Compare / head-to-head
Gemini 3.1 Pro Previewvsgpt-oss-120b
Gemini 3.1 Pro Preview leads 3 of 3 shared benchmarks. Gemini 3.1 Pro Preview has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
3 – 0
Gemini 3.1 Pro Preview leads
Cheaper per token
—
list price, input + output
Larger context
Gemini 3.1 Pro Preview
1.0M tokens
Provider uptime (30d)
100% · 94.4828%
Google · OpenAI
Gemini 3.1 Pro Preview
Google · released 2026-02-19
textvisionaudio
gpt-oss-120b
OpenAI · released 2025-08-05
text
- Context
- 131K
- Max out
- 131K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 6 · 5 core
Quality
Benchmark matrix
3 shared · 6 only Gemini 3.1 Pro Preview · 2 only gpt-oss-120b| Benchmark | Gemini 3.1 Pro Preview | gpt-oss-120b | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| GPQA Diamond | 94.3% ↗ | 80.1% ↗ | +14.2 pt | Gemini 3.1 Pro Preview |
| LMArena Elo | 1480.1 ↗ | 1365.9 ↗ | +114.2 | Gemini 3.1 Pro Preview |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 95.6% ↗epoch | 88.9% ↗epoch | +6.7 pt | Gemini 3.1 Pro Preview |
| Only Gemini 3.1 Pro Preview reports · 6 | ||||
| AIME 2026 | 98.3% ↗matharena ⚠ | not reported | — | — |
| ARC-AGI-2 | 77.1% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 26.8% ↗epoch | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 59.6% ↗epoch | not reported | — | — |
| SimpleQA Verified | 73.5% ↗epoch | not reported | — | — |
| SWE-Bench Pro | 54.2% ↗ | not reported | — | — |
| Only gpt-oss-120b reports · 2 | ||||
| SWE-bench Verified | not reported | 62.4% ↗ | — | — |
| AIME 2025 | not reported | 90% ↗matharena ⚠ | — | — |
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 Gemini 3.1 Pro Preview minus gpt-oss-120b 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 | Gemini 3.1 Pro Preview | gpt-oss-120b | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 131K tokens | Gemini 3.1 Pro Preview |
| Max output | 66K tokens | 131K tokens | gpt-oss-120b |
| Input price / 1M | $2 ↗ | — | — |
| Output price / 1M | $12 ↗ | — | — |
| Cached input / 1M | $0.2 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $14 | — | — |
| Modalities | text · vision · audio | text | Gemini 3.1 Pro Preview |
| Released | 2026-02-19 | 2025-08-05 | — |
| Cited benchmark scores | 10 | 6 | — |
Reliability
Provider status
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gpt-oss-120b vs …
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Which one wins on your data?
Public benchmarks are a starting point. Run Gemini 3.1 Pro Preview and gpt-oss-120b on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.