Compare / head-to-head
Claude Sonnet 4.5vs
Gemini 3 Pro Preview
Gemini 3 Pro Preview leads 13 of 14 shared benchmarks. Gemini 3 Pro Preview is 1.3x cheaper per token. Gemini 3 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
1 – 13
Gemini 3 Pro Preview leads
Cheaper per token
Gemini 3 Pro Preview
1.3x cheaper, input + output
Larger context
Gemini 3 Pro Preview
1.0M tokens
Providers
2 providers
Anthropic · Google
Claude Sonnet 4.5
Anthropic · released 2025-09-29
textvision
Gemini 3 Pro Preview
Google · released 2025-11-18
textvisionaudiovideo
Quality
Benchmark matrix
14 shared · 22 only Claude Sonnet 4.5 · 10 only Gemini 3 Pro Preview| Benchmark | Claude Sonnet 4.5 | Gemini 3 Pro Preview | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 14 | ||||
| SWE-bench Verified | 77.2% ↗ | 76.2% ↗ | +1 pt | Claude Sonnet 4.5 |
| GPQA Diamond | 83.4% ↗ | 91.9% ↗ | -8.5 pt | Gemini 3 Pro Preview |
| AIME 2025 | 84.2% ↗matharena ⚠ | 95% ↗ | -10.8 pt | Gemini 3 Pro Preview |
| Humanity's Last Exam (no tools) | 17.7% ↗ | 37.5% ↗ | -19.8 pt | Gemini 3 Pro Preview |
| Chess Puzzles (Epoch AI run) | 12% ↗epoch run | 31% ↗epoch run | -19 pt | Gemini 3 Pro Preview |
| GSO Opt@1 (GSO) | 12.7% ↗ | 17.7% ↗ | -5 pt | Gemini 3 Pro Preview |
| MMMLU | 89.5% ↗ | 91.8% ↗ | -2.3 pt | Gemini 3 Pro Preview |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 77.8% ↗epoch run | 91.4% ↗epoch run | -13.6 pt | Gemini 3 Pro Preview |
| SAGE (Vals AI) | 36.1% ↗ | 47.6% ↗ | -11.5 pt | Gemini 3 Pro Preview |
| SimpleBench (SimpleBench) | 54.3% ↗ | 76.4% ↗ | -22.1 pt | Gemini 3 Pro Preview |
| SimpleQA Verified | 30.7% ↗epoch run | 72.1% ↗ | -41.4 pt | Gemini 3 Pro Preview |
| SWE-bench Verified (Epoch AI run) | 71.3% ↗epoch run | 72.9% ↗epoch run | -1.6 pt | Gemini 3 Pro Preview |
| Vending-Bench 2 (Andon Labs) | 3838.74 ↗ | 5478.16 ↗ | -1639.4 | Gemini 3 Pro Preview |
| WeirdML (Håvard Tveit Ihle) | 47.7% ↗ | 69.9% ↗ | -22.2 pt | Gemini 3 Pro Preview |
| Only Claude Sonnet 4.5 reports · 22 | ||||
| LMArena Elo | 1456.6 ↗ | not reported | — | — |
| ARC-AGI-2 (Verified) | 13.6% ↗ | not reported | — | — |
| EBR-bench (Epoch AI run) | 2.4% ↗epoch run | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 2.4% ↗epoch run | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 23.9% ↗epoch run | not reported | — | — |
| GDPval-AA | 1276 ↗ | not reported | — | — |
| Humanity's Last Exam (with tools) | 33.6% ↗ | not reported | — | — |
| LMArena WebDev (LMArena) | 1393 ↗ | not reported | — | — |
| MATH Level 5 (Epoch AI run) | 97.7% ↗epoch run | not reported | — | — |
| MCP Atlas | 43.8% ↗ | not reported | — | — |
| MMMU-Pro (no tools) | 63.4% ↗ | not reported | — | — |
| MMMU-Pro (with tools) | 68.9% ↗ | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 17% ↗epoch run | not reported | — | — |
| OSWorld-Verified | 61.4% ↗ | not reported | — | — |
| OSWorld-Verified (XLANG) | 62.9% ↗ | not reported | — | — |
| tau2-bench Airline (Sierra) | 72% ↗ | not reported | — | — |
| tau2-bench Banking Knowledge (Sierra) | 25.3% ↗ | not reported | — | — |
| Tau2-bench Retail | 86.2% ↗ | not reported | — | — |
| tau2-bench Retail (Sierra) | 72.4% ↗ | not reported | — | — |
| Tau2-bench Telecom | 98% ↗ | not reported | — | — |
| tau2-bench Telecom (Sierra) | 84.9% ↗ | not reported | — | — |
| Terminal-Bench 2.0 | 51% ↗ | not reported | — | — |
| Only Gemini 3 Pro Preview reports · 10 | ||||
| AIME 2025 (with code execution) | not reported | 100% ↗ | — | — |
| ARC-AGI-2 (ARC Prize Verified) | not reported | 31.1% ↗ | — | — |
| BALROG (BALROG) | not reported | 58.1% ↗ | — | — |
| CharXiv Reasoning | not reported | 81.4% ↗ | — | — |
| Humanity's Last Exam (with search and code execution) | not reported | 45.8% ↗ | — | — |
| MathArena Apex | not reported | 23.4% ↗ | — | — |
| MMMU-Pro | not reported | 81% ↗ | — | — |
| Terminal-Bench 2.0 (Terminus-2 agent) | not reported | 54.2% ↗ | — | — |
| Video-MMMU | not reported | 87.6% ↗ | — | — |
| τ2-bench | not reported | 85.4% ↗ | — | — |
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 Claude Sonnet 4.5 minus Gemini 3 Pro Preview 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 | Claude Sonnet 4.5 | Gemini 3 Pro Preview | Edge |
|---|---|---|---|
| Context window | 200K tokens | 1.0M tokens | Gemini 3 Pro Preview |
| Max output | 64K tokens | 66K tokens | Gemini 3 Pro Preview |
| Input price / 1M | $3 ↗ | $2 ↗ | Gemini 3 Pro Preview |
| Output price / 1M | $15 ↗ | $12 ↗ | Gemini 3 Pro Preview |
| Cached input / 1M | $0.3 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $18 | $14 | Gemini 3 Pro Preview |
| Modalities | text · vision | text · vision · audio · video | Gemini 3 Pro Preview |
| Released | 2025-09-29 | 2025-11-18 | — |
| Cited benchmark scores | 43 | 25 | — |
Reliability
Provider status
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