# Claude Sonnet 5.5 is now available in Devin

By Steven Van · 2026-09-28

Devin cites a 64.4% FrontierCode 1.1 score for the model, plus Anthropic's figures of 30% faster output and up to 30% lower cost per task.

[Devin](<https://creatorstoolbox.com/tools/devin>) now offers Claude Sonnet 5.5, which [Devin's announcement](<https://devin.ai/blog/claude-sonnet-5-5>) says scores 64.4% on FrontierCode 1.1.

## Benchmark result

Devin describes the 64.4% score as a significant improvement over Sonnet 5. It also says the score surpasses Fable 5.1 at extra high reasoning effort. FrontierCode measures how well models meet the standards of high-quality production codebases.

## Speed and cost

Anthropic reports more than 30% faster output generation and up to 30% lower cost per task than Sonnet 5. Token pricing is unchanged.

[![](<https://devin.ai/images/blog/claude-sonnet-5-5/cover.png>)](<https://devin.ai/blog/claude-sonnet-5-5>)

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Sources

[Original source](<https://devin.ai/blog/claude-sonnet-5-5>)

[Read Claude Sonnet 5.5 is now available in Devin on Creators Toolbox](<https://creatorstoolbox.com/blog/devin-claude-sonnet-5-5-is-now-available-in-devin>)

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Canonical source: https://creatorstoolbox.com/blog/devin-claude-sonnet-5-5-is-now-available-in-devin