Verified65% confidenceBenchmarkExact time
In the deep audit benchmark, Sonnet 5.5's cost is approximately half that of Opus, its score is slightly higher than Opus, and it takes about 5 minutes (roughly half the time Opus takes).
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
10/1/2026
First Seen
Valid until: 12/30/2026
Sources
Related Entities
Related Claims
UnverifiedIn advanced coding scenarios, Sonnet 5.5 reaches 49.4% at the Hi effort level, drops to 46.2% at the Max tier, and costs surge from 42 cents to 21 dollars.77% similarPartially VerifiedOpus 5.5 produced approximately 49% more output tokens than Sonnet 5.5, with an equivalent API cost that was nearly half again as expensive.76% similarUnverifiedIn Phase 1, Sonnet 5.5 took 4 hours and 50 minutes, made 1,670 calls, and incurred an equivalent bill of $164.79, of which cache reads cost $114.73% similarUnverifiedIn the test, Sonnet 5.5 used 19 agents, took 78 minutes, and had an equivalent API cost of $57.34.73% similarUnverifiedDue to high token consumption, Sonnet 5.5's per-task cost is nearly on par with Fable 5.1.72% similar
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