Claude Fable 5 Lands in Devin

2026-06-12 · windsurf

Windsurf announced on June 9, 2026 that Claude Fable 5 is now available in Devin across Cloud, Desktop, and CLI. The company says the model reached the top score on FrontierCode, its benchmark for real-world engineering tasks judged on quality and mergeability. This is notable for developers using Devin because it brings Anthropic's newest high-end coding model into cloud, local desktop, and command-line agent workflows.

Key Features or Updates

Claude Fable 5 is now live across Devin Cloud, Devin Desktop, and Devin CLI. Windsurf says the model performs well on long-horizon reasoning, debugging, unfamiliar tools, MCP integrations, and computer-use tasks.

Impact on Developers

The update gives Devin users a stronger model option for larger engineering tasks where mergeability and debugging depth matter. It may be especially useful for multi-step agent runs that need to reason across tools and unfamiliar codebases.

How to use it

Developers can select or try Claude Fable 5 in Devin Cloud, Desktop, or CLI where available. It is best evaluated on real tasks with reviewable diffs, tests, and merge-quality checks rather than isolated prompts.

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