Compare / head-to-head
Gemma 4 31Bvsgpt-oss-20b
Gemma 4 31B leads 2 of 2 shared benchmarks. Gemma 4 31B has the larger context window (256K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
2 – 0
Gemma 4 31B leads
Cheaper per token
—
list price, input + output
Larger context
Gemma 4 31B
256K tokens
Provider uptime (30d)
100% · 94.7883%
Google · OpenAI
Gemma 4 31B
Google · released 2026-04-02
textvision
- Context
- 256K
- Max out
- —
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 6 · 5 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
2 shared · 4 only Gemma 4 31B · 3 only gpt-oss-20b| Benchmark | Gemma 4 31B | gpt-oss-20b | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| GPQA Diamond | 84.3% ↗ | 71.5% ↗ | +12.8 pt | Gemma 4 31B |
| LMArena Elo | 1441.7 ↗ | 1287.3 ↗ | +154.4 | Gemma 4 31B |
| Only Gemma 4 31B reports · 4 | ||||
| MMLU-Pro | 85.2% ↗ | not reported | — | — |
| AIME 2026 | 89.2% ↗ | not reported | — | — |
| Humanity's Last Exam (no tools) | 19.5% ↗ | not reported | — | — |
| LiveCodeBench v6 | 80% ↗ | not reported | — | — |
| Only gpt-oss-20b reports · 3 | ||||
| SWE-bench Verified | not reported | 60.7% ↗ | — | — |
| AIME 2025 | not reported | 89.2% ↗matharena ⚠ | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | not reported | 65.3% ↗epoch | — | — |
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 Gemma 4 31B 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 | Gemma 4 31B | gpt-oss-20b | Edge |
|---|---|---|---|
| Context window | 256K tokens | 131K tokens | Gemma 4 31B |
| Max output | — | 131K tokens | — |
| 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 · vision | text | Gemma 4 31B |
| Released | 2026-04-02 | 2025-08-05 | — |
| Cited benchmark scores | 6 | 6 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Gemma 4 31B vs …
Models sharing the most benchmarksMore matchups
gpt-oss-20b vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
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