Unverified50% confidenceBenchmarkExact time
Claude Opus 5.5, released by Anthropic, scored 167 on Epoch AI's ECI benchmark, ranking first in the world.
1
Sources
50%
Confidence
Short-term (~14 days)
Relevance
10/5/2026
First Seen
Valid until: 10/19/2026
Sources
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Related Claims
UnverifiedClaude Opus 5.5's score on the ECI benchmark surpassed competing products such as OpenAI's GPT-5.5 Pro.68% similarUnverifiedOpus 5.5 has already reached the level of the previous flagship Faber 5.1 on most tasks.64% similarUnverifiedOpus 5 achieved a 26% pass rate on the enterprise automation benchmark, higher than Fable's 17.4%.63% similarUnverifiedGLM-5.3-Flash achieved a score of 57 on the Artificial Analysis composite intelligence index evaluation, on par with Claude Opus 4.8.63% similarUnverifiedOpus 5在AI Omniscience测试拿了31分，避免瞎编的能力优于Opus 4.863% similar
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