Expired65% confidenceBenchmarkExact time

At standard pricing ($3/$15), Sonnet 5 averages $2.29 per task on the Intelligence Index, while Opus 4.8 costs only $1.99, making Sonnet 5 approximately 15% more expensive than Opus 4.8.

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

UnverifiedOn Terminal Bench, mid-tier Sonnet 5.5 scores 28.8% at approximately $0.83 per task, while Sonnet 5's highest tier only reaches 10.3% at approximately $11.6 per task78% similar UnverifiedOpus 5.5 produced approximately 49% more output tokens than Sonnet 5.5, with an equivalent API cost that was nearly half again as expensive.77% similar

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