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Devstral Small 1.1

Devstral Small 1.1 is an Apache 2.0 open-source agentic coding model with 46.8% on SWE-bench Verified, built jointly by Mistral AI and All Hands AI.

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


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

  • Who built Devstral Small 1.1?

    Mistral AI and All Hands AI, the team behind the OpenHands agentic framework, built it together.

  • What is Devstral Small 1.1's SWE-bench Verified score?

    46.8%, which exceeded all prior open-source models by more than 6 percentage points.

  • What agent scaffolds does Devstral Small 1.1 support?

    OpenHands and SWE-Agent are explicitly supported, and Devstral Small 1.1's tool-use capabilities make it compatible with other scaffolds as well.

  • What is the API pricing for Devstral Small 1.1?

    Pricing appears on this page and updates as providers adjust their rates. AI Gateway routes traffic through the configured provider.

  • How does Devstral Small 1.1 compare to Devstral Small 2?

    Devstral Small 2 is the successor with improved SWE-bench scores (68.0%), a 256K context window, and multimodal (image) input support. Devstral Small 1.1 remains relevant for teams already using it or preferring its established ecosystem integrations.