Compare / head-to-head
DeepSeek V3vsgpt-oss-20b
gpt-oss-20b leads 4 of 5 shared benchmarks. gpt-oss-20b has the larger context window (131K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 4
gpt-oss-20b leads
Cheaper per token
—
list price, input + output
Larger context
gpt-oss-20b
131K tokens
Provider uptime (30d)
100% · 95.4802%
DeepSeek · OpenAI
DeepSeek V3
DeepSeek · released 2024-12-26
text
- Context
- 128K
- Max out
- 8K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 8 · 7 core
gpt-oss-20b
OpenAI · released 2025-08-05
text
- Context
- 131K
- Max out
- 131K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 6 · 5 core
Quality
Benchmark matrix
5 shared · 2 only DeepSeek V3 · 0 only gpt-oss-20b| Benchmark | DeepSeek V3 | gpt-oss-20b | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 5 | ||||
| SWE-bench Verified | 42% ↗ | 60.7% ↗ | -18.7 pt | gpt-oss-20b |
| GPQA Diamond | 59.1% ↗ | 71.5% ↗ | -12.4 pt | gpt-oss-20b |
| AIME 2025 | 25% ↗matharena | 89.2% ↗matharena ⚠ | -64.2 pt | gpt-oss-20b |
| LMArena Elo | 1332.4 ↗ | 1287.3 ↗ | +45.1 | DeepSeek V3 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 15.8% ↗epoch | 65.3% ↗epoch | -49.5 pt | gpt-oss-20b |
| Only DeepSeek V3 reports · 2 | ||||
| MMLU | 88.5% ↗ | not reported | — | — |
| MMLU-Pro | 75.9% ↗ | not reported | — | — |
| Only gpt-oss-20b reports · 0 | ||||
| gpt-oss-20b reports nothing DeepSeek V3 does not. | ||||
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is DeepSeek V3 minus gpt-oss-20b in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | DeepSeek V3 | gpt-oss-20b | Edge |
|---|---|---|---|
| Context window | 128K tokens | 131K tokens | gpt-oss-20b |
| Max output | 8K tokens | 131K tokens | gpt-oss-20b |
| Input price / 1M | — | — | — |
| Output price / 1M | — | — | — |
| Cached input / 1M | — | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | — | — |
| Modalities | text | text | Tie |
| Released | 2024-12-26 | 2025-08-05 | — |
| Cited benchmark scores | 8 | 6 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
DeepSeek V3 vs …
Models sharing the most benchmarksMore matchups
gpt-oss-20b vs …
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Which one wins on your data?
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