Anthropic’s Claude Opus 5 tops a benchmark index and costs up to half as much as Fable 5
The Decoder · rss · 2026-07-25
Anthropic’s Claude Opus 5 is reported to top the Artificial Analysis Intelligence Index with 61 points, narrowly ahead of Claude Fable 5 and GPT-5.6 Sol.
- It is said to lead on analytical quality and coding.
- The article claims it can cost up to half as much as Fable 5 at lower reasoning tiers.
- The overall conclusion is that the frontier race is still very close.
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