DeepSeek: DeepSeek V3.1 Terminus (exacto) vs OpenAI: gpt-oss-20b (free)
Side-by-side comparison of DeepSeek: DeepSeek V3.1 Terminus (exacto) and OpenAI: gpt-oss-20b (free). Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidenceOpenAI: gpt-oss-20b (free) leads overall
OpenAI: gpt-oss-20b (free) leads in price and max output, making it the stronger choice for most workflows. DeepSeek: DeepSeek V3.1 Terminus (exacto) remains competitive with advantages in context window.
Best for with DeepSeek: DeepSeek V3.1 Terminus (exacto)
Best for with OpenAI: gpt-oss-20b (free)
Side-by-side
Technical specifications
| DeepSeek: DeepSeek V3.1 Terminus (exacto) | OpenAI: gpt-oss-20b (free) | |
|---|---|---|
| Provider | DeepSeek | OpenAI |
| Input price | $0.21/M | $0.00/M |
| Output price | $0.79/M | $0.00/M |
| Context window | 164K | 131K |
| Max output | N/A | 131K |
| Capabilities | Tool useReasoning | Tool useReasoning |
| Released | Sep 22, 2025 | Aug 5, 2025 |
Scoring breakdown
How each dimension compares
Price
OpenAI: gpt-oss-20b (free) leadsDeepSeek: DeepSeek V3.1 Terminus (exacto)
$0.79/M tokens
OpenAI: gpt-oss-20b (free)
$0.00/M tokens
Context Window
DeepSeek: DeepSeek V3.1 Terminus (exacto) leadsDeepSeek: DeepSeek V3.1 Terminus (exacto)
164K tokens
OpenAI: gpt-oss-20b (free)
131K tokens
Capabilities
DeepSeek: DeepSeek V3.1 Terminus (exacto)
2/4
OpenAI: gpt-oss-20b (free)
2/4
Max Output
OpenAI: gpt-oss-20b (free) leadsDeepSeek: DeepSeek V3.1 Terminus (exacto)
N/A
OpenAI: gpt-oss-20b (free)
131K tokens
Recency
DeepSeek: DeepSeek V3.1 Terminus (exacto)
Sep 2025
OpenAI: gpt-oss-20b (free)
Aug 2025
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