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High Reasoning

Devstral Small 1.1

Devstral Small 1.1 is a state-of-the-art open-source 24B parameter AI model from Mistral AI, excelling in agentic coding with a 128K context window, top 53.6% SWE-Bench Verified score, and seamless tool use for codebase exploration and multi-file edits. Released under Apache 2.0, it powers autonomous software engineering agents with unmatched versatility and efficiency.

128k Context
High Intelligence
Mar '25 Knowledge

Available for Chat, Vision, and File Uploads.

Performance Benchmarks

SWE-Bench Verified
53.6%
HumanEval
77.4%
MMLU
63.5%

How do you want to interact?

Start a Conversation

Ask anything.
Have a natural conversation, brainstorm ideas, draft emails, or ask for advice.

Start Chatting

Use a Persona

Specialized Experts.
Instruct the AI to act as a Coding Tutor, Marketing Expert, or Travel Guide.

Pick a Persona

Why use Devstral Small 1.1?

Agentic Coding

Excels at using tools to explore codebases, edit multiple files, and power software engineering agents

Function Calling

Supports function calling for advanced tool integration and structured interactions

Lightweight Deployment

24B parameters allow running on a single RTX 4090 or Mac with 32GB RAM for local use

Capability Examples

Codebase Exploration
Explore this Python codebase and summarize the main function in main.py: [code snippet with a simple app]
After analyzing main.py, the main function initializes a Flask app, sets up routes for /hello and /health, and runs the server on port 5000. No issues found; it's a basic web server.
Multi-File Edit
Using tools, fix bug in src/utils.py (divide by zero) and update tests/test_utils.py to cover it. Codebase: [provide snippets].
I read src/utils.py and found divide_by_zero() lacks zero check. Proposing edit: add if denominator == 0: return 0. Updated test_utils.py with new test case asserting zero denominator returns 0. Apply changes?

How to use

1
Go to Chat

Navigate to the "AI Chat" page.

2
Select Model

Ensure Devstral Small 1.1 is selected.

3
Type Prompt

Ask a question or paste code.

4
Interact

Refine the answer by replying to the AI.

Compare LLMs Side-by-Side

Is Devstral Small 1.1 better than Claude 3.5 or Gemini? Test same prompts simultaneously in the Chat Playground.

Open Chat Playground

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