feat(anthropic): add Claude Opus 5 support - #11255
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🦋 Changeset detectedLatest commit: 10a65bf The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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Signed-off-by: Hunter Lovell <40191806+hntrl@users.noreply.github.com>
Johannes du Plessis (johannes117)
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Jul 24, 2026
Jacob Lee (jacoblee93)
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Jul 24, 2026
Hunter Lovell (hntrl)
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Jul 24, 2026
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## langchain@1.5.4 ### Patch Changes - [#11201](#11201) [`a8cd4d9`](a8cd4d9) Thanks [@hntrl](https://github.com/hntrl)! - feat(langchain): add middleware for handling tool execution errors ## @langchain/anthropic@1.5.2 ### Patch Changes - [#11255](#11255) [`c8bd4c4`](c8bd4c4) Thanks [@hntrl](https://github.com/hntrl)! - feat(anthropic): add claude-opus-5 support Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Summary
Adds
claude-opus-5support to@langchain/anthropicand updates the Anthropic SDK to the latest compatible releaseChanges
@langchain/anthropicxhighormaxeffort, while continuing to allow it throughhigheffort.@anthropic-ai/sdkfrom^0.103.0to^0.115.0