Devstral Medium vs Devstral 2
Too close to call on our weighted score (Devstral 2 42, Devstral Medium 39). The right pick depends on what you value most.
Mistral AIDevstral Medium
39/100- ECI—
- Price$0.40 / $2.00
- Context128K
- Mistral AI
Devstral 2
42/100- ECI—
- Price$0.40 / $2.00
- Context262K
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Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within 3 points (Devstral 2 42/100, Devstral Medium 39/100), so choose by what matters most for your work: Devstral Medium on price and Devstral 2 for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceSame priceDevstral Medium $0.80 · Devstral 2 $0.80 per 1M tokens (3:1 blend)
- Longest contextDevstral 2Devstral 2 262,144 · Devstral Medium 128,000 tokens
- Widest inputsSame inputsDevstral Medium: Text · Devstral 2: Text
- Self-hostingDevstral 2Publishes downloadable weights
| Measure | Weight | Devstral Medium | Devstral 2 |
|---|---|---|---|
| Price | 50% | 54 | 54 |
| Inputs & features | 30% | 25 | 25 |
| Context window | 20% | 24 | 37 |
| Overall | 100% | 39/100 | 42/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Devstral MediumMistral AI | Devstral 2Mistral AI |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.40 | $0.40 |
| Output | $2.00 | $2.00 |
| Cached input | — | — |
| Blended (3:1) | $0.80 | $0.80 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Mistral API | Official Mistral API |
| Limits | ||
| Context window | 128,000 tokens | 262,144 tokens (best) |
| Max output | 128,000 tokens | 262,144 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | No | No |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | Open |
| API model ID | devstral-medium-2507 | devstral-2512 |
| API providers | 2 | 14 (best) |
| Released | Jul 10, 2025 | Dec 9, 2025 |
| Knowledge cutoff | May 2025 | Dec 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Devstral Medium$8.00
- Devstral 2$8.00
Which should you choose?
Which is better: Devstral Medium or Devstral 2?
It is close. Our weighted score puts them within 3 points (Devstral 2 42/100, Devstral Medium 39/100), so choose by what matters most for your work: Devstral Medium on price and Devstral 2 for long inputs. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Devstral Medium or Devstral 2?
Devstral Medium and Devstral 2 cost the same: $0.40 input / $2.00 output per million tokens.
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Devstral Medium has not been scored yet and Devstral 2 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Devstral Medium and Devstral 2 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Devstral 2 has the largest context window at 262,144 tokens, against 128,000 for Devstral Medium. Maximum output per response: Devstral Medium up to 128,000, Devstral 2 up to 262,144 tokens.
Which can read images, PDFs, audio or video?
Devstral Medium accepts text; Devstral 2 accepts text. They handle the same number of input types.
Are any of these open source?
Devstral 2 publishes its weights and can be self-hosted; Devstral Medium is proprietary.
Which is newer?
Devstral 2 is the newest, released Dec 9, 2025. Devstral Medium came out Jul 10, 2025. Knowledge cutoff: Devstral Medium May 2025, Devstral 2 Dec 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
