Anthropic
Anthropic's current flagship Opus model for complex agentic work, enterprise workflows, advanced coding, and demanding reasoning. It is a proprietary, API-accessible model with a 1M-token context window.
Anthropic's current flagship Opus model for complex agentic work, enterprise workflows, advanced coding, and demanding reasoning.
57.5
Quality Score
1299
Arena ELO
1M
Parameters
1M
Context
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Jul 2026
Released
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
1299
ELO Score
1285 - 1313
95% Confidence
+/-14 points
2.0K
Battles
Jul 30, 2026
Last Updated