Compare / head-to-head
Gemini 3 Flash PreviewvsGPT-5 Pro
GPT-5 Pro leads 2 of 3 shared benchmarks. Gemini 3 Flash 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
1 – 2
GPT-5 Pro leads
Cheaper per token
—
list price, input + output
Larger context
Gemini 3 Flash Preview
1.0M tokens
Provider uptime (30d)
100% · 94.7712%
Google · OpenAI
Gemini 3 Flash Preview
Google · released 2025-12-17
textvisionaudio
- Context
- 1.0M
- Max out
- 66K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 13 · 9 core
Quality
Benchmark matrix
3 shared · 8 only Gemini 3 Flash Preview · 0 only GPT-5 Pro| Benchmark | Gemini 3 Flash Preview | GPT-5 Pro | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| GPQA Diamond | 90.4% ↗ | 88.4% ↗ | +2 pt | Gemini 3 Flash Preview |
| FrontierMath Tier 4 v2 (Epoch AI run) | 17.1% ↗epoch | 19.5% ↗epoch | -2.4 pt | GPT-5 Pro |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 51.2% ↗epoch | 55.8% ↗epoch | -4.6 pt | GPT-5 Pro |
| Only Gemini 3 Flash Preview reports · 8 | ||||
| SWE-bench Verified | 78% ↗ | not reported | — | — |
| AIME 2025 | 95.2% ↗ | not reported | — | — |
| Humanity's Last Exam (no tools) | 33.7% ↗ | not reported | — | — |
| MMMU-Pro | 81.2% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 95.6% ↗epoch | not reported | — | — |
| SimpleQA Verified | 68.7% ↗ | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 75.4% ↗epoch | not reported | — | — |
| Terminal-Bench 2.0 | 47.6% ↗ | not reported | — | — |
| Only GPT-5 Pro reports · 0 | ||||
| GPT-5 Pro reports nothing Gemini 3 Flash Preview 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 Gemini 3 Flash Preview minus GPT-5 Pro 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 Flash Preview | GPT-5 Pro | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 400K tokens | Gemini 3 Flash Preview |
| Max output | 66K tokens | 272K tokens | GPT-5 Pro |
| Input price / 1M | — | $15 ↗ | — |
| Output price / 1M | — | $120 ↗ | — |
| Cached input / 1M | — | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | — | $135 | — |
| Modalities | text · vision · audio | text · vision | Gemini 3 Flash Preview |
| Released | 2025-12-17 | 2025-10-06 | — |
| Cited benchmark scores | 13 | 3 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
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