Claude Opus 5.5 outperforms OpenAI's Astra and Fable 5.1 in independent benchmark

Anthropic's Opus 5.5 model tops an independent benchmark, surpassing OpenAI's Astra and Fable.

Published 2h1 sourceImportant

≈ 17sSpeed

The fact

Performance is strong, but usage costs remain high.

This result underscores the competitiveness of recent AI models.

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Auto-synthesis from 1 media source · identified on September 25, 2026