LangChain releases
134 articles archived · Visit source ↗ · RSS
-
LangChain releases dev-tools 2d ago
langchain-fireworks==1.6.3
Changes since langchain-fireworks==1.6.2 release(fireworks): 1.6.3 ( #40834 ) fix(fireworks): declare native PDF inputs unsupported ( #40814 ) fix(fireworks): preserve malformed tool arguments as diagnostic JSON ( #40818 ) chore(model-profiles): refresh model profile data (…
27 -
langchain-anthropic==1.7.4
Changes since langchain-anthropic==1.7.3 chore(anthropic): fix integration test cassette ( #40790 ) release(anthropic): 1.7.4 ( #40786 ) fix(anthropic): add Opus 5.5 and GPT-6 profile augmentations ( #40785 ) feat(anthropic,openai): mid-conversation tool changes on SystemMessage…
17 -
langchain-anthropic==1.7.3
Changes since langchain-anthropic==1.7.2 release(anthropic): 1.7.3 ( #40773 ) chore(model-profiles): refresh anthropic model profile data ( #40772 ) fix(anthropic): auto-route with_structured_output to method="json_schema" for fable and opus 5.5 ( #40766 ) chore(anthropic):…
38 -
langchain-fireworks==1.6.2
Changes since langchain-fireworks==1.6.1 fix(fireworks): use current completions model in LLM tests ( #40740 ) hotfix(fireworks): use available model in LLM tests ( #40737 ) release(fireworks): 1.6.2 ( #40735 ) chore(model-profiles): refresh model profile data ( #40665 )…
24 -
langchain-deepseek==1.1.1
Changes since langchain-deepseek==1.1.0 fix(deepseek,infra): resolve compatible minimum OpenAI dependencies, bump min ver ( #40738 ) release(deepseek): 1.1.1 ( #40734 ) chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/partners/deepseek ( #40641 ) chore(model-profiles):…
5 -
langchain-openrouter==0.2.9
Changes since langchain-openrouter==0.2.8 release(openrouter): 0.2.9 ( #40736 ) chore(model-profiles): refresh model profile data ( #40705 ) chore(model-profiles): refresh model profile data ( #40685 ) chore(model-profiles): refresh model profile data ( #40665 ) chore(deps):…
23 -
langchain-openai==1.6.3
Changes since langchain-openai==1.6.2 release(openai): 1.6.3 ( #40719 ) fix(openai): expose inferred Responses API routing at initialization ( #40715 ) chore(deps): bump anyio from 4.11.0 to 4.14.2 in /libs/partners/openai ( #40629 ) fix(openai): support GPT-6 request…
11 -
langchain-core==1.6.4
Changes since langchain-core==1.6.3 release(core): 1.6.4 ( #40718 ) chore(core): deprecate chat message history ( #40711 ) chore(deps): bump anyio from 4.12.0 to 4.14.2 in /libs/core ( #40634 ) chore(deps): bump soupsieve from 2.8.4 to 2.9 in /libs/core ( #40574 )
18 -
langchain-typesafe==0.0.1a3
Initial release release(typesafe): 0.0.1a3 ( #40693 ) feat(typesafe): make classifier questions invocation-scoped ( #40659 ) release(typesafe): bump to 0.0.1a2 ( #40576 ) feat(typesafe): experimental AutoModeMiddleware ( #40545 ) feat(typesafe): experimental…
35 -
langchain-typesafe==0.0.1a2
Initial release release(typesafe): bump to 0.0.1a2 ( #40576 ) feat(typesafe): experimental AutoModeMiddleware ( #40545 ) feat(typesafe): experimental ModelRouterMiddleware ( #40543 ) fix(typesafe): trace usage metadata ( #40570 ) feat(typesafe): TypeSafeClassifier ( #40542 )
31 -
langchain-typesafe==0.0.1a1
Initial release feat(typesafe): TypeSafeClassifier ( #40542 )
22 -
langchain-core==1.6.3
Changes since langchain-core==1.6.2 release(core): 1.6.3 ( #40407 ) feat(core): Allow model name and provider tracing metadata override based on gateway response ( #40406 ) test(core): cover the deprecated .text() access path ( #40243 ) docs(core): remove stale Args/Raises…
38 -
-
langchain-openai==1.6.1
Changes since langchain-openai==1.6.0 fix(openai): bump max_completion_tokens in cache breakpoint integration test ( #40284 ) release(openai): 1.6.1 ( #40268 ) chore(model-profiles): refresh model profile data ( #40217 ) fix(openai): support Azure AD auth with OpenAI 3.8 (…
33 -
langchain-core==1.6.2
Changes since langchain-core==1.6.1 release(core): 1.6.2 ( #40209 ) feat(openai): support async tools ( #40208 ) chore(deps): bump mistune from 3.3.0 to 3.3.3 in /libs/core ( #40150 ) chore(deps): bump tornado from 6.5.7 to 6.5.8 in /libs/core ( #40113 ) fix(core): avoid…
15 -
langchain==1.4.0
Changes since langchain==1.3.18 docs(langchain): runnable langchain.mcp examples ( #39976 ) feat(langchain): langchain.mcp namespace, MCPAdapter ( #39939 ) perf(anthropic,langchain): omit middleware trace inputs ( #40098 ) fix(langchain): include model destination in agent tool…
28 -
langchain==1.4.0a4
Initial release release(langchain): 1.4.0a4 test(langchain): cover mixed-era ClientGroup and group elicitation Update libs/langchain_v1/langchain/mcp/adapter.py fix(langchain): drive MCP elicitation via member session for fastmcp 4.0.1 fix(sdk): use latest fastmcp and rm…
33 -
langchain==1.4.0a3
Third alpha of the 1.4.0 line. This release focuses on the new langchain.mcp namespace for adapting MCP servers into LangChain tools. langchain.mcp highlights MCPAdapter adapts any target fastmcp.Client accepts — a URL, a local script, an in-process server, an MCPConfig naming…
36 -
langchain==1.4.0a2
Alpha preview of langchain.mcp — a first-party adapter that turns any MCP server into LangChain tools you can hand straight to create_agent . Connection handling is FastMCP 's, so its client features are available as-is rather than re-implemented behind a narrower interface. pip…
32 -
langchain==1.4.0a1
Initial release fix(langchain): name the content type MCP conversion could not handle release(langchain): 1.4.0a1 test(langchain): skip MCP tests on a pydantic older than mcp supports test(langchain): drive MCP tests through FastMCP's own utilities fix(langchain/mcp): review…
25 -
langchain-core==1.6.1
Changes since langchain-core==1.6.0 revert: release(core): 1.6.2 ( #39971 ) release(core): 1.6.2 ( #39967 ) fix(core): shore up indexing in genai v1 streaming content ( #39964 ) fix(core): make StructuredTool JSON-serializable ( #39631 ) chore(deps): bump minor and patch…
21 -
-
langchain-anthropic==1.7.0
Changes since langchain-anthropic==1.6.1 release(anthropic): 1.7.0 ( #39963 ) feat(anthropic): support top-level param for skills via container ; updates thinking display mode ( #39962 ) feat(anthropic): support 1.0 sdk ( #39938 ) fix(anthropic): auto-append…
28 -
langchain-perplexity==1.4.1
Changes since langchain-perplexity==1.4.0 release(perplexity): 1.4.1 ( #39826 ) fix(perplexity): include type="message" on Responses input items ( #39774 ) fix(perplexity): preserve caller extra_body ( #39203 ) chore: bump pillow from 12.2.0 to 12.3.0 in…
21 -
langchain-fireworks==1.6.0
Changes since langchain-fireworks==1.5.2 release(fireworks): 1.6.0 ( #39810 ) feat(fireworks): add document reranking ( #39732 ) fix(fireworks): filter invalid tool calls from v1 content ( #39805 ) feat(core): add standard model exception types ( #39538 ) chore(model-profiles):…
4 -
langchain==1.3.16
Changes since langchain==1.3.15 release(langchain): 1.3.16 ( #39806 ) feat(core): add standard model exception types ( #39538 ) feat(langchain): support custom token_counter in ContextEditingMiddleware ( #39754 ) fix(langchain): re-raise non-retryable exceptions in…
37 -
-
langchain-anthropic==1.6.0
Changes since langchain-anthropic==1.5.6 release(anthropic): 1.6.0 ( #39763 ) feat(core): add standard model exception types ( #39538 ) fix(anthropic): exclude sibling directories from grep search scope ( #39681 ) chore(infra): support langsmith gateway in CI ( #39651 )
24 -
langchain-core==1.6.0
Changes since langchain-core==1.5.6 release(core): 1.6.0 ( #39760 ) fix(core): resolve postponed annotations in StructuredTool._injected_args_keys ( #39602 ) feat(core): add standard model exception types ( #39538 ) fix(core): allow deserializing RunnablePick ( #39753 )…
24 -
langchain-openai==1.5.2
Changes since langchain-openai==1.5.1 release(openai): 1.5.2 ( #39719 ) fix(openai): preserve reasoning item boundaries ( #39278 ) release(openai): 1.5.2a1 ( #39709 ) feat(openai): extract gateway metadata from response headers when available ( #39706 ) chore(openai): update…
9 -
langchain-openai==1.5.2a1
Initial release release(openai): 1.5.2a1 ( #39709 ) feat(openai): extract gateway metadata from response headers when available ( #39706 ) chore(openai): update snapshots ( #39657 ) fix(openai): support o-series models in get_num_tokens_from_messages ( #38710 ) release(openai):…
6 -
langchain-core==1.5.6
Changes since langchain-core==1.5.5 chore(core): release 1.5.6 ( #39704 ) feat(core): incorporate gateway metadata to traces ( #39703 )
28 -
langchain-openrouter==0.2.8
Changes since langchain-openrouter==0.2.7 release(openrouter): 0.2.8 ( #39658 ) chore(model-profiles): refresh model profile data ( #39646 ) chore(model-profiles): refresh model profile data ( #39625 ) fix(openrouter): preserve cost metadata in usage chunks ( #39338 )…
22 -
langchain-core==1.5.5
Changes since langchain-core==1.5.4 release(core): 1.5.5 ( #39655 ) fix(core): make abatch_iterate consistent with batch_iterate for None and zero size ( #39367 ) fix(core): respect pydantic aliases when validating tool inputs ( #39572 ) fix(core): issues in merging chunks (…
34 -
-
langchain-anthropic==1.5.5
Changes since langchain-anthropic==1.5.4 release(anthropic): 1.5.5 ( #39597 ) fix(anthropic): report reasoning tokens in usage metadata ( #39590 ) fix(anthropic): fix KeyError on rename in Claude file-tool middleware ( #39293 ) chore(model-profiles): refresh model profile data (…
8 -
langchain==1.3.15
Changes since langchain==1.3.14 release(langchain): 1.3.15 ( #39595 ) feat(langchain): expose trace_policy on AgentMiddleware ( #38910 ) chore(langchain): fix type errors in tests ( #39589 ) chore: bump h2 from 4.3.0 to 4.4.1 in /libs/langchain_v1 ( #39324 ) fix(langchain):…
30