Pull Requests langchain-ai/langchain

feat(model-profiles): plain-English summary for profile refresh PRs feature model-profiles internal size: L

#38218 opened 2026-06-17 14:42 by mdrxy

chore(openrouter): bump `openrouter` floor to 0.9.2, drop file workaround integration infra dependencies internal openrouter size: M

#38216 opened 2026-06-17 14:34 by mdrxy

test: cover cache_control passthrough on OpenRouter tool defs integration tests internal openrouter size: XS

#38215 opened 2026-06-17 14:33 by mdrxy

feat(openrouter): surface `parallel_tool_calls` on `bind_tools` integration feature internal openrouter size: XS

#38214 opened 2026-06-17 14:31 by mdrxy

chore(langchain): add types in agent middleware tests langchain infra dependencies external trusted-contributor size: M

#38188 opened 2026-06-16 08:52 by cbornet

fix(core)!: include multimodal blocks in `get_buffer_string` prefix format core breaking fix internal size: S

#38174 opened 2026-06-15 19:32 by mdrxy

feat(openrouter): pass OpenRouter server tools through `bind_tools` integration feature internal openrouter size: S

#38161 opened 2026-06-15 15:02 by mdrxy

fix(core): add messages to bare `raise ValueError` calls integration core fix anthropic internal size: XS

#38158 opened 2026-06-15 04:28 by mdrxy

fix(core): use `asyncio.get_running_loop()` in async contexts integration core fix openai internal size: XS

#38157 opened 2026-06-15 04:27 by mdrxy

fix(langchain): make `write_todos` calls tool-only to stop duplicated plan text langchain fix internal size: XS

#38132 opened 2026-06-13 06:41 by mdrxy

feat(perplexity): native content-block streaming events integration feature perplexity internal size: L

#38070 opened 2026-06-11 13:56 by nick-hollon-lc

feat(fireworks): native content-block streaming events integration feature fireworks internal size: L

#38050 opened 2026-06-11 01:12 by nick-hollon-lc

feat(openrouter): native content-block streaming events integration feature internal openrouter size: L

#38030 opened 2026-06-10 19:16 by nick-hollon-lc

feat(groq): native content-block streaming events integration feature groq internal size: L

#38029 opened 2026-06-10 18:57 by nick-hollon-lc

feat(mistralai): native content-block streaming events integration feature mistralai internal size: L

#38022 opened 2026-06-10 16:26 by nick-hollon-lc

feat(ollama): native content-block streaming events integration feature ollama internal size: L

#38019 opened 2026-06-10 14:23 by nick-hollon-lc

feat(openai): provider-aware native streaming for compatible subclasses integration feature deepseek openai xai internal size: S

#38006 opened 2026-06-10 03:02 by nick-hollon-lc

feat(openai): native content-block streaming for the Responses API integration feature openai internal size: M

#38004 opened 2026-06-10 02:21 by nick-hollon-lc

feat(openai): native content-block streaming for chat completions integration feature openai internal size: L

#37999 opened 2026-06-10 00:05 by nick-hollon-lc

feat(core): native content-block streaming with Anthropic reference integration core feature anthropic internal size: L

#37995 opened 2026-06-09 21:58 by nick-hollon-lc

feat(agents): Option B — `_BackendProtocol` in langchain, backend on `AgentRuntime` langchain feature internal size: XS

#37928 opened 2026-06-05 20:57 by sydney-runkle

fix(core): resolve string annotations in `_create_subset_model_v2` core fix external size: S new-contributor

#37924 opened 2026-06-05 15:26 by qflen

feat(agents): `AgentRuntime` fields + `_build_runtime` hook for middleware langchain feature internal size: M

#37879 opened 2026-06-03 17:29 by sydney-runkle

fix(langchain): sanitize anthropic cache markers on fallback retries langchain fix internal size: M

#37867 opened 2026-06-02 22:33 by hntrl

RFC: track anthropic service tier and geo tokens integration anthropic internal size: M

#37759 opened 2026-05-28 20:56 by baskaryan

feat(core,anthropic,openai): `aclose()` lifecycle + latched fallbacks integration core feature anthropic openai internal size: L

#37718 opened 2026-05-27 19:31 by baskaryan

fix(langchain): neutralize `write_todos` tool message langchain fix internal size: S

#37698 opened 2026-05-26 15:23 by nick-hollon-lc

feat(groq): map context-length errors to `ContextOverflowError` integration feature groq external size: S new-contributor

#37676 opened 2026-05-25 01:14 by adityasingh2400

feat(mistralai): surface citation metadata from chat responses integration feature mistralai external size: S new-contributor

#37008 opened 2026-04-25 22:55 by JulienRabault

fix(core): use parsed mime_type for base64 file blocks in openai translator core fix external size: S new-contributor

#36940 opened 2026-04-22 07:21 by anmolg1997