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model · Opus line · Claude family

Claude Opus 4.5

Claude Opus 4.5 is an Anthropic model in the Opus line, released November 24, 2025. Newer in its line: Claude Opus 5 (July 24, 2026).

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released: 2025-11-24
developer: Anthropic
family · line: Claude · Opus(4th of 8)
API ids: claude-opus-4-5-20251101claude-opus-4-5
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price: not on the record

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2025-11-24 · model releasemodel release

platform.claude.com

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AsOf ID: ent_claude-opus-4-5

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"sameAs": ["https://asof.is/record/claude-opus-4-5"],
"identifier": { "@type": "PropertyValue", "propertyID": "asof", "value": "ent_claude-opus-4-5" }

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platform.claude.comprimary · 3

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3 claims on record, 3 currently valid, 0 superseded. Last change 2025-11-24.

Claude Opus 4.5