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LangChain updates Anthropic integration, fixing model profiles and tool usage

By PulseAugur Editorial · [2 sources] ·

LangChain has released updates for its Anthropic integration, with version 1.5.6 addressing issues related to tool search result formatting and model profile data for specific Anthropic models like Sonnet 5 and Opus 4.1. The previous version, 1.5.5, focused on fixing how reasoning tokens were reported in usage metadata and resolving a KeyError in file-tool middleware, alongside refreshing model profile data and improving credential error reporting. AI

IMPACT Minor improvements to LangChain's integration with Anthropic models, enhancing tool usage and model profile accuracy.

RANK_REASON This is a software library release for an integration, not a core AI model release.

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AI-generated summary · Google Gemini · from 2 sources. How we write summaries →

LangChain updates Anthropic integration, fixing model profiles and tool usage

COVERAGE [2]

  1. LangChain — Releases TIER_1 English(EN) · github-actions[bot] ·

    langchain-anthropic==1.5.6

    <p>Changes since langchain-anthropic==1.5.5</p> <p>release(anthropic): 1.5.6 (<a class="issue-link js-issue-link" href="https://github.com/langchain-ai/langchain/pull/39622">#39622</a>)<br /> fix(anthropic): normalize <code>tool_search_tool_result</code> blocks (<a class="issue-l…

  2. LangChain — Releases TIER_1 English(EN) · github-actions[bot] ·

    langchain-anthropic==1.5.5

    <p>Changes since langchain-anthropic==1.5.4</p> <p>release(anthropic): 1.5.5 (<a class="issue-link js-issue-link" href="https://github.com/langchain-ai/langchain/pull/39597">#39597</a>)<br /> fix(anthropic): report reasoning tokens in usage metadata (<a class="issue-link js-issue…

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