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Claude Sonnet 5.5 vs Opus 5.5 vs GPT-6.1 Sol

This story is from 2026-10-05. It is preserved in the archive; the latest stories are on the live feed.

Claude Sonnet 5.5 edged Claude Opus 5.5 on our general-programming benchmark, a payments app, 0.7984 to 0.7926, a margin I read as level. It built the better app, though: it earned 0.9894 to Opus's 0.8732 before a ceiling squeezed them together. Then Opus 5.5 outclassed it on an Atlassian Forge app…

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  1. 2026-10-05 07:01 · DEV Community — AI
    Claude Sonnet 5.5 vs Opus 5.5 vs GPT-6.1 Sol

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