Expired65% confidenceBenchmarkExact time
Sonnet 5's Intelligence Index is 6 points higher than Sonnet 4.6's and surpasses Opus 4.8 on agentic knowledge work tasks.
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/6/2026
First Seen
Valid until: 10/4/2026(expired)
Sources
Is Claude Sonnet 5 Really Cheap? A Cost Breakdown by Task
bilibili为什么叫QQ7/1/2026
Related Claims
UnverifiedIn agentic search tests, Sonnet 5 outperformed Sonnet 4.6 across all effort levels, but its overall performance was below Opus 4.8, placing it at approximately the Opus 4.7 level overall.83% similarUnverifiedSonnet 5's Max Effort mode produces approximately 40% more output tokens per Intelligence Index task compared to Sonnet 4.6.81% similarUnverifiedIn the agentic computer use benchmark, Opus 4.8 on the high setting and Sonnet 5 on the max setting perform comparably, but Sonnet 5 consumes more tokens80% similarUnverifiedOpus 5.5 scored 66 on the Terminal agent benchmark, higher than Sonnet's 55 and Astra's 57.9.80% similar
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