Claude 3.5 SonnetvsGemini 2.5 Pro
Claude 3.5 Sonnet | 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. | 45%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. | 33.4% | 59.6%Best |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 59.4% | 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 | Jun 20 2024 | Mar 25 2025 |
| Access | Proprietary | Proprietary |
Which is better: Claude 3.5 Sonnet or Gemini 2.5 Pro?
Gemini 2.5 Pro leads Claude 3.5 Sonnet on 2 of the 3 benchmarks they both report (BullshitBench v2, SWE-Bench Verified, GPQA Diamond). Claude 3.5 Sonnet shipped 278 days before Gemini 2.5 Pro, 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 3.5 Sonnet leads at 45% vs Gemini 2.5 Pro at 20%. On SWE-Bench Verified, Gemini 2.5 Pro leads at 59.6% vs Claude 3.5 Sonnet at 33.4%. On GPQA Diamond, Gemini 2.5 Pro leads at 86.4% vs Claude 3.5 Sonnet at 59.4%.
Frequently asked questions
Claude 3.5 Sonnet was released by Anthropic on Jun 20 2024.
Gemini 2.5 Pro was released by Google on Mar 25 2025.
Gemini 2.5 Pro leads on SWE-Bench Verified — Claude 3.5 Sonnet 33.4% vs Gemini 2.5 Pro 59.6%.
Gemini 2.5 Pro leads on GPQA Diamond — Claude 3.5 Sonnet 59.4% vs Gemini 2.5 Pro 86.4%.