Devstral Small 2
Analysis Summary
Devstral Small 2 is Mistral's coding-oriented small model, released December 2025. Its intelligence index of 17.4 and coding index of 29.3 place it above the general Ministral 3 family on technical tasks. The terminal bench score of 0.167 and livecodebench of 0.348 confirm a meaningful coding focus relative to its size. Agentic performance at 20.0 is limited but functional for simple tool-use scenarios.
For businesses, this model is best suited to lightweight coding assistance, code review, and simple software engineering tasks where cost is a constraint. It is not a replacement for frontier coding models in complex agentic pipelines, but it can handle routine code generation and debugging tasks reliably. Instruction-following and long-context scores are modest, so complex multi-file tasks may be unreliable.
No pricing data is available for this variant. Teams evaluating small coding models should compare it against similarly sized open-weight alternatives. For organisations already using Mistral's API, it is a practical low-cost option for coding-adjacent workloads that do not require frontier-level capability.
Assessed July 10, 2026
Editorial notes
Devstral Small 2 from Mistral is a coding-focused small model with a 29-point coding index and strong terminal bench performance, suited to lightweight software engineering tasks at low cost.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Devstral Small 2 from Mistral is a coding-focused small model with a 29-point coding index and strong terminal bench performance, suited to lightweight software engineering tasks at low cost.
Benchmark scores
Magenta = intelligence Ā· Ink = technical/agentic Ā· Cyan = content & long-context Ā· Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
17.4 Intelligence IndexĀ·29.3 Coding IndexĀ·20 Agentic IndexĀ·34.3 Math Index
How Devstral Small 2 compares
Devstral Small 2 ranks #169 of 395 AI models we track for overall intelligence, #79 of 160 for coding, #176 of 302 for agentic tasks. Devstral Small 2 is currently free to use via OpenRouter.
Dark bar = input Ā· light bar = output, scaled to the priciest peer.
1M tokens ā 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on content. 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 āFrequently 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 #79 of 160 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.
