Devstral Medium vs Devstral Small vs Qwen Flash
Qwen Flash comes out ahead, 68 to 57 and 39 on our weighted score, and it is the cheaper option too.
Mistral AIDevstral Medium
39/100- ECI—
- Price$0.40 / $2.00
- Context128K
- Mistral AI
Devstral Small
57/100- ECI—
- Price$0.10 / $0.30
- Context128K
- Our pick
Alibaba (Qwen)Qwen Flash
68/100- ECI—
- Price$0.05 / $0.40
- Context1M
Qwen Flash is our pick
Qwen Flash is the better all-round choice, scoring 68/100 against Devstral Small (57) and Devstral Medium (39). It leads on price, inputs & features and context window. 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 priceQwen FlashQwen Flash $0.138 · Devstral Small $0.15 · Devstral Medium $0.80 per 1M tokens (3:1 blend)
- Longest contextQwen FlashQwen Flash 1,000,000 · Devstral Medium 128,000 · Devstral Small 128,000 tokens
- Widest inputsSame inputsDevstral Medium: Text · Devstral Small: Text · Qwen Flash: Text
- Self-hostingDevstral SmallPublishes downloadable weights
| Measure | Weight | Devstral Medium | Devstral Small | Qwen Flash |
|---|---|---|---|---|
| Price | 50% | 54 | 89 | 91 |
| Inputs & features | 30% | 25 | 25 | 35 |
| Context window | 20% | 24 | 24 | 60 |
| Overall | 100% | 39/100 | 57/100 | 68/100 |
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 SmallMistral AI | Qwen FlashAlibaba (Qwen) |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.40 | $0.10 | $0.05 (best) |
| Output | $2.00 | $0.30 (best) | $0.40 |
| Cached input | — | — | — |
| Blended (3:1) | $0.80 | $0.15 | $0.138 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Mistral API | Official Mistral API | Official Alibaba API |
| Limits | |||
| Context window | 128,000 tokens | 128,000 tokens | 1,000,000 tokens (best) |
| Max output | 128,000 tokens (best) | 128,000 tokens (best) | 32,768 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | No | No |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | No | No | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | No | No |
| Availability | |||
| Weights | Proprietary | Open | Proprietary |
| API model ID | devstral-medium-2507 | devstral-small-2507 | qwen-flash |
| API providers | 2 | 2 | 6 (best) |
| Released | Jul 10, 2025 | Jul 10, 2025 | Jul 28, 2025 |
| Knowledge cutoff | May 2025 | May 2025 | Apr 2024 |
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 Small$1.60
- Qwen Flash$1.30
Which should you choose?
Which is better: Devstral Medium, Devstral Small or Qwen Flash?
Qwen Flash is the better all-round choice, scoring 68/100 against Devstral Small (57) and Devstral Medium (39). It leads on price, inputs & features and context window. 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, Devstral Small or Qwen Flash?
Qwen Flash is cheaper at $0.05 input / $0.40 output per million tokens (official Alibaba API price). Devstral Small costs $0.10 input / $0.30 output per million tokens (official Mistral API price); Devstral Medium costs $0.40 input / $2.00 output per million tokens (official Mistral API price). At a typical mix of three input tokens to one output token, that is $0.138 per million tokens for Qwen Flash versus $0.15 for Devstral Small (1.1× as much) and $0.80 for Devstral Medium (5.8× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Devstral Medium has not been scored yet, Devstral Small has not been scored yet and Qwen Flash has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Devstral Medium, Devstral Small and Qwen Flash yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
Qwen Flash has the largest context window at 1,000,000 tokens, against 128,000 for Devstral Medium and 128,000 for Devstral Small. Maximum output per response: Devstral Medium up to 128,000, Devstral Small up to 128,000, Qwen Flash up to 32,768 tokens.
Which can read images, PDFs, audio or video?
Devstral Medium accepts text; Devstral Small accepts text; Qwen Flash accepts text. They handle the same number of input types.
Are any of these open source?
Devstral Small publishes its weights and can be self-hosted; Devstral Medium and Qwen Flash is proprietary.
Which is newer?
Qwen Flash is the newest, released Jul 28, 2025. Devstral Medium came out Jul 10, 2025; Devstral Small came out Jul 10, 2025. Knowledge cutoff: Devstral Medium May 2025, Devstral Small May 2025, Qwen Flash Apr 2024.
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.
