langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- [Bug]: Missing initial <think> tag in state accumulation when using stream_mode=["messages"] with Reasoning Models (vLLM/MiniMax)
- logprobs not returned when using the response api
- Typing issue in StructuredTool._injected_args_keys
- ExperimentalMarkdownSyntaxTextSplitter silently discards content from unclosed code blocks
- _extract_reasoning_from_additional_kwargs should ignore empty strings
- Allow ReAct supervisors to call subagents defined as LangGraph nodes (not only tools)
- Add support for Anthropic via Bedrock's `tool_search_tool_regex` in `ChatAnthropicBedrock`
- perf: HuggingFaceEmbeddings causes excessive device-to-cpu transfers per batch
- langchain-openai: _consolidate_calls raises UnboundLocalError for unrecognized server tool names
- openai model: tool_choice="required" not compatible with thinking models (qwen3.5-plus)
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