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Devstral Medium is a high-performance code generation and agentic reasoning model developed jointly by Mistral AI and All Hands AI. Positioned as a step up from Devstral Small, it achieves 61.6% on SWE-Bench Verified, placing it ahead of Gemini 2.5 Pro and GPT-4.1 in code-related tasks, at a fraction of the cost. It is designed for generalization across prompt styles and tool use in code agents and frameworks. Devstral Medium is available via API only (not open-weight), and supports enterprise deployment on private infrastructure, with optional fine-tuning capabilities.
Quality Index
18.7
202nd of 442
Top 46%
Coding Index
15.9
184th of 352
Top 53%
Math Index
4.7
247th of 268
Top 92%
Price/1M
$0.80
439th cheapest
158% above median
Top 65%
Speed
145 tok/s
Top 15%
TTFT
0.40s
Context Window
131K
145th largest
Top 63%
Input
$0.40
per 1M tokens
Output
$2.00
per 1M tokens
Blended
$0.80
per 1M tokens
Cheaper than 35% of models. Median price is $0.31/1M tokens.
Daily
$0.80
Monthly
$24.00
145
tokens/sec
Faster than 85% of models
0.40
seconds
Faster than 53% of models
0.40
seconds
Faster than 55% of models
Market Median
46 tok/s
217% faster
Median TTFT
0.42s
6% faster
Throughput/Dollar
181
tok/s per $/1M
Speed Comparison
Context Window
131K
tokens
Larger than 37% of models