https://freedom.tech/project/langchain/ Every LangChain release and update tracked by Freedom.Tech. en Freedom.Tech is a Foundation project. https://foundation.xyz Freedom.Tech, a Foundation project (https://foundation.xyz) https://freedom.tech/posts/2026-08-21-langchain-perplexity-1-4-1/ https://freedom.tech/posts/2026-08-21-langchain-perplexity-1-4-1/ Fri, 21 Aug 2026 14:08:45 GMT Perplexity integration fixes message type handling, preserves caller parameters, and updates dependencies for compatibility https://freedom.tech/posts/2026-08-19-langchain-openai-1-6-0/ https://freedom.tech/posts/2026-08-19-langchain-openai-1-6-0/ Wed, 19 Aug 2026 21:45:02 GMT Langchain-openai adds standard model exception types and improves error handling for unexpected OpenAI API response types https://freedom.tech/posts/2026-08-19-langchain-anthropic-1-6-0/ https://freedom.tech/posts/2026-08-19-langchain-anthropic-1-6-0/ Wed, 19 Aug 2026 21:39:54 GMT LangChain's Anthropic integration adds standard model exception types and fixes directory search scope issues https://freedom.tech/posts/2026-08-19-langchain-core-1-6-0/ https://freedom.tech/posts/2026-08-19-langchain-core-1-6-0/ Wed, 19 Aug 2026 15:55:57 GMT Resolves tool schema serialization issues, adds standard exception types, and improves Windows compatibility in langchain-core https://freedom.tech/posts/2026-08-18-langchain-openai-1-5-2/ https://freedom.tech/posts/2026-08-18-langchain-openai-1-5-2/ Tue, 18 Aug 2026 17:38:11 GMT Fixes reasoning item boundaries, adds gateway metadata extraction, and extends token counting support to o-series models https://freedom.tech/posts/2026-08-18-langchain-openai-1-5/ https://freedom.tech/posts/2026-08-18-langchain-openai-1-5/ Tue, 18 Aug 2026 01:51:38 GMT Adds gateway metadata extraction from response headers. Fixes o-series token counting https://freedom.tech/posts/2026-08-14-langchain-openrouter-0-2-8/ https://freedom.tech/posts/2026-08-14-langchain-openrouter-0-2-8/ Fri, 14 Aug 2026 19:03:45 GMT LangChain OpenRouter now preserves cost metadata and provider information in usage chunks and response metadata https://freedom.tech/posts/2026-08-13-langchain-anthropic-1-5-6/ https://freedom.tech/posts/2026-08-13-langchain-anthropic-1-5-6/ Thu, 13 Aug 2026 02:31:03 GMT LangChain Anthropic 1.5.6 fixes tool result block normalization and corrects model profile data for recent Claude versions https://freedom.tech/posts/2026-08-11-langchain-1-3-15/ https://freedom.tech/posts/2026-08-11-langchain-1-3-15/ Tue, 11 Aug 2026 19:11:09 GMT LangChain 1.3.15 adds state_schema to wrap_tool_call, exposes trace_policy on AgentMiddleware, and fixes middleware control flow, tool call handling, and structured output parsing https://freedom.tech/posts/2026-08-11-langchain-core-1-5-4/ https://freedom.tech/posts/2026-08-11-langchain-core-1-5-4/ Tue, 11 Aug 2026 18:03:10 GMT Langchain-core 1.5.4 fixes Pydantic 2.14 compatibility, stops StructuredPrompt from mutating caller kwargs, and preserves tool argument schemas https://freedom.tech/posts/2026-08-07-langchain-openai-1-4-2/ https://freedom.tech/posts/2026-08-07-langchain-openai-1-4-2/ Fri, 07 Aug 2026 13:58:15 GMT Filters langchain-generated content-block IDs; Handles ContextWindowExceededError https://freedom.tech/posts/2026-08-05-langchain-anthropic-1-5-4/ https://freedom.tech/posts/2026-08-05-langchain-anthropic-1-5-4/ Wed, 05 Aug 2026 19:03:33 GMT Langchain-anthropic 1.5.4 fixes tool schema composition handling, preserves tool_choice settings, and adds user_profile_id attribute support https://freedom.tech/posts/2026-07-24-langchain-anthropic-1-5-2/ https://freedom.tech/posts/2026-07-24-langchain-anthropic-1-5-2/ Fri, 24 Jul 2026 19:08:22 GMT LangChain Anthropic added Claude Opus 5 model support for AI tooling integrations https://freedom.tech/posts/2026-07-23-langchain-openai-1-4-1/ https://freedom.tech/posts/2026-07-23-langchain-openai-1-4-1/ Thu, 23 Jul 2026 20:31:28 GMT LangChain OpenAI adds LangSmith gateway support via environment variable and fixes GPT-5.3 profile configuration https://freedom.tech/posts/2026-07-23-langchain-anthropic-1-5-1/ https://freedom.tech/posts/2026-07-23-langchain-anthropic-1-5-1/ Thu, 23 Jul 2026 20:23:17 GMT LangChain's Anthropic integration now supports LangSmith gateway via environment variable and enables structured output for Claude Opus 4.8 https://freedom.tech/posts/2026-07-21-langchain-anthropic-1-5-0/ https://freedom.tech/posts/2026-07-21-langchain-anthropic-1-5-0/ Tue, 21 Jul 2026 18:17:26 GMT Adds reasoning-effort as a standard parameter; Fixes builtin tool recognition https://freedom.tech/posts/2026-07-21-langchain-openai-1-4-0/ https://freedom.tech/posts/2026-07-21-langchain-openai-1-4-0/ Tue, 21 Jul 2026 16:09:39 GMT Adds reasoning-effort parameter; Bumps Pillow to 12.3.0 https://freedom.tech/posts/2026-07-21-langchain-core-1-5-0/ https://freedom.tech/posts/2026-07-21-langchain-core-1-5-0/ Tue, 21 Jul 2026 03:37:39 GMT Adds reasoning effort as a standard chat-model parameter https://freedom.tech/posts/2026-07-10-langchain-1-3-13/ https://freedom.tech/posts/2026-07-10-langchain-1-3-13/ Fri, 10 Jul 2026 23:06:20 GMT LangChain adds Meta model support via new meta extra and implements explicit prompt caching for OpenAI models https://freedom.tech/posts/2026-07-08-langchain-openai-1-3-4/ https://freedom.tech/posts/2026-07-08-langchain-openai-1-3-4/ Wed, 08 Jul 2026 23:00:08 GMT Suppresses Pydantic serializer warnings on structured output parsed fields and fixes async context loop handling https://freedom.tech/posts/2026-07-08-langchain-1-3-12/ https://freedom.tech/posts/2026-07-08-langchain-1-3-12/ Wed, 08 Jul 2026 22:38:27 GMT LangChain 1.3.12 fixes interrupt propagation in tool retry middleware, prevents process-group kills in shell operations, and sanitizes Anthropic cache markers on fallback retries https://freedom.tech/posts/2026-07-05-langchain-mistralai-1-1-6/ https://freedom.tech/posts/2026-07-05-langchain-mistralai-1-1-6/ Sun, 05 Jul 2026 21:30:35 GMT Surfaces citation metadata from chat responses. Model profile data refreshed https://freedom.tech/posts/2026-07-05-langchain-openrouter-0-2-6/ https://freedom.tech/posts/2026-07-05-langchain-openrouter-0-2-6/ Sun, 05 Jul 2026 20:53:14 GMT Adds support for custom HTTP header injection via default headers https://freedom.tech/posts/2026-06-22-langchain-1-3-11/ https://freedom.tech/posts/2026-06-22-langchain-1-3-11/ Mon, 22 Jun 2026 23:00:47 GMT LangChain 1.3.11 fixes strict tool mode enforcement for non-OpenAI compatible models and updates dependencies https://freedom.tech/posts/2026-06-22-langchain-openai-1-3-3/ https://freedom.tech/posts/2026-06-22-langchain-openai-1-3-3/ Mon, 22 Jun 2026 22:54:23 GMT Fixes tool schema strictness for OpenAI-compatible models and removes unnecessary response storage fields and stop parameters from API calls https://freedom.tech/posts/2026-06-18-langchain-core-1-4-8/ https://freedom.tech/posts/2026-06-18-langchain-core-1-4-8/ Thu, 18 Jun 2026 19:39:42 GMT Langchain-core 1.4.8 memoizes tool schemas, caches JSON schemas, preserves token usage in streaming, and drops Python 3.9 support https://freedom.tech/posts/2026-06-13-langchain-openai-1-3-1/ https://freedom.tech/posts/2026-06-13-langchain-openai-1-3-1/ Sat, 13 Jun 2026 02:42:27 GMT Fixes streamed tool call normalization and structured output fallbacks, adds package version tracking to tracing metadata https://freedom.tech/posts/2026-06-12-langchain-1-3-8/ https://freedom.tech/posts/2026-06-12-langchain-1-3-8/ Fri, 12 Jun 2026 04:20:47 GMT Langchain 1.3.8 tightens structured output model fallbacks and fixes async middleware decorator typing https://freedom.tech/posts/2026-06-11-langchain-model-profiles-0-0-6/ https://freedom.tech/posts/2026-06-11-langchain-model-profiles-0-0-6/ Thu, 11 Jun 2026 03:06:59 GMT Tool call chunk validation added to standard streaming tests, improving LLM integration reliability https://freedom.tech/posts/2026-06-10-langchain-mistralai-1-1-5/ https://freedom.tech/posts/2026-06-10-langchain-mistralai-1-1-5/ Wed, 10 Jun 2026 21:53:38 GMT Adds content block token support in callbacks and stabilizes integration tests with rate limiting