OpenRouter finds Claude Sonnet 5.5 matches Opus 5.5 on coding tasks at half the price
Overview
OpenRouter tested Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5 on 11 coding tasks with hidden tests, and all three passed every task.
OpenRouter reports that Sonnet 5.5 scored higher than Opus 5.5 on GPQA Diamond (92.4% vs. 90.4%) and τ-bench airline (78.7% vs. 75.5%) at half Opus's per-token price.
OpenRouter also reports that Haiku 5.5 cost about one-nineteenth to one-thirtieth as much as Opus 5.5 per coding task.
Written by AI from the articles below · updated Oct 29, 8:30 PM ET
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- OpenRouter BlogOfficialClaude Sonnet 5.5 matches Opus 5.5 on coding tests at half the price
AIOpenRouter tested Claude Opus 5.5, Sonnet 5.5, and Haiku 5.5 on 11 coding tasks with hidden tests and all three passed every one. Sonnet 5.5 scored higher than Opus 5.5 on GPQA Diamond (92.4% vs 90.4%) and τ-bench airline (78.7% vs 75.5%) at half the per-token price, while Haiku 5.5 cost about a 19th to a 30th as much as Opus per coding task.
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