Devstral Small 2
Analysis Summary
Devstral Small 2 is a Mistral model focused on software development workloads. Its coding results are materially stronger than its general reasoning results, and terminal performance is better than the other Mistral variants evaluated here. Agentic results remain modest, so it should not be treated as a fully autonomous engineering system.
The model fits code completion, small repository changes, test generation, and developer-assistance tasks where a human reviews the result. Its instruction-following and long-context measures are limited, making complex implementation plans, broad refactors, and customer-facing technical explanations less dependable. Pricing data is not supplied, so its value case rests on its compact positioning rather than a verified cost advantage.
Adopt it as a coding specialist for bounded tasks and internal workflows. Keep stronger reasoning models available for architecture, review, and multi-step tool use.
Assessed August 9, 2026
Editorial notes
Devstral Small 2 offers Mistral's strongest coding profile in this group, with better terminal performance than its siblings and low-cost positioning, but reasoning and agentic reliability remain limited.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Devstral Small 2 offers Mistral's strongest coding profile in this group, with better terminal performance than its siblings and low-cost positioning, but reasoning and agentic reliability remain limited.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
17.7 Intelligence Index·29.3 Coding Index·10.8 Agentic Index·34.3 Math Index
How Devstral Small 2 compares
Devstral Small 2 ranks #196 of 428 AI models we track for overall intelligence, #113 of 201 for coding, #116 of 183 for agentic tasks. Devstral Small 2 is currently free to use via OpenRouter.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on business fit. The pulled-in value corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Frequently asked questions about Devstral Small 2
How much does Devstral Small 2 cost?
Devstral Small 2 is currently available for free via OpenRouter.
Is Devstral Small 2 good for coding?
On our coding benchmark index, Devstral Small 2 ranks #113 of 201 models, placing it in the broader range of the field for code generation and debugging.
Who created Devstral Small 2?
Devstral Small 2 is developed by Mistral and was released on December 9, 2025.