DeepSeek V3.1 Terminus vs gpt-oss-20b
Price, context window & benchmark comparison
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Verdict: gpt-oss-20b is 12.6× cheaper than DeepSeek V3.1 Terminus on a typical 3:1 input/output mix. DeepSeek V3.1 Terminus scores higher on the Artificial Analysis Intelligence Index (14.8 vs 9). DeepSeek V3.1 Terminus has the larger context window (164K vs 131K).
| DeepSeek V3.1 Terminus | gpt-oss-20b | |
|---|---|---|
| Input price / 1M | $0.27 | $0.018 |
| Output price / 1M | $1.00 | $0.09 |
| Blended price (3:1) | $0.45 | $0.036 |
| Cached input / 1M | $0.14 | — |
| Context window | 164K | 131K |
| Max output | 33K | 33K |
| Intelligence index | 14.8 | 9 |
| Coding index | 43.5 | 20.7 |
| Providers | — | — |
| Best provider uptime (30m) | — | — |
| Vision input | No | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2025-09-22 | 2025-08-05 |
| Retirement | 2026-09-28 | — |
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FAQ
Which is cheaper, DeepSeek V3.1 Terminus or gpt-oss-20b?
gpt-oss-20b is 12.6× cheaper than DeepSeek V3.1 Terminus on a typical 3:1 input/output mix.
DeepSeek V3.1 Terminus vs gpt-oss-20b: which has a bigger context window?
DeepSeek V3.1 Terminus: 163,840 tokens. gpt-oss-20b: 131,072 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: DeepSeek V3.1 Terminus ≈ $1,040, gpt-oss-20b ≈ $81.00.
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