Key Takeaways
DeepSeek V3.1 wins:
- Supports tool calls
GPT-OSS-120b wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Better at math
Price Advantage
GPT-OSS-120b
Benchmark Advantage
GPT-OSS-120b
Context Window
GPT-OSS-120b
Speed
GPT-OSS-120b
Pricing Comparison
Price Comparison
| Metric | DeepSeek V3.1 | GPT-OSS-120b | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.15 | $0.04 | GPT-OSS-120b |
| Output (per 1M tokens) | $0.75 | $0.19 | GPT-OSS-120b |
Using a 3:1 input/output ratio, GPT-OSS-120b is 74% cheaper overall.
DeepSeek V3.1 Providers
Chutes $0.20 (Cheapest)
DeepInfra $0.21
SiliconFlow $0.27
Novita $0.27
AtlasCloud $0.30
GPT-OSS-120b Providers
Chutes $0.04 (Cheapest)
SiliconFlow $0.05
Novita $0.05
NCompass $0.05
Clarifai $0.09
Benchmark Comparison
7
Benchmarks Compared
1
DeepSeek V3.1 Wins
4
GPT-OSS-120b Wins
Benchmark Scores
| Benchmark | DeepSeek V3.1 | GPT-OSS-120b | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 28.1 | 33.3 | |
Coding Index Code generation & understanding | 28.4 | 28.6 | - |
Math Index Mathematical reasoning | 49.7 | 93.4 | |
MMLU Pro Academic knowledge | 83.3 | 80.8 | |
GPQA Graduate-level science | 73.5 | 78.2 | |
LiveCodeBench Competitive programming | 57.7 | 87.8 | |
Aider Real-world code editing | - | 41.8 | - |
GPT-OSS-120b shows stronger mathematical reasoning abilities.
Cost vs Quality
X-axis:
Y-axis:
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DeepSeek V3.1
Other models
Context & Performance
Context Window
DeepSeek V3.1
32,768
tokens
Max output: 7,168 tokens
GPT-OSS-120b
131,072
tokens
GPT-OSS-120b has a 75% larger context window.
Speed Performance
| Metric | DeepSeek V3.1 | GPT-OSS-120b | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 301.3 tok/s | |
| Time to First Token | 0.00s | 0.51s |
GPT-OSS-120b responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | DeepSeek V3.1 | GPT-OSS-120b |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | DeepSeek V3.1 | GPT-OSS-120b |
|---|---|---|
| License | Open Source | Open Source |
| Author | Deepseek | OpenAI |
| Released | Aug 2025 | Aug 2025 |
DeepSeek V3.1 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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