langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- feat(text-splitters): expose encode helper for sentence transformers
- LANGSMITH_TRACING environment variable prevents per-model tracing control
- fix(core)!: flatten generations for `LangChainTracer`
- Support rate limiter on embedding models
- feat(openai): add embeddings rate limiter support
- fix(deepseek): preserve `reasoning_content` for `AIMessages` with `tool_calls`
- When i used deepseek-r1 in non-streaming, i found cannot get reasoning_content from langchain
- Pip install of langchain fails in python3.13t (nogil/free threading) due to orjson
- feat(core): Langsmith Tracing Overriding
- Issue: Deprecation warning guides users to langchain.agents, breaking stream_mode="messages" token streaming
- Docs
- Python not yet supported