Key Takeaways
Devstral 2 2512 wins:
- Faster response time
- Better at math
Qwen3.5 397B A17B wins:
- Cheaper input tokens
- Higher intelligence benchmark
- Better at coding
- Supports vision
Price Advantage
Qwen3.5 397B A17B
Benchmark Advantage
Qwen3.5 397B A17B
Context Window
Qwen3.5 397B A17B
Speed
Devstral 2 2512
Pricing Comparison
Price Comparison
| Metric | Devstral 2 2512 | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.40 | $0.39 | Qwen3.5 397B A17B |
| Output (per 1M tokens) | $0.90 | $0.90 | Tie |
| Cache Read (per 1M) | $0.45 | $0.45 | Tie |
Using a 3:1 input/output ratio, Qwen3.5 397B A17B is 1% cheaper overall.
Devstral 2 2512 Providers
No provider data available
Qwen3.5 397B A17B Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
0
Devstral 2 2512 Wins
3
Qwen3.5 397B A17B Wins
Benchmark Scores
| Benchmark | Devstral 2 2512 | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 22.0 | 40.1 | |
Coding Index Code generation & understanding | 23.7 | 37.4 | |
Math Index Mathematical reasoning | 36.7 | - | - |
MMLU Pro Academic knowledge | 76.2 | - | - |
GPQA Graduate-level science | 59.4 | 86.1 | |
LiveCodeBench Competitive programming | 44.8 | - | - |
Qwen3.5 397B A17B significantly outperforms in coding benchmarks.
Cost vs Quality
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Devstral 2 2512
Other models
Context & Performance
Context Window
Devstral 2 2512
262,144
tokens
Qwen3.5 397B A17B
262,144
tokens
Speed Performance
| Metric | Devstral 2 2512 | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
| Tokens/second | 81.2 tok/s | 55.5 tok/s | |
| Time to First Token | 0.39s | 1.55s |
Devstral 2 2512 responds 46% faster on average.
Capabilities
Feature Comparison
| Feature | Devstral 2 2512 | Qwen3.5 397B A17B |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Devstral 2 2512 | Qwen3.5 397B A17B |
|---|---|---|
| License | Open Source | Open Source |
| Author | Mistral AI | Qwen |
| Released | Dec 2025 | Feb 2026 |
Devstral 2 2512 Modalities
Input
text
Output
text
Qwen3.5 397B A17B Modalities
Input
textimagevideo
Output
text