Claude 3.7 Sonnet vs Gemini 2.5 Flash
Wins 3 of 7 areas
Coding · Agents · Facts
Wins 4 of 7 areas
Reasoning · Images and charts · Long documents · Following instructions
Gemini 2.5 Flash wins more areas, narrowly.Claude 3.7 Sonnet is better at coding.
Scores updated · 30 tests both models report · How we compare
Where each one wins
Tests won in each of the seven 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.
- Images and chartsUnderstanding pictures, charts and video03Gemini 2.5 Flash3 of 3 tests
- ReasoningHard problems that need careful thinking12Gemini 2.5 Flash2 of 4 tests · 1 tie
- Long documentsFinding answers in very long texts01Gemini 2.5 Flash1 of 1 test
- Following instructionsDoing exactly what it is asked01Gemini 2.5 Flash1 of 1 test
- CodingWriting and fixing software30Claude 3.7 Sonnet3 of 3 tests
- FactsGetting facts right instead of making them up20Claude 3.7 Sonnet2 of 2 tests
- AgentsCarrying out multi-step tasks on its own10Claude 3.7 Sonnet1 of 1 test
Agents, long documents and following instructions rest on a single test each.
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 Flash costs 84% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Gemini 2.5 Flash pulls ahead
Where Claude 3.7 Sonnet pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+35.3points ahead
- Real work tasks from 44 professionsGDPVal+17.5points ahead
- Code for real scientific research problemsSciCode+11.2points ahead
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.
CodingClaude 3.7 Sonnet
- SciCodeClaude 3.7 Sonnet by 11.240.329.1+11.2
- SWE-bench VerifiedClaude 3.7 Sonnet by 9.970.360.4+9.9
- Terminal-Bench HardClaude 3.7 Sonnet by 7.621.213.6+7.6
ReasoningGemini 2.5 Flash
- SimpleBenchClaude 3.7 Sonnet by 5.246.441.2+5.2
- Humanity's Last ExamGemini 2.5 Flash by 2.49.712.1+2.4
- GPQA DiamondGemini 2.5 Flash by 1.877.279+1.8
- CritPttie0.91.1tie
FactsClaude 3.7 Sonnet
- AA-Omniscience · Non-hallucinationClaude 3.7 Sonnet by 35.36024.7+35.3
- AA-Omniscience · AccuracyClaude 3.7 Sonnet by 22825.9+2
Images and chartsGemini 2.5 Flash
- MMMU-ProGemini 2.5 Flash by 960.169.1+9
- LMArena · VisionGemini 2.5 Flash by 66 rating points11691235+66 rating
- MMMUGemini 2.5 Flash by 4.77579.7+4.7
Long documentsGemini 2.5 Flash
- AA-LCRGemini 2.5 Flash by 13.651.765.3+13.6
Following instructionsGemini 2.5 Flash
- IFBenchGemini 2.5 Flash by 248.350.3+2
Other results15 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.
- HMMT Feb. 2025Gemini 2.5 Flash by 32.531.764.2+32.5
- AA-OmniscienceClaude 3.7 Sonnet by 29.1-0.7-29.8+29.1
- τ²-Bench Telecom (AA run)Claude 3.7 Sonnet by 23.154.731.6+23.1
- HarmBenchClaude 3.7 Sonnet by 21.784.362.6+21.7
- AA Agentic IndexClaude 3.7 Sonnet by 18.23718.8+18.2
- AIME 2025Gemini 2.5 Flash by 17.254.872+17.2
- Artificial Analysis Coding IndexClaude 3.7 Sonnet by 14.236.422.2+14.2
- AIR-Bench 2024Claude 3.7 Sonnet by 13.181.868.7+13.1
- bbqGemini 2.5 Flash by 5.692.197.7+5.6
- AA IntelligenceClaude 3.7 Sonnet by 4.617.713.1+4.6
- ARC-AGI-1Gemini 2.5 Flash by 3.728.632.3+3.7
- XSTestGemini 2.5 Flash by 2.496.498.8+2.4
- simple_safety_testsClaude 3.7 Sonnet by 210098+2
- Aider-PolyglotGemini 2.5 Flash by 1.560.461.9+1.5
- anthropic_red_teamtie99.798.8tie
Questions people ask
Which is better, Claude 3.7 Sonnet or Gemini 2.5 Flash?
Gemini 2.5 Flash wins four of the seven areas where both have results: reasoning, images and charts, long documents and following instructions. Claude 3.7 Sonnet wins coding, agents and facts.
Which is better for coding?
Claude 3.7 Sonnet. It wins 3 of the 3 coding tests both models report; Gemini 2.5 Flash wins none.
Which is cheaper?
Claude 3.7 Sonnet costs $3.00 per million input tokens and $15.00 per million output tokens; Gemini 2.5 Flash costs $0.30 and $2.50. That makes Gemini 2.5 Flash about 84% 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 15 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 15 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.