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…
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…
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…
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)…
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…
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…
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`…
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…
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…
Changes since langchain-fireworks==1.6.0 release(fireworks): 1.6.1 (#39975) fix(fireworks): drop reasoning history blocks (#39973) chore(model-profiles): refresh model profile data (#39844)
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…
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)…
Changes since langchain-openai==1.5.2 release(openai): 1.6.0 (#39762) feat(core): add standard model exception types (#39538) fix(openai): raise clear error on unexpected response type in `_create_chat_result` (#39731)
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)…
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)…
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…
Changes since langchain-openai==1.5.0 release(openai): 1.5.1 (#39653) fix(openai): preserve streamed encrypted reasoning (#39635) chore(infra): support langsmith gateway in CI (#39651)
Changes since langchain-anthropic==1.5.5 release(anthropic): 1.5.6 (#39622) fix(anthropic): normalize `tool_search_tool_result` blocks (#39621) fix(anthropic): correct model profile data for Fable 5, Sonnet 5, Opus 4.1…
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…
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…
Changes since langchain-openai==1.4.2 release(openai): 1.4.3 (#39485) fix(openai): filter invalid tool calls from content (#39366) chore(openai): update guidance for responses API for OpenAI-compatible providers…
Changes since langchain-openai==1.4.1 release(openai): 1.4.2 (#39322) fix(openai): handle `ContextWindowExceededError` (#39300) chore: bump the minor-and-patch group across 3 directories with 7 updates (#39187)…
Changes since langchain-anthropic==1.5.3 release(anthropic): 1.5.4 (#39277) fix(anthropic): handle tool schemas with unsupported top-level composition (#39273) chore: bump the minor-and-patch group across 3 directories…
Changes since langchain-core==1.5.1 release(core): 1.5.2 (#39108) fix(core): handle empty string in gateway env vars (#39107) chore: bump setuptools from 82.0.0 to 83.0.0 in /libs/core (#39032) chore: bump jupyterlab…
Changes since langchain-fireworks==1.5.1 release(fireworks): 1.5.2 (#39093) chore(model-profiles): refresh model profile data (#39092) chore(model-profiles): refresh model profile data (#39084) chore(model-profiles)…
Changes since langchain-openai==1.4.0 release(openai): 1.4.1 (#39045) feat(anthropic,fireworks,openai): support langsmith gateway through env var (#38742) fix(openai): correct `gpt-5.3-chat-latest` profile (#39009)