Expired60% confidenceFactExact time
Sonnet 5 is only approximately 72% cheaper than Opus 4.8 Max.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/6/2026
First Seen
Valid until: 10/4/2026(expired)
Sources
Claude Sonnet 5 Hands-On Review: The Hidden Token Trap That Makes 'Low Cost' an Illusion
bilibili浮生千山路w6/30/2026
Related Claims
VerifiedSonnet 5 achieved a score of 80.4% on Terminal Bench 2.1, approaching Opus 4.8.78% 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 tokens78% similarUnverifiedOn knowledge tasks, Sonnet 5.5 scored 67 and Gemini 4 Argon scored 68.9, but Sonnet is cheaper.78% similarUnverifiedIn the test, Sonnet 5.5's cache hit rate exceeded 97%, yet its cost still far surpassed that of Sol.77% similarUnverifiedSonnet 5.5 and Opus 5.5 have the same cache read price, while Sonnet 5.5 is approximately half the price on all other items.76% similar
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