Key Takeaways
Devstral Medium wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
GPT-5.2 Pro wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Better at math
- Supports vision
Price Advantage
Devstral Medium
Benchmark Advantage
GPT-5.2 Pro
Context Window
GPT-5.2 Pro
Speed
Devstral Medium
Pricing Comparison
Price Comparison
| Metric | Devstral Medium | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.40 | $21.00 | Devstral Medium |
| Output (per 1M tokens) | $2.00 | $168.00 | Devstral Medium |
Using a 3:1 input/output ratio, Devstral Medium is 99% cheaper overall.
Devstral Medium Providers
Mistral $0.40 (Cheapest)
GPT-5.2 Pro Providers
OpenAI $21.00 (Cheapest)
Benchmark Comparison
7
Benchmarks Compared
0
Devstral Medium Wins
6
GPT-5.2 Pro Wins
Benchmark Scores
| Benchmark | Devstral Medium | GPT-5.2 Pro | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 18.6 | 51.2 | |
Coding Index Code generation & understanding | 15.9 | 48.7 | |
Math Index Mathematical reasoning | 4.7 | 99.0 | |
MMLU Pro Academic knowledge | 70.8 | 87.4 | |
GPQA Graduate-level science | 49.2 | 90.3 | |
LiveCodeBench Competitive programming | 33.7 | 88.9 | |
AIME Competition math | 6.7 | - | - |
GPT-5.2 Pro 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-5.2 Pro
400,000
tokens
Max output: 128,000 tokens
GPT-5.2 Pro has a 67% larger context window.
Speed Performance
| Metric | Devstral Medium | GPT-5.2 Pro | Winner |
|---|---|---|---|
| Tokens/second | 112.6 tok/s | 98.3 tok/s | |
| Time to First Token | 0.44s | 46.57s |
Devstral Medium responds 15% faster on average.
Capabilities
Feature Comparison
| Feature | Devstral Medium | GPT-5.2 Pro |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Devstral Medium | GPT-5.2 Pro |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Mistral AI | OpenAI |
| Released | Jul 2025 | Dec 2025 |
Devstral Medium Modalities
Input
text
Output
text
GPT-5.2 Pro Modalities
Input
imagetextfile
Output
text