Claude Sonnet 4vsGemini 2.5 Pro
Claude Sonnet 4 | Gemini 2.5 Pro | |
|---|---|---|
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 30%Best | 20% |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 72.7%Best | 59.6% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 75.4% | 86.4%Best |
Multimodal MMMUTests the AI on understanding images and text together across many college subjects. Higher is better. | — | 68% |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | — | 1224 |
| Overview | ||
| Company | Anthropic | |
| Release date | May 22 2025 | Mar 25 2025 |
| Access | Proprietary | Proprietary |
Which is better: Claude Sonnet 4 or Gemini 2.5 Pro?
Claude Sonnet 4 leads Gemini 2.5 Pro on 2 of the 3 benchmarks they both report (BullshitBench v2, SWE-Bench Verified, GPQA Diamond). Gemini 2.5 Pro shipped 58 days before Claude Sonnet 4, 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.
On BullshitBench v2, Claude Sonnet 4 leads at 30% vs Gemini 2.5 Pro at 20%. On SWE-Bench Verified, Claude Sonnet 4 leads at 72.7% vs Gemini 2.5 Pro at 59.6%. On GPQA Diamond, Gemini 2.5 Pro leads at 86.4% vs Claude Sonnet 4 at 75.4%.
Frequently asked questions
Claude Sonnet 4 was released by Anthropic on May 22 2025.
Gemini 2.5 Pro was released by Google on Mar 25 2025.
Claude Sonnet 4 leads on SWE-Bench Verified — Claude Sonnet 4 72.7% vs Gemini 2.5 Pro 59.6%.
Gemini 2.5 Pro leads on GPQA Diamond — Claude Sonnet 4 75.4% vs Gemini 2.5 Pro 86.4%.