Expired80% confidenceFactExact time
The cache read price for both Sonnet 5.5 and Opus 5.5 is $0.20 per million tokens, which is the same.
4
Sources
80%
Confidence
Short-term (~14 days)
Relevance
9/29/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 10/13/2026(expired)
Sources
Related Entities
Related Claims
UnverifiedDue to high token consumption, Sonnet 5.5's per-task cost is nearly on par with Fable 5.1.74% similarUnverifiedRunning benchmarks with Sonnet 5.5 in Max mode cost $7.6, dropping to $1.08 and $0.59 under High and Medium modes respectively.74% similarUnverifiedIn the test, Sonnet 5.5's input tokens reached 206.8 million (of which 202.2 million were cache reads), with output tokens of 516,000.74% 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.72% 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 $114.70% similar
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