Claude 3.5 Sonnet vs Gemini 3 Pro
Wins 0 of 4 areas
—
Wins 4 of 4 areas
Coding · Reasoning · Images and charts · Long documents
Gemini 3 Pro is the stronger all-rounder.
Scores updated · 27 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 3 Pro costs 22% 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 3 Pro pulls ahead
- Recent programming contest problemsLiveCodeBench v6+50.2points ahead
- Common-sense trick questionsSimpleBench+48.9points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+36.5points ahead
Where Claude 3.5 Sonnet pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 27 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 3 Pro
- LiveCodeBench v6Gemini 3 Pro by 50.237.287.4+50.2
- SWE-bench VerifiedGemini 3 Pro by 25.450.876.2+25.4
- SciCodeGemini 3 Pro by 24.531.656.1+24.5
ReasoningGemini 3 Pro
- SimpleBenchGemini 3 Pro by 48.927.576.4+48.9
- Humanity's Last ExamGemini 3 Pro by 36.53.239.7+36.5
- GPQA DiamondGemini 3 Pro by 34.85690.8+34.8
Images and chartsGemini 3 Pro
Other results17 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 3 Pro by 96.73.3100+96.7
- HMMT Feb. 2025Gemini 3 Pro by 95.81.797.5+95.8
- LiveCodeBenchGemini 3 Pro by 59.232.892+59.2
- SimpleQAGemini 3 Pro by 43.728.472.1+43.7
- metr_hcastGemini 3 Pro by 30.640.771.3+30.6
- metr_re_benchGemini 3 Pro by 30535+30
- HarmBenchClaude 3.5 Sonnet by 25.698.172.5+25.6
- AA IntelligenceGemini 3 Pro by 20.87.228+20.8
- Artificial Analysis Coding IndexGemini 3 Pro by 20.52646.5+20.5
- frontiermath_tier_4_v1Gemini 3 Pro by 18.8018.8+18.8
- AIR-Bench 2024Claude 3.5 Sonnet by 12.785.973.2+12.7
- MMLU-ProGemini 3 Pro by 12.577.690.1+12.5
- bbqGemini 3 Pro by 3.594.998.4+3.5
- anthropic_red_teamClaude 3.5 Sonnet by 2.799.897+2.7
- simple_safety_testsClaude 3.5 Sonnet by 2.510097.5+2.5
- XSTestGemini 3 Pro by 1.795.697.3+1.7
- metr_swaatie98.799.5tie
Questions people ask
Which is better, Claude 3.5 Sonnet or Gemini 3 Pro?
Gemini 3 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 3 Pro. It wins 3 of the 3 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 3 Pro costs $2.00 and $12.00. That makes Gemini 3 Pro about 22% cheaper for the same work.
How do you compare the two?
We use the 27 benchmark tests both models have published scores on. The verdict counts the 10 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 17 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.