Claude 3.5 Sonnet vs Gemini 2.5 Pro
Wins 0 of 4 areas
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Wins 4 of 4 areas
Coding · Reasoning · Images and charts · Long documents
Gemini 2.5 Pro is the stronger all-rounder.
Scores updated · 30 tests both models report · How we compare
Where each one wins
Tests won in each of the four areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
Long documents rests on a single test.
What it costs
Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.
Gemini 2.5 Pro costs 38% less for the same work.
The biggest differences
The tests each model wins by the widest margin, up to three each. Scores are out of 100.
Where Gemini 2.5 Pro pulls ahead
- Graduate-level biology, physics and chemistry questionsGPQA Diamond+27.6points ahead
- Common-sense trick questionsSimpleBench+24.1points ahead
- Harder college exam questions with imagesMMMU-Pro+20.2points ahead
Where Claude 3.5 Sonnet pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 30 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 2.5 Pro
- SciCodeGemini 2.5 Pro by 14.731.646.3+14.7
- SWE-bench VerifiedGemini 2.5 Pro by 14.24963.2+14.2
ReasoningGemini 2.5 Pro
- GPQA DiamondGemini 2.5 Pro by 27.65683.6+27.6
- SimpleBenchGemini 2.5 Pro by 24.127.551.6+24.1
- Humanity's Last ExamGemini 2.5 Pro by 14.83.218+14.8
Images and chartsGemini 2.5 Pro
Long documentsGemini 2.5 Pro
- LongBench v2Gemini 2.5 Pro by 17.84158.8+17.8
Other results19 tests, not counted
Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.
- AIME 2025Gemini 2.5 Pro by 79.73.383+79.7
- HMMT Feb. 2025Gemini 2.5 Pro by 79.11.780.8+79.1
- AIME 2024Gemini 2.5 Pro by 761692+76
- LiveCodeBenchGemini 2.5 Pro by 41.432.874.2+41.4
- HarmBenchClaude 3.5 Sonnet by 32.798.165.4+32.7
- Aider-PolyglotGemini 2.5 Pro by 31.245.376.5+31.2
- SimpleQAGemini 2.5 Pro by 22.428.450.8+22.4
- Artificial Analysis Coding IndexGemini 2.5 Pro by 20.72646.7+20.7
- MATH-500 (EM)Gemini 2.5 Pro by 20.578.398.8+20.5
- AIR-Bench 2024Claude 3.5 Sonnet by 12.385.973.6+12.3
- MMLU-ProGemini 2.5 Pro by 8.477.686+8.4
- AA IntelligenceGemini 2.5 Pro by 7.87.215+7.8
- frontiermath_tier_4_v1Gemini 2.5 Pro by 4.204.2+4.2
- TAU-bench (airline)Gemini 2.5 Pro by 44650+4
- XSTestGemini 2.5 Pro by 3.195.698.7+3.1
- simple_safety_testsClaude 3.5 Sonnet by 310097+3
- TAU-bench (retail)Claude 3.5 Sonnet by 2.269.267+2.2
- bbqGemini 2.5 Pro by 1.594.996.4+1.5
- anthropic_red_teamtie99.899.5tie
Questions people ask
Which is better, Claude 3.5 Sonnet or Gemini 2.5 Pro?
Gemini 2.5 Pro wins all four areas where both have results: coding, reasoning, images and charts and long documents. Claude 3.5 Sonnet wins none.
Which is better for coding?
Gemini 2.5 Pro. It wins 2 of the 2 coding tests both models report; Claude 3.5 Sonnet wins none.
Which is cheaper?
Claude 3.5 Sonnet costs $3.00 per million input tokens and $15.00 per million output tokens; Gemini 2.5 Pro costs $1.25 and $10.00. That makes Gemini 2.5 Pro about 38% cheaper for the same work.
How do you compare the two?
We use the 30 benchmark tests both models have published scores on. The verdict counts the 11 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 19 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.