# Devstral Small 1.0

A 24B text model, open source model that excels at using tools to explore codebases, editing multiple files and power software engineering agents.

- API names: `devstral-small-2505`
- Status: Retired
- Type: Open, Specialist
- Release date: 2025-05-21
- Version: 25.05
- Context length: 128k
- Input: text
- Output: text
- Features: structured-outputs, function-calling, document-qna, prefix, chat-completions, batching
- Speed rating: 3/5
- Performance rating: 3/5
- Pricing: Input $0.1 /M Tokens; Output $0.3 /M Tokens
- Licenses: Apache 2.0
- Open weights: [Weights](https://huggingface.co/mistralai/Devstral-Small-2505), 24B parameters, Apache 2.0
- Deprecation date: 2025-10-31
- Retirement date: 2025-11-30
- Replacement: [Mistral Medium 3.5](/models/mistral-medium-3-5-26-04)