@langchain/weaviate==0.2.1

What's Changed

• Adding Hybrid search and RAG features by @dee-at-weaviate in #8410

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/weaviate==0.2.0...@langchain/weaviate==0.2.1

@langchain/tavily==0.1.4

What's Changed

• feat(langchain-tavily): adding the TavilyCrawl and TavilyMap tools for the Tavily partner package by @konstantintzt in #8447

New Contributors

• @konstantintzt made their first contribution in #8447

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/tavily==0.1.3...@langchain/tavily==0.1.4

@langchain/mcp-adapters==0.5.3

What's Changed

• fix(mcp-adapters): use DynamicStructuredTool instead of interface type by @hntrl in #8424

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/mcp-adapters==0.5.2...@langchain/mcp-adapters==0.5.3

@langchain/core==0.3.62

What's Changed

• fix(core): max event listeners error long running process by @andrewdoro in #8366

New Contributors

• @andrewdoro made their first contribution in #8366

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/core==0.3.61...@langchain/core==0.3.62

@langchain/community==0.3.48

What's Changed

• fix: add missing APAC region prefix in Bedrock models by @christian-bromann in #8425
• fix[community]: watsonx.ai software auth for all IBM classes by @FilipZmijewski in #8331
• chore: Add tool annotations to metadata by @jonathanfds in #8415

New Contributors

• @jonathanfds made their first contribution in #8415

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/community==0.3.47...@langchain/community==0.3.48

@langchain/google==0.2.14

What's Changed

• release(google-*): 0.2.13 by @hntrl in #8391
• fix(gemini): A thinking budget of -1 is valid. by @afirstenberg in #8423

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/google-common==0.2.13...@langchain/google-common==0.2.14

@langchain/openai==0.5.16

What's Changed

• release: openai zod patches by @hntrl in #8406
• patch[openai]: add service tier opts by @hntrl in #8421

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/openai==0.5.15...@langchain/openai==0.5.16

@langchain/openai==0.5.15

What's Changed

• patch[openai]: revert zod tool formatting for optional fields by @hntrl in #8402

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/openai==0.5.14...@langchain/openai==0.5.15

@langchain/core==0.3.61

What's Changed

• patch[core]: allow for inner transforms in schema serialization by @hntrl in #8404

Full Changelog: https://github.com/langchain-ai/langchainjs/compare/@langchain/core==0.3.60...@langchain/core==0.3.61

Release 0.3.29

Highlights

💎 Zod 4 support in LangChain is now GA!

// Use in structured outputs
import { z } from "zod/v4";

const model = new ChatOpenAI(...).withStructuredOutput(
  z.object({
    foo: z.string(),
    bar: z.number(),
  }),
);

// Use in tools
import { tool } from "@langchain/core/tools";
import { z } from "zod/v4";

const multiply = tool(
  ({ a, b }) => a * b
  {
    name: "multiply",
    description: "Multiply two numbers",
    schema: z.object({
      a: z.number(),
      b: z.number(),
    }),
  }
);

🕵 ChatAnthropic now supports using the built-in web search tool!

import { ChatAnthropic } from "@langchain/anthropic";

const model = new ChatAnthropic({
  model: "claude-3-5-sonnet-20241022",
  temperature: 0,
}).bindTools([
  {
    type: "web_search_20250305",
    name: "web_search",
    max_uses: 1,
  },
]);

const result = await model.invoke([
  new HumanMessage("What is Claude Shannon's birth date?"),
]);

🛠️ ChatOpenAI now supports the code interpreter, image gen, and remote MCP tools!

See the docs

What's Changed

• release: zod 4 integrations releases by @hntrl in #8346
• ChatVertexAI: add prompt caching usage metadata by @keremnalbant in #8320
• fix(gemini): nullable properties in withStructuredOutput by @afirstenberg in #8326
• feat(google): Support TTS models by @afirstenberg in #8343
• release(google-*): 0.2.12 by @hntrl in #8359
• fix(google-*): bump downstream core dep for google packages by @hntrl in #8360
• Add Support for Anthropic's Built-in Tools by @bleafman in #8248
• Fix param in langchain-google-genai README by @MilanCancarevic in #8321
• patch(openai): upgrade sdk & defer zdr handling to openai by @hntrl in #8355
• feat: use run tree post/patch by @lc-arjun in #8350
• implement ollama streaming with tools by @karanravindra in #8307
• feat: add ls_structured_output_format tracing by @hntrl in #8368
• Add notIn filter support for pgvector by @yilinjuang in #8354
• chore(community): use distance_metric in turbopuffer call by @hntrl in #8371
• feat(google-genai): Add baseUrl property to embeddings by @schrothbn in #8235
• Fixed some typographical structuring issue in the RAG tutorial by @OVECJOE in #8337
• fix(core): implement proper token counting for mixed content in getNumTokens by @christian-bromann in #8341
• fix(openai): handle zdr cases with reasoning by @hntrl in #8374
• fix(core): Await default client batches when awaiting all callbacks, set default traced project from LangSmith by @jacoblee93 in #8373
• release(core): 0.3.59 by @jacoblee93 in #8376
• chore: update dependency: mongodb by @YasharF in #8280
• chore: upgrade to TypeScript 5.8 by @dqbd in #8315
• fix(docs): fix broken links across documentation by @christian-bromann in #8372
• feat: enhance VS Code workspace configuration by @christian-bromann in #8375
• fix(docs): missed formatting bug by @hntrl in #8381
• Update langchain-openai package.json to unpin specifc zod version by @tobymac-siro in #8380
• fix(tests): correct typos and formatting in standard tests README.md by @mdrxy in #8382
• fix(core): use input param for schema serialization by @hntrl in #8370
• minor(google): Upgrade Upgrade google-auth-library to latest major version (v10) by @afirstenberg in #8383
• minor(google-gauth): Upgrade google-auth-library to latest major version (v10) by @lbennett-stacki in #8365
• fix(google): Gemini 2 5 by @afirstenberg in #8384
• openai[minor]: upgrade sdk and support new built-in tools by @hntrl in #8324
• feat(google): Gemini thinking updates by @afirstenberg in #8363
• chore: upgrade turbo (Turborepo) by @YasharF in #8281
• release(google-*): 0.2.13 by @hntrl in #8391
• fix(ci): bump lockfile by @hntrl in #8392
• feat: add typed model IDs for chat and embedding models across providers by @christian-bromann in #8323
• fix(core): add custom key encoder and deprecate insecureHash by @manekinekko in #8379
• re-introduce openai's zodFunction function helper as it will ensure t… by @infiton in #8389
• fix(hf): Upgrade @huggingface dependencies by @YasharF in #8237
• refactor: update Ollama import and add fetch option to models by @Sergeant61 in #8396
• Fix(community): perplexity reasoning json parser error by @marvikomo in #8395

New Contributors

• @lnhsingh made their first contribution in #8352
• @bleafman made their first contribution in #8248
• @MilanCancarevic made their first contribution in #8321
• @lc-arjun made their first contribution in #8350
• @karanravindra made their first contribution in #8307
• @yilinjuang made their first contribution in #8354
• @schrothbn made their first contribution in #8235
• @OVECJOE made their first contribution in #8337
• @christian-bromann made their first contribution in #8341
• @YasharF made their first contribution in #8280
• @tobymac-siro made their first contribution in #8380
• @mdrxy made their first contribution in #8382
• @lbennett-stacki made their first contribution in #8365
• @manekinekko made their first contribution in #8379
• @infiton made their first contribution in #8389
• @Sergeant61 made their first contribution in #8396
• @marvikomo made their first contribution in #8395

Full Changelog: langchain==0.3.28...langchain==0.3.29