Key Takeaways
DeepSeek V3.1 wins:
- Higher intelligence benchmark
- Better at coding
- Supports tool calls
GPT-OSS-20b wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Faster response time
- Better at math
Price Advantage
GPT-OSS-20b
Benchmark Advantage
DeepSeek V3.1
Context Window
GPT-OSS-20b
Speed
GPT-OSS-20b
Pricing Comparison
Price Comparison
| Metric | DeepSeek V3.1 | GPT-OSS-20b | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.15 | $0.03 | GPT-OSS-20b |
| Output (per 1M tokens) | $0.75 | $0.14 | GPT-OSS-20b |
Using a 3:1 input/output ratio, GPT-OSS-20b is 81% cheaper overall.
DeepSeek V3.1 Providers
Chutes $0.20 (Cheapest)
DeepInfra $0.21
SiliconFlow $0.27
Novita $0.27
AtlasCloud $0.30
GPT-OSS-20b Providers
DeepInfra $0.03 (Cheapest)
Parasail $0.04
Novita $0.04
NCompass $0.04
Clarifai $0.04
Benchmark Comparison
6
Benchmarks Compared
4
DeepSeek V3.1 Wins
2
GPT-OSS-20b Wins
Benchmark Scores
| Benchmark | DeepSeek V3.1 | GPT-OSS-20b | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 28.1 | 24.5 | |
Coding Index Code generation & understanding | 28.4 | 18.5 | |
Math Index Mathematical reasoning | 49.7 | 89.3 | |
MMLU Pro Academic knowledge | 83.3 | 74.8 | |
GPQA Graduate-level science | 73.5 | 68.8 | |
LiveCodeBench Competitive programming | 57.7 | 77.7 |
DeepSeek V3.1 significantly outperforms in coding benchmarks.
Cost vs Quality
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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-20b
131,072
tokens
GPT-OSS-20b has a 75% larger context window.
Speed Performance
| Metric | DeepSeek V3.1 | GPT-OSS-20b | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 293.3 tok/s | |
| Time to First Token | 0.00s | 0.51s |
GPT-OSS-20b responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | DeepSeek V3.1 | GPT-OSS-20b |
|---|---|---|
| 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-20b |
|---|---|---|
| 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-20b Modalities
Input
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Output
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