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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
256K
Modalities
image, text

Capability Radar

28
general
33
coding
37
reasoning
35
scienceest.
36
agents
80
multimodal

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

Rankings

Domain#RankScoreSource
Code Ranking276
32.0
AA
General Ranking329
33.0
AA
Math Reasoning246
35.0
AA
Science331
34.0
AA

Benchmark Scores (LLM Stats)

Code

SWE-Bench Verified53.6%SR

AA Evaluation Indices

Math Index
34.3
Intelligence Index
13.1
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

Reasoning
50
Frontend Development
50
Code
50

Pricing

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

Speed

Tokens/sec49.8
Time to First Token0.62s
Time to Answer0.62s

Provider Price Ranking

Provider Price Ranking

5 providers

Cheapest: MistralMost Expensive: evroc
ProviderInputOutput
1MistralCheapest
$0.1
$0.3
2Vercel AI Gateway
$0.1
$0.3
3LLM Gateway
$0.1
$0.3
4Merge Gateway
$0.1
$0.3
5evroc
$0.12
$0.47

Compare pricing across different API providers for this model.

External Sources