Skip to main content

Devstral Small 2

MistralMistralOpen WeightApache 2.0 · Commercial OK

Description

Devstral Small 1.1 (also called devstral-small-2507) is based on the Mistral-Small-3.1 foundation model and contains approximately 24 billion parameters. It supports a 128k token context window, which allows it to handle multi-file code inputs and long prompts typical in software engineering workflows. The model is fine-tuned specifically for structured outputs, including XML and function-calling formats. This makes it compatible with agent frameworks such as OpenHands and suitable for tasks like program navigation, multi-step edits, and code search. It is licensed under Apache 2.0 and available for both research and commercial use.

Release Date
2025-12-09
Parameters
24.0B
Context Length
131K
Modalities
text

Capability Radar

32
general
26
coding
37
reasoning
35
scienceest.
0
agents
0
multimodal

Science uses a reasoning proxy when dedicated science benchmarks are unavailable.

Rankings

Domain#RankScoreSource
Code Ranking240
34.0
AA
General Ranking297
36.0
AA
Math Reasoning246
35.0
AA
Science307
35.0
AA

Benchmark Scores (LLM Stats)

Code

SWE-Bench Verified53.6%SR

AA Evaluation Indices

Math Index
34.3
Coding Index
20.7
Intelligence Index
19.5
Mmlu Pro
0.7
Gpqa
0.5
Livecodebench
0.3
Aime 25
0.3
Ifbench
0.3
Scicode
0.3
Lcr
0.2
Tau2
0.2
Terminalbench Hard
0.2
Hle
0.0

LLM Stats Category Scores

Code
50
Frontend Development
50
Reasoning
50

Pricing

Input PriceFree
Output PriceFree
Blended Price (3:1)Free

Speed

Tokens/sec61.2 tokens/s
Time to First Token0.56s
Time to Answer0.56s

Available Providers

(LS internal units)

No provider data available

External Sources