Claude Opus 5.5 is now available in Devin.
On FrontierCode 1.1, Opus 5.5 takes the #1 sport from Fable 5 at a fraction of the cost.
Sep 22, 2026 · 5:35 PM UTC
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On FrontierCode 1.1, our benchmark for real-world engineering tasks that grades mergeability and quality, Opus 5.5 scores 65.3% on Extended — taking the leading spot from Fable 5 at a fraction of the cost.
Read more: devin.ai/blog/claude-opus-5-…
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Try it in Devin Desktop and Devin CLI:
devin.ai/download
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