Key Takeaways
Devstral Medium wins:
- Faster response time
GPT-5 Mini wins:
- Cheaper input tokens
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
- Has reasoning mode
Price Advantage
GPT-5 Mini
Benchmark Advantage
GPT-5 Mini
Context Window
GPT-5 Mini
Speed
Devstral Medium
Pricing Comparison
Price Comparison
| Metric | Devstral Medium | GPT-5 Mini | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.40 | $0.25 | GPT-5 Mini |
| Output (per 1M tokens) | $2.00 | $2.00 | Tie |
| Cache Read (per 1M) | N/A | $0.03 | GPT-5 Mini |
Using a 3:1 input/output ratio, GPT-5 Mini is 14% cheaper overall.
Devstral Medium Providers
No provider data available
GPT-5 Mini Providers
No provider data available
Benchmark Comparison
7
Benchmarks Compared
0
Devstral Medium Wins
6
GPT-5 Mini Wins
Benchmark Scores
| Benchmark | Devstral Medium | GPT-5 Mini | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 18.7 | 41.2 | |
Coding Index Code generation & understanding | 15.9 | 35.3 | |
Math Index Mathematical reasoning | 4.7 | 90.7 | |
MMLU Pro Academic knowledge | 70.8 | 83.7 | |
GPQA Graduate-level science | 49.2 | 82.8 | |
LiveCodeBench Competitive programming | 33.7 | 83.8 | |
AIME Competition math | 6.7 | - | - |
GPT-5 Mini significantly outperforms in coding benchmarks.
Cost vs Quality
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Devstral Medium
Other models
Context & Performance
Context Window
Devstral Medium
131,072
tokens
GPT-5 Mini
400,000
tokens
GPT-5 Mini has a 67% larger context window.
Speed Performance
| Metric | Devstral Medium | GPT-5 Mini | Winner |
|---|---|---|---|
| Tokens/second | 138.3 tok/s | 69.6 tok/s | |
| Time to First Token | 0.44s | 88.79s |
Devstral Medium responds 99% faster on average.
Capabilities
Feature Comparison
| Feature | Devstral Medium | GPT-5 Mini |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Devstral Medium | GPT-5 Mini |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Mistral AI | OpenAI |
| Released | Jul 2025 | Aug 2025 |
Devstral Medium Modalities
Input
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Output
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GPT-5 Mini Modalities
Input
textimagefile
Output
text