3 vs 0 benchmarks won
Anthropic Claude Sonnet 4.5 | Google Gemini 2.5 Flash Image | |
|---|---|---|
| Overview | ||
| Company | Anthropic | |
| Release date | Sep 29 2025 | Aug 26 2025 |
| Model type | — | — |
| Open source | No | No |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
Science reasoning GPQA Diamond | 83.4% | — |
Software engineering SWE-Bench Verified | 77.2% | — |
Multimodal understanding MMMU | 68% | — |
| Timeline | ||
| Release gap | Gemini 2.5 Flash Image shipped 34 days before Claude Sonnet 4.5 | |
Claude Sonnet 4.5 leads Gemini 2.5 Flash Image on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 2.5 Flash Image shipped 34 days before Claude Sonnet 4.5, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.