Claude Opus 4.1 (<a class="inline-link" href="/docs/en/about-claude/model-deprecations">deprecated</a>) lifecycle transition: active → deprecated.
The change
What changed
Before: active
↓
After: deprecated
Evidence
Verbatim from source
""Model name: Claude Opus 4.1 (deprecated)""
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How we verified this
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Verification method
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9d ago
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