Key Takeaways
Mistral Small 3 wins:
- Cheaper output tokens
GPT-OSS-120b wins:
- Cheaper input tokens
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
Price Advantage
Mistral Small 3
Benchmark Advantage
GPT-OSS-120b
Context Window
GPT-OSS-120b
Speed
GPT-OSS-120b
Pricing Comparison
Price Comparison
| Metric | Mistral Small 3 | GPT-OSS-120b | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.05 | $0.04 | GPT-OSS-120b |
| Output (per 1M tokens) | $0.08 | $0.19 | Mistral Small 3 |
Using a 3:1 input/output ratio, Mistral Small 3 is 25% cheaper overall.
Mistral Small 3 Providers
DeepInfra $0.05 (Cheapest)
Together $0.10
GPT-OSS-120b Providers
Chutes $0.04 (Cheapest)
SiliconFlow $0.05
Novita $0.05
NCompass $0.05
Clarifai $0.09
Benchmark Comparison
8
Benchmarks Compared
0
Mistral Small 3 Wins
5
GPT-OSS-120b Wins
Benchmark Scores
| Benchmark | Mistral Small 3 | GPT-OSS-120b | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 12.7 | 33.3 | |
Coding Index Code generation & understanding | - | 28.6 | - |
Math Index Mathematical reasoning | 4.3 | 93.4 | |
MMLU Pro Academic knowledge | 65.2 | 80.8 | |
GPQA Graduate-level science | 46.2 | 78.2 | |
LiveCodeBench Competitive programming | 25.2 | 87.8 | |
Aider Real-world code editing | - | 41.8 | - |
AIME Competition math | 8.0 | - | - |
GPT-OSS-120b significantly outperforms in coding benchmarks.
Cost vs Quality
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Mistral Small 3
Other models
Context & Performance
Context Window
Mistral Small 3
32,768
tokens
Max output: 16,384 tokens
GPT-OSS-120b
131,072
tokens
GPT-OSS-120b has a 75% larger context window.
Speed Performance
| Metric | Mistral Small 3 | GPT-OSS-120b | Winner |
|---|---|---|---|
| Tokens/second | 241.0 tok/s | 301.3 tok/s | |
| Time to First Token | 0.36s | 0.51s |
GPT-OSS-120b responds 25% faster on average.
Capabilities
Feature Comparison
| Feature | Mistral Small 3 | GPT-OSS-120b |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Mistral Small 3 | GPT-OSS-120b |
|---|---|---|
| License | Open Source | Open Source |
| Author | Mistral AI | OpenAI |
| Released | Jan 2025 | Aug 2025 |
Mistral Small 3 Modalities
Input
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Output
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GPT-OSS-120b Modalities
Input
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Output
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