Unverified50% confidenceBenchmarkExact time
Claude Haiku 5.5 scored 0.95, surpassing Claude Sonnet 5's score of 0.88.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/12/2026
First Seen
Valid until: 1/10/2027
Sources
Related Entities
Related Claims
UnverifiedClaude Haiku jumped from 0.68 in version 4.5 to 0.95 in version 5.5, an improvement of 27 points.80% similarUnverifiedClaude Sonnet 5.5 had a fidelity rate of 93.2% and Claude Haiku 5.5 had a fidelity rate of 94.6%, with the smaller model performing better.73% similarUnverifiedClaude Haiku 4.5, which ranked highest in Brier Skill, scored only +0.013, with the confidence interval still spanning zero.72% similar
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