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Devstral 2

Devstral 2 is a 123B open-weight agentic coding model with 72.2% on SWE-bench Verified, a context window of 256K tokens, and support for codebase exploration and multi-file orchestration.

Tool Use
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'mistral/devstral-2',
  prompt: 'Why is the sky blue?'
})
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Frequently Asked Questions

  • What is Devstral 2's score on SWE-bench Verified?

    72.2% on SWE-bench Verified, per Mistral AI's Devstral 2 announcement.

  • What is the context window?

    256K tokens, enabling entire repositories, long test suites, and complex dependency chains to be held in context simultaneously.

  • What license does Devstral 2 use?

    A modified MIT license that permits commercial deployments.

  • How does Devstral 2 differ from Devstral Small 2?

    Devstral 2 (123B) outperforms Devstral Small 2 (24B) on benchmarks. Devstral Small 2 is 24B parameters, supports image inputs, and uses the Apache 2.0 license.

  • Can Devstral 2 handle failure detection and auto-correction?

    Yes. Automated failure detection with auto-correction is a listed production workflow capability.