Key Takeaways
Devstral 2 2512 wins:
- Cheaper output tokens
- Better at coding
GPT-5 Nano wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at math
- Supports vision
Price Advantage
Devstral 2 2512
Benchmark Advantage
GPT-5 Nano
Context Window
GPT-5 Nano
Speed
GPT-5 Nano
Pricing Comparison
Price Comparison
| Metric | Devstral 2 2512 | GPT-5 Nano | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.05 | $0.05 | Tie |
| Output (per 1M tokens) | $0.22 | $0.40 | Devstral 2 2512 |
| Cache Read (per 1M) | N/A | $5000.00 | GPT-5 Nano |
Using a 3:1 input/output ratio, Devstral 2 2512 is 33% cheaper overall.
Devstral 2 2512 Providers
Chutes $0.05 (Cheapest)
Mistral $0.40
GPT-5 Nano Providers
OpenAI $0.05 (Cheapest)
Azure $0.05 (Cheapest)
Benchmark Comparison
6
Benchmarks Compared
1
Devstral 2 2512 Wins
5
GPT-5 Nano Wins
Benchmark Scores
| Benchmark | Devstral 2 2512 | GPT-5 Nano | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 22.0 | 26.7 | |
Coding Index Code generation & understanding | 23.7 | 20.3 | |
Math Index Mathematical reasoning | 36.7 | 83.7 | |
MMLU Pro Academic knowledge | 76.2 | 78.0 | |
GPQA Graduate-level science | 59.4 | 67.6 | |
LiveCodeBench Competitive programming | 44.8 | 78.9 |
GPT-5 Nano shows stronger mathematical reasoning abilities.
Cost vs Quality
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Devstral 2 2512
Other models
Context & Performance
Context Window
Devstral 2 2512
262,144
tokens
Max output: 65,536 tokens
GPT-5 Nano
400,000
tokens
Max output: 128,000 tokens
GPT-5 Nano has a 34% larger context window.
Speed Performance
| Metric | Devstral 2 2512 | GPT-5 Nano | Winner |
|---|---|---|---|
| Tokens/second | 64.0 tok/s | 118.7 tok/s | |
| Time to First Token | 0.41s | 122.66s |
GPT-5 Nano responds 86% faster on average.
Capabilities
Feature Comparison
| Feature | Devstral 2 2512 | GPT-5 Nano |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Devstral 2 2512 | GPT-5 Nano |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Mistral AI | OpenAI |
| Released | Dec 2025 | Aug 2025 |
Devstral 2 2512 Modalities
Input
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Output
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GPT-5 Nano Modalities
Input
textimagefile
Output
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