Key Takeaways
Devstral 2 2512 wins:
- Cheaper input tokens
- Cheaper output tokens
- Better at math
GPT-5.4 wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Supports vision
Price Advantage
Devstral 2 2512
Benchmark Advantage
GPT-5.4
Context Window
GPT-5.4
Speed
GPT-5.4
Pricing Comparison
Price Comparison
| Metric | Devstral 2 2512 | GPT-5.4 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.40 | $2.50 | Devstral 2 2512 |
| Output (per 1M tokens) | $0.90 | $15.00 | Devstral 2 2512 |
| Cache Read (per 1M) | $0.45 | $0.25 | GPT-5.4 |
Using a 3:1 input/output ratio, Devstral 2 2512 is 91% cheaper overall.
Devstral 2 2512 Providers
No provider data available
GPT-5.4 Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
0
Devstral 2 2512 Wins
3
GPT-5.4 Wins
Benchmark Scores
| Benchmark | Devstral 2 2512 | GPT-5.4 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 22.0 | 57.0 | |
Coding Index Code generation & understanding | 23.7 | 57.3 | |
Math Index Mathematical reasoning | 36.7 | - | - |
MMLU Pro Academic knowledge | 76.2 | - | - |
GPQA Graduate-level science | 59.4 | 92.0 | |
LiveCodeBench Competitive programming | 44.8 | - | - |
GPT-5.4 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
GPT-5.4
1,050,000
tokens
GPT-5.4 has a 75% larger context window.
Speed Performance
| Metric | Devstral 2 2512 | GPT-5.4 | Winner |
|---|---|---|---|
| Tokens/second | 81.2 tok/s | 84.0 tok/s | |
| Time to First Token | 0.39s | 165.19s |
Capabilities
Feature Comparison
| Feature | Devstral 2 2512 | GPT-5.4 |
|---|---|---|
| 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-5.4 |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Mistral AI | OpenAI |
| Released | Dec 2025 | Mar 2026 |
Devstral 2 2512 Modalities
Input
text
Output
text
GPT-5.4 Modalities
Input
textimagefile
Output
text