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ModelRetiredProprietaryfamily · Claude

Claude Opus 4

Anthropic

Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...

quality67

Updated 40 min ago · first seen 11 Sept 2026

model_01M293VBDH9G5XPNG0415Q4MR9

Context
200K tokens
T2 · 40 min ago
Released
22 May 2025
T2 · 40 min ago
Knowledge cutoff
Jan 2025
T2 · 40 min ago

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history · Knowledge cutoff

1 claims · 1 propertiesShow all properties

Knowledge cutoffknowledge_cutoff1

Claim history for Knowledge cutoff
ValueValid from → toStatusSourceConfidenceExtractor
Jan 2025currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →