBox = new ToolBox(new ToolAnalyzer(), [$clock]);
diff --git a/examples/structured-output-math.php b/examples/structured-output-math.php
index 81b46f47..c833f2ef 100644
--- a/examples/structured-output-math.php
+++ b/examples/structured-output-math.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\StructuredOutput\ChainProcessor;
 use PhpLlm\LlmChain\StructuredOutput\ResponseFormatFactory;
 use PhpLlm\LlmChain\Tests\Fixture\StructuredOutput\MathReasoning;
@@ -24,7 +23,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 $serializer = new Serializer([new ObjectNormalizer()], [new JsonEncoder()]);
 
 $processor = new ChainProcessor(new ResponseFormatFactory(), $serializer);
diff --git a/examples/toolbox-clock.php b/examples/toolbox-clock.php
index 99f1a8a7..95cca892 100755
--- a/examples/toolbox-clock.php
+++ b/examples/toolbox-clock.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\Clock;
 use PhpLlm\LlmChain\ToolBox\ToolAnalyzer;
@@ -23,7 +22,7 @@
 }
 
 $platform = new OpenAI(HttpClient::create(), $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $clock = new Clock(new SymfonyClock());
 $toolBox = new ToolBox(new ToolAnalyzer(), [$clock]);
diff --git a/examples/toolbox-serpapi.php b/examples/toolbox-serpapi.php
index 197ee809..94162e5e 100755
--- a/examples/toolbox-serpapi.php
+++ b/examples/toolbox-serpapi.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\SerpApi;
 use PhpLlm\LlmChain\ToolBox\ToolAnalyzer;
@@ -22,7 +21,7 @@
 }
 $httpClient = HttpClient::create();
 $platform = new OpenAI($httpClient, $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $serpApi = new SerpApi($httpClient, $_ENV['SERP_API_KEY']);
 $toolBox = new ToolBox(new ToolAnalyzer(), [$serpApi]);
diff --git a/examples/toolbox-weather.php b/examples/toolbox-weather.php
index 8dba9b0a..2729f785 100755
--- a/examples/toolbox-weather.php
+++ b/examples/toolbox-weather.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\OpenMeteo;
 use PhpLlm\LlmChain\ToolBox\ToolAnalyzer;
@@ -23,7 +22,7 @@
 
 $httpClient = HttpClient::create();
 $platform = new OpenAI($httpClient, $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $wikipedia = new OpenMeteo($httpClient);
 $toolBox = new ToolBox(new ToolAnalyzer(), [$wikipedia]);
diff --git a/examples/toolbox-wikipedia.php b/examples/toolbox-wikipedia.php
index 06e3362f..9af41672 100755
--- a/examples/toolbox-wikipedia.php
+++ b/examples/toolbox-wikipedia.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\Wikipedia;
 use PhpLlm\LlmChain\ToolBox\ToolAnalyzer;
@@ -23,7 +22,7 @@
 
 $httpClient = HttpClient::create();
 $platform = new OpenAI($httpClient, $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $wikipedia = new Wikipedia($httpClient);
 $toolBox = new ToolBox(new ToolAnalyzer(), [$wikipedia]);
diff --git a/examples/toolbox-youtube.php b/examples/toolbox-youtube.php
index f3a63c8d..c79a41bc 100755
--- a/examples/toolbox-youtube.php
+++ b/examples/toolbox-youtube.php
@@ -3,9 +3,8 @@
 use PhpLlm\LlmChain\Chain;
 use PhpLlm\LlmChain\Message\Message;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform\OpenAI;
+use PhpLlm\LlmChain\Model\Language\Gpt;
+use PhpLlm\LlmChain\Platform\OpenAI\OpenAI;
 use PhpLlm\LlmChain\ToolBox\ChainProcessor;
 use PhpLlm\LlmChain\ToolBox\Tool\YouTubeTranscriber;
 use PhpLlm\LlmChain\ToolBox\ToolAnalyzer;
@@ -23,7 +22,7 @@
 
 $httpClient = HttpClient::create();
 $platform = new OpenAI($httpClient, $_ENV['OPENAI_API_KEY']);
-$llm = new Gpt($platform, Version::gpt4oMini());
+$llm = new Gpt($platform, Gpt::GPT_4O_MINI);
 
 $transcriber = new YouTubeTranscriber($httpClient);
 $toolBox = new ToolBox(new ToolAnalyzer(), [$transcriber]);
diff --git a/ollama.http b/ollama.http
new file mode 100644
index 00000000..ee41eae7
--- /dev/null
+++ b/ollama.http
@@ -0,0 +1,13 @@
+### Llama 3.2 on Ollama
+POST http://localhost:11434/api/chat
+
+{
+  "model": "llama3.2",
+  "messages": [
+    {
+      "role": "user",
+      "content": "why is the sky blue?"
+    }
+  ],
+  "stream": false
+}
diff --git a/src/Anthropic/Model/Claude/Version.php b/src/Anthropic/Model/Claude/Version.php
deleted file mode 100644
index 83beb2fc..00000000
--- a/src/Anthropic/Model/Claude/Version.php
+++ /dev/null
@@ -1,36 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace PhpLlm\LlmChain\Anthropic\Model\Claude;
-
-use Webmozart\Assert\Assert;
-
-final readonly class Version
-{
-    public function __construct(
-        public string $name,
-    ) {
-        Assert::stringNotEmpty($name);
-    }
-
-    public static function haiku3(): self
-    {
-        return new self('claude-3-haiku-20240307');
-    }
-
-    public static function sonnet3(): self
-    {
-        return new self('claude-3-sonnet-20240229');
-    }
-
-    public static function sonnet35(): self
-    {
-        return new self('claude-3-5-sonnet-20240620');
-    }
-
-    public static function opus(): self
-    {
-        return new self('claude-3-opus-20240229');
-    }
-}
diff --git a/src/Anthropic/Platform.php b/src/Anthropic/Platform.php
deleted file mode 100644
index f02f8626..00000000
--- a/src/Anthropic/Platform.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace PhpLlm\LlmChain\Anthropic;
-
-interface Platform
-{
-    /**
-     * @param array<string, mixed> $body
-     *
-     * @return array<string, mixed>
-     */
-    public function request(array $body): iterable;
-}
diff --git a/src/OpenAI/Model/Embeddings.php b/src/Model/Embeddings/OpenAI.php
similarity index 71%
rename from src/OpenAI/Model/Embeddings.php
rename to src/Model/Embeddings/OpenAI.php
index 249c83c8..ad9b37fd 100644
--- a/src/OpenAI/Model/Embeddings.php
+++ b/src/Model/Embeddings/OpenAI.php
@@ -2,20 +2,22 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\OpenAI\Model;
+namespace PhpLlm\LlmChain\Model\Embeddings;
 
 use PhpLlm\LlmChain\Document\Vector;
 use PhpLlm\LlmChain\EmbeddingsModel;
-use PhpLlm\LlmChain\OpenAI\Model\Embeddings\Version;
-use PhpLlm\LlmChain\OpenAI\Platform;
+use PhpLlm\LlmChain\Platform\OpenAI\Platform;
 
-final class Embeddings implements EmbeddingsModel
+final readonly class OpenAI implements EmbeddingsModel
 {
+    public const TEXT_ADA_002 = 'text-embedding-ada-002';
+    public const TEXT_3_LARGE = 'text-embedding-3-large';
+    public const TEXT_3_SMALL = 'text-embedding-3-small';
+
     public function __construct(
-        private readonly Platform $platform,
-        private ?Version $version = null,
+        private Platform $platform,
+        private string $version = self::TEXT_3_SMALL,
     ) {
-        $this->version ??= Version::textEmbedding3Small();
     }
 
     public function create(string $text, array $options = []): Vector
@@ -43,7 +45,7 @@ public function multiCreate(array $texts, array $options = []): array
     private function createBody(string $text): array
     {
         return [
-            'model' => $this->version->name,
+            'model' => $this->version,
             'input' => $text,
         ];
     }
diff --git a/src/Voyage/Model/Voyage.php b/src/Model/Embeddings/Voyage.php
similarity index 51%
rename from src/Voyage/Model/Voyage.php
rename to src/Model/Embeddings/Voyage.php
index 98f694fa..2cae5262 100644
--- a/src/Voyage/Model/Voyage.php
+++ b/src/Model/Embeddings/Voyage.php
@@ -2,20 +2,25 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Voyage\Model;
+namespace PhpLlm\LlmChain\Model\Embeddings;
 
 use PhpLlm\LlmChain\Document\Vector;
 use PhpLlm\LlmChain\EmbeddingsModel;
-use PhpLlm\LlmChain\Voyage\Model\Voyage\Version;
-use PhpLlm\LlmChain\Voyage\Platform;
+use PhpLlm\LlmChain\Platform\Voyage as Platform;
 
-final class Voyage implements EmbeddingsModel
+final readonly class Voyage implements EmbeddingsModel
 {
+    public const VERSION_V3 = 'voyage-3';
+    public const VERSION_V3_LITE = 'voyage-3-lite';
+    public const VERSION_FINANCE_2 = 'voyage-finance-2';
+    public const VERSION_MULTILINGUAL_2 = 'voyage-multilingual-2';
+    public const VERSION_LAW_2 = 'voyage-law-2';
+    public const VERSION_CODE_2 = 'voyage-code-2';
+
     public function __construct(
-        private readonly Platform $platform,
-        private ?Version $version = null,
+        private Platform $platform,
+        private string $version = self::VERSION_V3,
     ) {
-        $this->version ??= Version::v3();
     }
 
     public function create(string $text, array $options = []): Vector
@@ -28,7 +33,7 @@ public function create(string $text, array $options = []): Vector
     public function multiCreate(array $texts, array $options = []): array
     {
         $response = $this->platform->request(array_merge($options, [
-            'model' => $this->version->name,
+            'model' => $this->version,
             'input' => $texts,
         ]));
 
diff --git a/src/Anthropic/Model/Claude.php b/src/Model/Language/Claude.php
similarity index 75%
rename from src/Anthropic/Model/Claude.php
rename to src/Model/Language/Claude.php
index fda96696..baa0e733 100644
--- a/src/Anthropic/Model/Claude.php
+++ b/src/Model/Language/Claude.php
@@ -2,27 +2,30 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Anthropic\Model;
+namespace PhpLlm\LlmChain\Model\Language;
 
-use PhpLlm\LlmChain\Anthropic\Model\Claude\Version;
-use PhpLlm\LlmChain\Anthropic\Platform;
 use PhpLlm\LlmChain\LanguageModel;
 use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Platform\Anthropic;
 use PhpLlm\LlmChain\Response\ResponseInterface;
 use PhpLlm\LlmChain\Response\StreamResponse;
 use PhpLlm\LlmChain\Response\TextResponse;
 
-final class Claude implements LanguageModel
+final readonly class Claude implements LanguageModel
 {
+    public const VERSION_3_HAIKU = 'claude-3-haiku-20240307';
+    public const VERSION_3_SONNET = 'claude-3-sonnet-20240229';
+    public const VERSION_35_SONNET = 'claude-3-5-sonnet-20240620';
+    public const VERSION_3_OPUS = 'claude-3-opus-20240229';
+
     /**
      * @param array<string, mixed> $options The default options for the model usage
      */
     public function __construct(
-        private readonly Platform $platform,
-        private ?Version $version = null,
-        private readonly array $options = ['temperature' => 1.0, 'max_tokens' => 1000],
+        private Anthropic $platform,
+        private string $version = self::VERSION_35_SONNET,
+        private array $options = ['temperature' => 1.0, 'max_tokens' => 1000],
     ) {
-        $this->version ??= Version::sonnet35();
     }
 
     /**
@@ -33,7 +36,7 @@ public function call(MessageBag $messages, array $options = []): ResponseInterfa
     {
         $system = $messages->getSystemMessage();
         $body = array_merge($this->options, $options, [
-            'model' => $this->version->name,
+            'model' => $this->version,
             'system' => $system->content,
             'messages' => $messages->withoutSystemMessage(),
         ]);
diff --git a/src/OpenAI/Model/Gpt.php b/src/Model/Language/Gpt.php
similarity index 79%
rename from src/OpenAI/Model/Gpt.php
rename to src/Model/Language/Gpt.php
index 2389a386..425b318a 100644
--- a/src/OpenAI/Model/Gpt.php
+++ b/src/Model/Language/Gpt.php
@@ -2,13 +2,12 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\OpenAI\Model;
+namespace PhpLlm\LlmChain\Model\Language;
 
 use PhpLlm\LlmChain\Exception\RuntimeException;
 use PhpLlm\LlmChain\LanguageModel;
 use PhpLlm\LlmChain\Message\MessageBag;
-use PhpLlm\LlmChain\OpenAI\Model\Gpt\Version;
-use PhpLlm\LlmChain\OpenAI\Platform;
+use PhpLlm\LlmChain\Platform\OpenAI\Platform;
 use PhpLlm\LlmChain\Response\Choice;
 use PhpLlm\LlmChain\Response\ChoiceResponse;
 use PhpLlm\LlmChain\Response\ResponseInterface;
@@ -19,25 +18,42 @@
 
 final class Gpt implements LanguageModel
 {
+    public const GPT_35_TURBO = 'gpt-3.5-turbo';
+    public const GPT_35_TURBO_INSTRUCT = 'gpt-3.5-turbo-instruct';
+    public const GPT_4 = 'gpt-4';
+    public const GPT_4_TURBO = 'gpt-4-turbo';
+    public const GPT_4O = 'gpt-4o';
+    public const GPT_4O_MINI = 'gpt-4o-mini';
+    public const O1_MINI = 'o1-mini';
+    public const O1_PREVIEW = 'o1-preview';
+
     /**
      * @param array<mixed> $options The default options for the model usage
      */
     public function __construct(
         private readonly Platform $platform,
-        private ?Version $version = null,
+        private readonly string $version = self::GPT_4O,
         private readonly array $options = ['temperature' => 1.0],
+        private bool $supportsImageInput = false,
+        private bool $supportsStructuredOutput = false,
     ) {
-        $this->version ??= Version::gpt4o();
+        if (false === $this->supportsImageInput) {
+            $this->supportsImageInput = in_array($this->version, [self::GPT_4_TURBO, self::GPT_4O, self::GPT_4O_MINI, self::O1_MINI, self::O1_PREVIEW], true);
+        }
+
+        if (false === $this->supportsStructuredOutput) {
+            $this->supportsStructuredOutput = in_array($this->version, [self::GPT_4O, self::GPT_4O_MINI], true);
+        }
     }
 
     /**
-     * @param array<mixed> $options The options to be used for this specific call.
-     *                              Can overwrite default options.
+     * @param array<string, mixed> $options The options to be used for this specific call.
+     *                                      Can overwrite default options.
      */
     public function call(MessageBag $messages, array $options = []): ResponseInterface
     {
         $body = array_merge($this->options, $options, [
-            'model' => $this->version->name,
+            'model' => $this->version,
             'messages' => $messages,
         ]);
 
@@ -76,12 +92,12 @@ public function supportsToolCalling(): bool
 
     public function supportsImageInput(): bool
     {
-        return $this->version->supportImageInput;
+        return $this->supportsImageInput;
     }
 
     public function supportsStructuredOutput(): bool
     {
-        return $this->version->supportStructuredOutput;
+        return $this->supportsStructuredOutput;
     }
 
     private function streamIsToolCall(\Generator $response): bool
diff --git a/src/Model/Language/Llama.php b/src/Model/Language/Llama.php
new file mode 100644
index 00000000..9d87660d
--- /dev/null
+++ b/src/Model/Language/Llama.php
@@ -0,0 +1,137 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpLlm\LlmChain\Model\Language;
+
+use PhpLlm\LlmChain\Exception\RuntimeException;
+use PhpLlm\LlmChain\LanguageModel;
+use PhpLlm\LlmChain\Message\AssistantMessage;
+use PhpLlm\LlmChain\Message\Content\Image;
+use PhpLlm\LlmChain\Message\Content\Text;
+use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Message\SystemMessage;
+use PhpLlm\LlmChain\Message\UserMessage;
+use PhpLlm\LlmChain\Platform\Ollama;
+use PhpLlm\LlmChain\Platform\Replicate;
+use PhpLlm\LlmChain\Response\TextResponse;
+
+final readonly class Llama implements LanguageModel
+{
+    public function __construct(
+        private Replicate|Ollama $platform,
+    ) {
+    }
+
+    public function call(MessageBag $messages, array $options = []): TextResponse
+    {
+        if ($this->platform instanceof Replicate) {
+            $response = $this->platform->request('meta/meta-llama-3.1-405b-instruct', 'predictions', [
+                'system' => self::convertMessage($messages->getSystemMessage() ?? new SystemMessage('')),
+                'prompt' => self::convertToPrompt($messages->withoutSystemMessage()),
+            ]);
+
+            return new TextResponse(implode('', $response['output']));
+        }
+
+        $response = $this->platform->request('llama3.2', 'chat', ['messages' => $messages, 'stream' => false]);
+
+        return new TextResponse($response['message']['content']);
+    }
+
+    /**
+     * @todo make method private, just for testing, or create a MessageBag to LLama convert class :thinking:
+     */
+    public static function convertToPrompt(MessageBag $messageBag): string
+    {
+        $messages = [];
+
+        /** @var UserMessage|SystemMessage|AssistantMessage $message */
+        foreach ($messageBag->getIterator() as $message) {
+            $messages[] = self::convertMessage($message);
+        }
+
+        $messages = array_filter($messages, fn ($message) => '' !== $message);
+
+        return trim(implode(PHP_EOL.PHP_EOL, $messages)).PHP_EOL.PHP_EOL.'<|start_header_id|>assistant<|end_header_id|>';
+    }
+
+    /**
+     * @todo make method private, just for testing
+     */
+    public static function convertMessage(UserMessage|SystemMessage|AssistantMessage $message): string
+    {
+        if ($message instanceof SystemMessage) {
+            return trim(<<<SYSTEM
+<|begin_of_text|><|start_header_id|>system<|end_header_id|>
+
+{$message->content}<|eot_id|>
+SYSTEM);
+        }
+
+        if ($message instanceof AssistantMessage) {
+            if ('' === $message->content || null === $message->content) {
+                return '';
+            }
+
+            return trim(<<<ASSISTANT
+<|start_header_id|>{$message->getRole()->value}<|end_header_id|>
+
+{$message->content}<|eot_id|>
+ASSISTANT);
+        }
+
+        if ($message instanceof UserMessage) {
+            $count = count($message->content);
+
+            $contentParts = [];
+            if ($count > 1) {
+                foreach ($message->content as $value) {
+                    if ($value instanceof Text) {
+                        $contentParts[] = $value->text;
+                    }
+
+                    if ($value instanceof Image) {
+                        $contentParts[] = $value->url;
+                    }
+                }
+            } elseif (1 === $count) {
+                $value = $message->content[0];
+                if ($value instanceof Text) {
+                    $contentParts[] = $value->text;
+                }
+
+                if ($value instanceof Image) {
+                    $contentParts[] = $value->url;
+                }
+            } else {
+                throw new RuntimeException('Unsupported message type.');
+            }
+
+            $content = implode(PHP_EOL, $contentParts);
+
+            return trim(<<<USER
+<|start_header_id|>{$message->getRole()->value}<|end_header_id|>
+
+{$content}<|eot_id|>
+USER);
+        }
+
+        throw new RuntimeException('Unsupported message type.'); // @phpstan-ignore-line
+    }
+
+    public function supportsToolCalling(): bool
+    {
+        return false; // it does, but implementation here is still open.
+    }
+
+    public function supportsImageInput(): bool
+    {
+        return false; // it does, but implementation here is still open.
+    }
+
+    public function supportsStructuredOutput(): bool
+    {
+        return false;
+    }
+}
diff --git a/src/OpenAI/Model/Embeddings/Version.php b/src/OpenAI/Model/Embeddings/Version.php
deleted file mode 100644
index f56c0ff8..00000000
--- a/src/OpenAI/Model/Embeddings/Version.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace PhpLlm\LlmChain\OpenAI\Model\Embeddings;
-
-use Webmozart\Assert\Assert;
-
-final readonly class Version
-{
-    /**
-     * @param non-empty-string $name
-     */
-    public function __construct(
-        public string $name,
-    ) {
-        Assert::stringNotEmpty($name);
-    }
-
-    public static function textEmbeddingAda002(): self
-    {
-        return new self('text-embedding-ada-002');
-    }
-
-    public static function textEmbedding3Large(): self
-    {
-        return new self('text-embedding-3-large');
-    }
-
-    public static function textEmbedding3Small(): self
-    {
-        return new self('text-embedding-3-small');
-    }
-}
diff --git a/src/OpenAI/Model/Gpt/Version.php b/src/OpenAI/Model/Gpt/Version.php
deleted file mode 100644
index e7857876..00000000
--- a/src/OpenAI/Model/Gpt/Version.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace PhpLlm\LlmChain\OpenAI\Model\Gpt;
-
-use Webmozart\Assert\Assert;
-
-final readonly class Version
-{
-    /**
-     * @param non-empty-string $name
-     */
-    public function __construct(
-        public string $name,
-        public bool $supportImageInput = false,
-        public bool $supportStructuredOutput = false,
-    ) {
-        Assert::stringNotEmpty($name);
-    }
-
-    public static function gpt35Turbo(): self
-    {
-        return new self('gpt-3.5-turbo');
-    }
-
-    public static function gpt35TurboInstruct(): self
-    {
-        return new self('gpt-3.5-turbo-instruct');
-    }
-
-    public static function gpt4(): self
-    {
-        return new self('gpt-4');
-    }
-
-    public static function gpt4Turbo(): self
-    {
-        return new self('gpt-4-turbo', true);
-    }
-
-    public static function gpt4o(): self
-    {
-        return new self('gpt-4o', true, true);
-    }
-
-    public static function gpt4oMini(): self
-    {
-        return new self('gpt-4o-mini', true, true);
-    }
-
-    public static function o1Mini(): self
-    {
-        return new self('o1-mini', true, false);
-    }
-
-    public static function o1Preview(): self
-    {
-        return new self('o1-preview', true, false);
-    }
-}
diff --git a/src/Anthropic/Platform/Anthropic.php b/src/Platform/Anthropic.php
similarity index 91%
rename from src/Anthropic/Platform/Anthropic.php
rename to src/Platform/Anthropic.php
index ddfdb84d..b639903b 100644
--- a/src/Anthropic/Platform/Anthropic.php
+++ b/src/Platform/Anthropic.php
@@ -2,15 +2,14 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Anthropic\Platform;
+namespace PhpLlm\LlmChain\Platform;
 
-use PhpLlm\LlmChain\Anthropic\Platform;
 use Symfony\Component\HttpClient\Chunk\ServerSentEvent;
 use Symfony\Component\HttpClient\EventSourceHttpClient;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 use Symfony\Contracts\HttpClient\ResponseInterface;
 
-final readonly class Anthropic implements Platform
+final readonly class Anthropic
 {
     private EventSourceHttpClient $httpClient;
 
diff --git a/src/Platform/Ollama.php b/src/Platform/Ollama.php
new file mode 100644
index 00000000..d642b422
--- /dev/null
+++ b/src/Platform/Ollama.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpLlm\LlmChain\Platform;
+
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+
+final readonly class Ollama
+{
+    public function __construct(
+        private HttpClientInterface $httpClient,
+        private string $hostUrl,
+    ) {
+    }
+
+    /**
+     * @param string               $model The model name on Replicate, e.g. "meta/meta-llama-3.1-405b-instruct"
+     * @param array<string, mixed> $body
+     *
+     * @return array<string, mixed>
+     */
+    public function request(string $model, string $endpoint, array $body): array
+    {
+        $url = sprintf('%s/api/%s', $this->hostUrl, $endpoint);
+
+        $response = $this->httpClient->request('POST', $url, [
+            'headers' => ['Content-Type' => 'application/json'],
+            'json' => array_merge($body, [
+                'model' => $model,
+            ]),
+        ]);
+
+        return $response->toArray();
+    }
+}
diff --git a/src/OpenAI/Platform/AbstractPlatform.php b/src/Platform/OpenAI/AbstractPlatform.php
similarity index 95%
rename from src/OpenAI/Platform/AbstractPlatform.php
rename to src/Platform/OpenAI/AbstractPlatform.php
index 7949442c..496ee8b9 100644
--- a/src/OpenAI/Platform/AbstractPlatform.php
+++ b/src/Platform/OpenAI/AbstractPlatform.php
@@ -2,10 +2,9 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\OpenAI\Platform;
+namespace PhpLlm\LlmChain\Platform\OpenAI;
 
 use PhpLlm\LlmChain\Exception\RuntimeException;
-use PhpLlm\LlmChain\OpenAI\Platform;
 use Symfony\Component\HttpClient\Chunk\ServerSentEvent;
 use Symfony\Component\HttpClient\EventSourceHttpClient;
 use Symfony\Component\HttpClient\Exception\ClientException;
diff --git a/src/OpenAI/Platform/Azure.php b/src/Platform/OpenAI/Azure.php
similarity index 95%
rename from src/OpenAI/Platform/Azure.php
rename to src/Platform/OpenAI/Azure.php
index 5d6e247e..b00409e8 100644
--- a/src/OpenAI/Platform/Azure.php
+++ b/src/Platform/OpenAI/Azure.php
@@ -2,9 +2,8 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\OpenAI\Platform;
+namespace PhpLlm\LlmChain\Platform\OpenAI;
 
-use PhpLlm\LlmChain\OpenAI\Platform;
 use Symfony\Component\HttpClient\EventSourceHttpClient;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 use Symfony\Contracts\HttpClient\ResponseInterface;
diff --git a/src/OpenAI/Platform/OpenAI.php b/src/Platform/OpenAI/OpenAI.php
similarity index 93%
rename from src/OpenAI/Platform/OpenAI.php
rename to src/Platform/OpenAI/OpenAI.php
index 74833bac..790fad75 100644
--- a/src/OpenAI/Platform/OpenAI.php
+++ b/src/Platform/OpenAI/OpenAI.php
@@ -2,9 +2,8 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\OpenAI\Platform;
+namespace PhpLlm\LlmChain\Platform\OpenAI;
 
-use PhpLlm\LlmChain\OpenAI\Platform;
 use Symfony\Component\HttpClient\EventSourceHttpClient;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 use Symfony\Contracts\HttpClient\ResponseInterface;
diff --git a/src/OpenAI/Platform.php b/src/Platform/OpenAI/Platform.php
similarity index 90%
rename from src/OpenAI/Platform.php
rename to src/Platform/OpenAI/Platform.php
index 28759bc4..dd12e656 100644
--- a/src/OpenAI/Platform.php
+++ b/src/Platform/OpenAI/Platform.php
@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\OpenAI;
+namespace PhpLlm\LlmChain\Platform\OpenAI;
 
 interface Platform
 {
diff --git a/src/Platform/Replicate.php b/src/Platform/Replicate.php
new file mode 100644
index 00000000..37968fca
--- /dev/null
+++ b/src/Platform/Replicate.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpLlm\LlmChain\Platform;
+
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+
+final readonly class Replicate
+{
+    public function __construct(
+        private HttpClientInterface $httpClient,
+        #[\SensitiveParameter] private string $apiKey,
+    ) {
+    }
+
+    /**
+     * @param string               $model The model name on Replicate, e.g. "meta/meta-llama-3.1-405b-instruct"
+     * @param array<string, mixed> $body
+     *
+     * @return array<string, mixed>
+     */
+    public function request(string $model, string $endpoint, array $body): array
+    {
+        $url = sprintf('https://api.replicate.com/v1/models/%s/%s', $model, $endpoint);
+
+        $response = $this->httpClient->request('POST', $url, [
+            'headers' => ['Content-Type' => 'application/json'],
+            'auth_bearer' => $this->apiKey,
+            'json' => ['input' => $body],
+        ])->toArray();
+
+        while (!in_array($response['status'], ['succeeded', 'failed', 'canceled'], true)) {
+            sleep(1);
+
+            $response = $this->getResponse($response['id']);
+        }
+
+        return $response;
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    private function getResponse(string $id): array
+    {
+        $url = sprintf('https://api.replicate.com/v1/predictions/%s', $id);
+
+        $response = $this->httpClient->request('GET', $url, [
+            'headers' => ['Content-Type' => 'application/json'],
+            'auth_bearer' => $this->apiKey,
+        ]);
+
+        return $response->toArray();
+    }
+}
diff --git a/src/Voyage/Platform/Voyage.php b/src/Platform/Voyage.php
similarity index 76%
rename from src/Voyage/Platform/Voyage.php
rename to src/Platform/Voyage.php
index 330e73e3..0671596e 100644
--- a/src/Voyage/Platform/Voyage.php
+++ b/src/Platform/Voyage.php
@@ -2,12 +2,11 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Voyage\Platform;
+namespace PhpLlm\LlmChain\Platform;
 
-use PhpLlm\LlmChain\Voyage\Platform;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 
-final readonly class Voyage implements Platform
+final readonly class Voyage
 {
     public function __construct(
         private HttpClientInterface $httpClient,
@@ -15,6 +14,11 @@ public function __construct(
     ) {
     }
 
+    /**
+     * @param array<string, mixed> $body
+     *
+     * @return array<string, mixed>
+     */
     public function request(array $body): array
     {
         $response = $this->httpClient->request('POST', 'https://api.voyageai.com/v1/embeddings', [
diff --git a/src/Voyage/Model/Voyage/Version.php b/src/Voyage/Model/Voyage/Version.php
deleted file mode 100644
index 77ffd2f3..00000000
--- a/src/Voyage/Model/Voyage/Version.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace PhpLlm\LlmChain\Voyage\Model\Voyage;
-
-use Webmozart\Assert\Assert;
-
-final readonly class Version
-{
-    public function __construct(
-        public string $name,
-    ) {
-        Assert::stringNotEmpty($name);
-    }
-
-    public static function v3(): self
-    {
-        return new self('voyage-3');
-    }
-
-    public static function v3lite(): self
-    {
-        return new self('voyage-3-lite');
-    }
-
-    public static function finance2(): self
-    {
-        return new self('voyage-finance-2');
-    }
-
-    public static function multilingual2(): self
-    {
-        return new self('voyage-multilingual-2');
-    }
-
-    public static function law2(): self
-    {
-        return new self('voyage-law-2');
-    }
-
-    public static function code2(): self
-    {
-        return new self('voyage-code-2');
-    }
-}
diff --git a/src/Voyage/Platform.php b/src/Voyage/Platform.php
deleted file mode 100644
index 696dc5ba..00000000
--- a/src/Voyage/Platform.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace PhpLlm\LlmChain\Voyage;
-
-interface Platform
-{
-    /**
-     * @param array<string, mixed> $body
-     *
-     * @return array<string, mixed>
-     */
-    public function request(array $body): array;
-}
diff --git a/tests/Model/Language/LlamaTest.php b/tests/Model/Language/LlamaTest.php
new file mode 100644
index 00000000..94ff87fa
--- /dev/null
+++ b/tests/Model/Language/LlamaTest.php
@@ -0,0 +1,133 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpLlm\LlmChain\Tests\Model\Language;
+
+use PhpLlm\LlmChain\Message\AssistantMessage;
+use PhpLlm\LlmChain\Message\Content\Image;
+use PhpLlm\LlmChain\Message\Message;
+use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Message\SystemMessage;
+use PhpLlm\LlmChain\Message\UserMessage;
+use PhpLlm\LlmChain\Model\Language\Llama;
+use PhpLlm\LlmChain\Platform\Ollama;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Small;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpClient\MockHttpClient;
+
+#[CoversClass(Llama::class)]
+#[Small]
+final class LlamaTest extends TestCase
+{
+    #[Test]
+    public function convertMessages(): void
+    {
+        $messageBag = new MessageBag(
+        );
+        foreach (self::provideMessages() as $message) {
+            $messageBag->append($message[1]);
+        }
+
+        self::assertSame(<<<EXPECTED
+<|begin_of_text|><|start_header_id|>system<|end_header_id|>
+
+You are a helpful chatbot.<|eot_id|>
+
+<|start_header_id|>user<|end_header_id|>
+
+Hello, how are you?<|eot_id|>
+
+<|start_header_id|>user<|end_header_id|>
+
+Hello, how are you?
+What is your name?<|eot_id|>
+
+<|start_header_id|>user<|end_header_id|>
+
+Hello, how are you?
+What is your name?
+https://example.com/image.jpg<|eot_id|>
+
+<|start_header_id|>assistant<|end_header_id|>
+
+I am an assistant.<|eot_id|>
+
+<|start_header_id|>assistant<|end_header_id|>
+EXPECTED,
+            (new Llama(new Ollama(new MockHttpClient(), 'http://example.com')))->convertToPrompt($messageBag)
+        );
+    }
+
+    #[Test]
+    #[DataProvider('provideMessages')]
+    public function convertMessage(string $expected, UserMessage|SystemMessage|AssistantMessage $message): void
+    {
+        self::assertSame(
+            $expected,
+            (new Llama(new Ollama(new MockHttpClient(), 'http://example.com')))->convertMessage($message)
+        );
+    }
+
+    /**
+     * @return iterable<array{string, UserMessage|SystemMessage|AssistantMessage}>
+     */
+    public static function provideMessages(): iterable
+    {
+        yield 'System message' => [
+            <<<SYSTEM
+<|begin_of_text|><|start_header_id|>system<|end_header_id|>
+
+You are a helpful chatbot.<|eot_id|>
+SYSTEM,
+            Message::forSystem('You are a helpful chatbot.'),
+        ];
+
+        yield 'UserMessage' => [
+            <<<USER
+<|start_header_id|>user<|end_header_id|>
+
+Hello, how are you?<|eot_id|>
+USER,
+            Message::ofUser('Hello, how are you?'),
+        ];
+
+        yield 'UserMessage with two texts' => [
+            <<<USER
+<|start_header_id|>user<|end_header_id|>
+
+Hello, how are you?
+What is your name?<|eot_id|>
+USER,
+            Message::ofUser('Hello, how are you?', 'What is your name?'),
+        ];
+
+        yield 'UserMessage with two texts and one image' => [
+            <<<USER
+<|start_header_id|>user<|end_header_id|>
+
+Hello, how are you?
+What is your name?
+https://example.com/image.jpg<|eot_id|>
+USER,
+            Message::ofUser('Hello, how are you?', 'What is your name?', new Image('https://example.com/image.jpg')),
+        ];
+
+        yield 'AssistantMessage' => [
+            <<<ASSISTANT
+<|start_header_id|>assistant<|end_header_id|>
+
+I am an assistant.<|eot_id|>
+ASSISTANT,
+            new AssistantMessage('I am an assistant.'),
+        ];
+
+        yield 'AssistantMessage with null content' => [
+            '',
+            new AssistantMessage(),
+        ];
+    }
+}