Claude Sonnet 4.5vsGemini 2.5-Pro
Across 24 shared benchmarks, Claude Sonnet 4.5 leads overall: Claude Sonnet 4.5 wins 14, Gemini 2.5-Pro wins 8, with 2 ties and an average score difference of +16.50.
Claude Sonnet 4.5
Anthropic · 2025-09-30 · Chat model
Gemini 2.5-Pro
Google Deep Mind · 2025-06-05 · Reasoning model
Claude Sonnet 4.514 wins(58%)Ties2(33%)8 winsGemini 2.5-Pro
Benchmark scores
Grouped by capability, sorted by largest gap within each. 24 shared benchmarks.
General Knowledge
Claude Sonnet 4.5 4/6| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| ARC-AGI | 63.7035 / 68 | 3750 / 68 | +26.70 |
| HLE | 33.6080 / 172 | 21.60112 / 172 | +12 |
| ARC-AGI-2 | 13.6038 / 62 | 4.9047 / 62 | +8.70 |
| LiveBench | 53.6983 / 115Normal (No Tools) | 58.3376 / 115Thinking High (No Tools) | -4.64 |
| GPQA Diamond | 83.4063 / 187 | 86.4045 / 187 | -3 |
| MMLU Pro | 887 / 132 | 8621 / 132 | +2 |
Math and Reasoning
Gemini 2.5-Pro 3/5| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| IMO-ProofBench | 27.108 / 16 | 55.203 / 16 | -28.10 |
| IMO-ProofBench Advanced | 4.806 / 8 | 17.604 / 8 | -12.80 |
| AIME2025 | 1001 / 107 | 8844 / 107 | +12 |
| FrontierMath | 5.2038 / 60 | 1123 / 60 | -5.80 |
| FrontierMath - Tier 4 | 2.1056 / 80Normal (No Tools) | 2.1056 / 80Normal (No Tools) | — |
Coding and Software Engineer
Claude Sonnet 4.5 2/3| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| CodeClash | 1,3891 / 8Normal (With Tools) | 1,1256 / 8Normal (With Tools) | +264 |
| SWE-bench Verified | 828 / 112 | 67.2072 / 112 | +14.80 |
| LiveCodeBench | 7148 / 123 | 77.1034 / 123 | -6.10 |
Agent Level Benchmark
Claude Sonnet 4.5 2/2| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| τ²-Bench - Telecom | 985 / 35 | 5432 / 35 | +44 |
| Terminal Bench Hard | 338 / 13 | 2512 / 13 | +8 |
AI Agent - Tool Usage
Claude Sonnet 4.5 2/2| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| Terminal-Bench | 503 / 35 | 25.3028 / 35 | +24.70 |
| Terminal Bench 2.0 | 42.8042 / 47 | 32.6047 / 47 | +10.20 |
AI Agent - Information Search
Claude Sonnet 4.5 1/1| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| BrowseComp | 24.1051 / 53 | 7.8052 / 53 | +16.30 |
Commonsense Reasoning
Gemini 2.5-Pro 1/1| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| Simple Bench | 54.3022 / 63Normal (No Tools) | 62.4011 / 63Thinking (No Tools) | -8.10 |
Instruction Following
Claude Sonnet 4.5 1/1| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| IF Bench | 57.3022 / 30 | 4929 / 30 | +8.30 |
Long Context
Even 1/1| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| AA-LCR | 6610 / 15 | 6610 / 15 | — |
Multimodal Understanding
Gemini 2.5-Pro 1/1| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| MMMU | 77.8015 / 29 | 8210 / 29 | -4.20 |
Productivity Knowledge
Claude Sonnet 4.5 1/1| Benchmark | Claude Sonnet 4.5 | Gemini 2.5-Pro | Diff |
|---|---|---|---|
| GDPval-AA | 3916 / 21 | 2221 / 21 | +17 |
Specs
| Field | Claude Sonnet 4.5 | Gemini 2.5-Pro |
|---|---|---|
| Publisher | Anthropic | Google Deep Mind |
| Release date | 2025-09-30 | 2025-06-05 |
| Model type | Chat model | Reasoning model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 1000K | 1000K |
| Max output | 64K | 64K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | Claude Sonnet 4.5 | Gemini 2.5-Pro |
|---|---|---|
| Text input | $3 / 1M tokens | $1.25 / 1M tokens |
| Text output | $15 / 1M tokens | $10 / 1M tokens |
| Cache read | $0.3 / 1M tokens | Not public |
| Cache write | $3.75 / 1M tokens | Not public |
Summary
- Claude Sonnet 4.5leads in:General Knowledge (4/6), Coding and Software Engineer (2/3), Agent Level Benchmark (2/2), AI Agent - Tool Usage (2/2), AI Agent - Information Search (1/1), Instruction Following (1/1), Productivity Knowledge (1/1)
- Gemini 2.5-Proleads in:Math and Reasoning (3/5), Commonsense Reasoning (1/1), Multimodal Understanding (1/1)
- Tied in:Long Context
On average across the 24 shared benchmarks, Claude Sonnet 4.5 scores 16.50 higher.
Largest single-benchmark gap: CodeClash — Claude Sonnet 4.5 1,389 vs Gemini 2.5-Pro 1,125 (+264).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.