Compare / head-to-head
Gemini 2.5 Provso3
o3 leads 4 of 6 shared benchmarks. o3 is 1.1x cheaper per token. Gemini 2.5 Pro has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
2 – 4
o3 leads
Cheaper per token
o3
1.1x cheaper, input + output
Larger context
Gemini 2.5 Pro
1.0M tokens
Provider uptime (30d)
100% · 94.4251%
Google · OpenAI
Gemini 2.5 Pro
Google · released 2025-06-17
textvisionaudio
Quality
Benchmark matrix
6 shared · 6 only Gemini 2.5 Pro · 1 only o3| Benchmark | Gemini 2.5 Pro | o3 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 6 | ||||
| SWE-bench Verified | 59.6% ↗ | 69.1% ↗ | -9.5 pt | o3 |
| GPQA Diamond | 86.4% ↗ | 81.8% ↗epoch | +4.6 pt | Gemini 2.5 Pro |
| AIME 2025 | 88% ↗ | 89.2% ↗matharena ⚠ | -1.2 pt | o3 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 24.6% ↗epoch | 33.3% ↗epoch | -8.7 pt | o3 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 84.7% ↗epoch | 84.4% ↗epoch | +0.3 pt | Gemini 2.5 Pro |
| SWE-bench Verified (Epoch AI run) | 57.6% ↗epoch | 62.3% ↗epoch | -4.7 pt | o3 |
| Only Gemini 2.5 Pro reports · 6 | ||||
| Humanity's Last Exam (no tools) | 21.6% ↗ | not reported | — | — |
| LMArena Elo | 1457.8 ↗ | not reported | — | — |
| Aider Polyglot | 82.2% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 0% ↗epoch | not reported | — | — |
| LiveCodeBench | 74.2% ↗ | not reported | — | — |
| MMMU | 82% ↗ | not reported | — | — |
| Only o3 reports · 1 | ||||
| SimpleQA Verified | not reported | 49.4% ↗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 Gemini 2.5 Pro minus o3 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 2.5 Pro | o3 | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 200K tokens | Gemini 2.5 Pro |
| Max output | 66K tokens | 100K tokens | o3 |
| Input price / 1M | $1.25 ↗ | $2 ↗ | Gemini 2.5 Pro |
| Output price / 1M | $10 ↗ | $8 ↗ | o3 |
| Cached input / 1M | $0.125 ↗ | $0.5 ↗ | Gemini 2.5 Pro |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $11.25 | $10 | o3 |
| Modalities | text · vision · audio | text · vision | Gemini 2.5 Pro |
| Released | 2025-06-17 | 2025-04-16 | — |
| Cited benchmark scores | 14 | 7 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Gemini 2.5 Pro vs …
Models sharing the most benchmarksMore matchups
o3 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Gemini 2.5 Pro and o3 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.