langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- [Feature] HSTC — zero-LLM deterministic hybrid compressor (49.2% input-token reduction, measured on n=86 CNN/DailyMail)
- Merge streamed chunks once in the remaining runnable accumulators
- HTMLHeaderTextSplitter loses linked section headings, breaking section-filtered retrieval
- langchain-openai: Responses API streaming never emits a completed event for function_call
- ChatOpenAI Responses structured output loses incomplete-response metadata before include_raw fallback
- feat(langchain): prototype nested tool execution through the agent tool node
- Qdrant hybrid search returns short or empty pages with nonzero offsets
- fix(langchain): match `handle_errors` types against the wrapped parsing error
- feat(langchain): summarize with each call's model, record it in state
- fix(partners): drop `refusal` blocks from request history
- Docs
- Python not yet supported