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# GPT-5.6 models are now available in Devin

CognitionJuly 9, 20261 min read

GPT-5.6 models are now live in Devin Desktop and Devin CLI. GPT-5.6 is also available as a preview on Devin Cloud **through July 16th, 2026**.

Three models are available in this release:

- Sol: most capable, flagship model
- Terra: balanced performance and cost, competitive with GPT-5.5 at half the price
- Luna: fastest and most affordable

GPT-5.6 advances the frontier on software engineering, with GPT-5.6 Sol built for frontier reasoning and long-horizon agentic work. This is exactly the category of tasks users rely on Devin to tackle.

On [FrontierCode 1.1](https://cognition.ai/blog/frontier-code-1.1), our proprietary benchmark that grades models on real-world engineering tasks based on quality and mergeability, the GPT-5.6 family stands out for pairing strong scores with excellent cost efficiency. GPT-5.6 Sol achieves strong results at nearly half of the cost of the next best model. Terra matches GPT-5.5-level performance at about half the price, and Luna delivers the lowest cost per task of any model we tested.

#### FrontierCode 1.1 ExtendedScore

Score is a weighted aggregate of rubric items. Solutions that don’t pass blocking criteria receive 0.

#### FrontierCode 1.1 ExtendedScorevsCost ($)

Score: a weighted aggregate of the rubric items. Solutions that don’t pass blocking criteria receive 0.

Cost ($): the mean USD spend per rollout. Each dot is a reasoning effort.

GPT-5.6 Sol consumes ACUs at roughly the same rate as GPT-5.5, but with significantly better performance. GPT-5.6 Terra and Luna are more affordable options.

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