Anthropic ECI chart puts Claude Opus 5 at about 163.5
scaling01 · x · 2026-07-25
Anthropic's ECI chart suggests Claude Opus 5 is around 163.5, based on the benchmarks shown in the image.
- The poster says Anthropic's internal AECI is 162.1, above Mythos 5.
- In a follow-up reply, they estimate Anthropic's internal model is already around 166–168 ECI and could get close to 175 by year-end.
Related event: Rumor: Anthropic's Internal Model Reaches 168 ECI(2 posts)→
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