Data points: 82
The readout for Claude Sonnet 4.5 and Gemini 2.5 Pro, before the detailed comparison sheet.
Decision read
Tie
Tie currently has the stronger profile, with verified wins split 3 to 3.
Evidence depth
82 data points
Includes 8 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Tie
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare Claude Sonnet 4.5 vs Gemini 2.5 Proclaude-sonnet-4-5-vs-gemini-2-5-pro | Model A Claude Sonnet 4.5 | Model B Gemini 2.5 Pro |
|---|---|---|
| Overall leader | Tie | Tie |
| Verified metric wins | 3 wins | 3 wins |
| Where it leads | Cheapest input price, First-token latency, Free providers | Average speed, Provider coverage, Recent tests |
| Model metadata | Claude Sonnet 4.5 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | Gemini 2.5 Pro exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input. |
| Developer | Anthropic | |
| Context window | 1M tokens | 1.0M tokens |
| Max output | 64K tokens | 65.5K tokens |
| Released | Sep 2025 | Jun 2025 |
| Modalities | Input TextImageFile Output Text | Input TextImageFileAudiovideo Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | Claude | Gemini |
| Knowledge cutoff | 2025-01-31 | 2025-01-31 |
| OpenRouter ID | anthropic/claude-sonnet-4.5 | google/gemini-2.5-pro |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Sonnet 4.5 | Gemini 2.5 Pro |
|---|---|---|
| MMLU-Pro | 86.0%#13 | 86.2%#12 |
| LiveCodeBench | 59.0%#44 | 80.1%#18 |
| Time to first answer token | 1.29 s#29 | 21.28 s#73 |
| Input price | $3.00/M#39 | $1.25/M#30 |
| SciCode | 42.8%#32 | 42.8%#32 |
| GPQA | 72.7%#75 | 84.4%#36 |
| HLE | 7.1%#77 | 21.1%#37 |
| Output speed | 53.1 tok/s#88 | 134.3 tok/s#38 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Sonnet 4.5 | Gemini 2.5 Pro |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Sonnet 4.5 | Gemini 2.5 Pro |
|---|---|---|
CatClaw API45 tests | Claude Sonnet 4.5 speed / latency 46 tok/s / 5111ms input / output No data | Gemini 2.5 Pro speed / latency 48 tok/s / 23637ms input / output No data |
YUNWU API10 tests | Claude Sonnet 4.5 speed / latency 41 tok/s / 3271ms input / output No data | Gemini 2.5 Pro speed / latency N/A / N/A input / output No data |
天宫造物10 tests | Claude Sonnet 4.5 speed / latency 45 tok/s / 3170ms input / output No data | Gemini 2.5 Pro speed / latency N/A / N/A input / output No data |
Completions5 tests | Claude Sonnet 4.5 speed / latency 21 tok/s / 1085ms input / output No data | Gemini 2.5 Pro speed / latency N/A / N/A input / output No data |
DeepRouter5 tests | Claude Sonnet 4.5 speed / latency N/A / N/A input / output No data | Gemini 2.5 Pro speed / latency 92 tok/s / 16347ms input / output No data |
Claude Sonnet 4.5 claude-sonnet-4.5 speed / latency No data input / output $0/M / $0/M | Gemini 2.5 Pro gemini-2.5-pro speed / latency No data input / output $1.13/M / $9.00/M | |
Claude Sonnet 4.5 c/claude-sonnet-4-5-20250929 speed / latency No data input / output $0.0004/M / $0.0004/M | Gemini 2.5 Pro gemini-2.5-pro speed / latency No data input / output $2.50/M / $20.00/M | |
Claude Sonnet 4.5 claude-sonnet-4-5-20250929 speed / latency No data input / output $0.041/M / $0.205/M | Gemini 2.5 Pro gemini-2.5-pro speed / latency No data input / output $0.034/M / $0.274/M | |
Claude Sonnet 4.5 claude-sonnet-4-5-20250929 speed / latency No data input / output $0.123/M / $0.616/M | Gemini 2.5 Pro gemini-2.5-pro speed / latency No data input / output $0.051/M / $0.411/M | |
Claude Sonnet 4.5 claude-sonnet-4-5-20250929-c speed / latency No data input / output $0.080/M / $0.080/M | Gemini 2.5 Pro z/gemini-2.5-pro speed / latency No data input / output $0.750/M / $6.00/M |
This report only uses LMSpeed data for Claude Sonnet 4.5 and Gemini 2.5 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Sonnet 4.5 | Gemini 2.5 Pro |
|---|---|---|
| When to choose each model | Claude Sonnet 4.5 Claude Sonnet 4.5 is stronger when you prioritize Cheapest input price, First-token latency, Free providers. | Gemini 2.5 Pro Gemini 2.5 Pro is stronger when you prioritize Average speed, Provider coverage, Recent tests. |
TL;DR: Tie leads across 82 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Sonnet 4.5 vs Gemini 2.5 Pro into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
