Gemini 2.5 Pro vs o1
Wins 6 of 8 areas
Coding · Reasoning · Facts · Images and charts · Math · Long documents
Wins 2 of 8 areas
Agents · Following instructions
Gemini 2.5 Pro is the stronger all-rounder.o1 is better at agents.
Scores updated · 35 tests both models report · How we compare
Where each one wins
Tests won in each of the eight areas we test. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.
- ReasoningHard problems that need careful thinking40Gemini 2.5 Pro4 of 4 tests
- CodingWriting and fixing software30Gemini 2.5 Pro3 of 3 tests
- Images and chartsUnderstanding pictures, charts and video30Gemini 2.5 Pro3 of 3 tests
- FactsGetting facts right instead of making them up21Gemini 2.5 Pro2 of 3 tests
- MathCompetition and research-level math10Gemini 2.5 Pro1 of 1 test
- Long documentsFinding answers in very long texts10Gemini 2.5 Pro1 of 1 test
- AgentsCarrying out multi-step tasks on its own01o11 of 1 test
- Following instructionsDoing exactly what it is asked01o11 of 1 test
Agents, math, 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 Pro costs 85% 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
- Fixes real GitHub issues in Python projectsSWE-bench Verified+21.9points ahead
- Short factual questions, answered correctlySimpleQA Verified+14.9points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+13.6points ahead
Where o1 pulls ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+21.6points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+21.3points ahead
Every test, side by side
All 35 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGemini 2.5 Pro
- SWE-bench VerifiedGemini 2.5 Pro by 21.963.241.3+21.9
- Terminal-Bench HardGemini 2.5 Pro by 13.626.512.9+13.6
- SciCodeGemini 2.5 Pro by 10.546.335.8+10.5
ReasoningGemini 2.5 Pro
- SimpleBenchGemini 2.5 Pro by 11.551.640.1+11.5
- Humanity's Last ExamGemini 2.5 Pro by 11187+11
- GPQA DiamondGemini 2.5 Pro by 8.983.674.7+8.9
- CritPtGemini 2.5 Pro by 2.32.60.3+2.3
FactsGemini 2.5 Pro
- AA-Omniscience · Non-hallucinationo1 by 21.39.130.4+21.3
- SimpleQA VerifiedGemini 2.5 Pro by 14.95641.1+14.9
- AA-Omniscience · AccuracyGemini 2.5 Pro by 4.63934.5+4.6
Images and chartsGemini 2.5 Pro
- MathVistaGemini 2.5 Pro by 12.183.971.8+12.1
- LMArena · VisionGemini 2.5 Pro by 95 rating points12631168+95 rating
- MMMUGemini 2.5 Pro by 279.677.6+2
Other results18 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.
- HarmBencho1 by 30.965.496.3+30.9
- AA Agentic Indexo1 by 27.63.531.1+27.6
- Aider-PolyglotGemini 2.5 Pro by 14.876.561.7+14.8
- AIME 2024Gemini 2.5 Pro by 12.89279.2+12.8
- τ²-Bench Telecom (AA run)o1 by 8.554.162.6+8.5
- SimpleQAGemini 2.5 Pro by 8.450.842.4+8.4
- Artificial Analysis Coding IndexGemini 2.5 Pro by 746.739.7+7
- AIR-Bench 2024o1 by 6.473.680+6.4
- AA-Omniscienceo1 by 5.3-16.4-11.1+5.3
- TAU-bench (retail)o1 by 3.86770.8+3.8
- MATH-500 (EM)Gemini 2.5 Pro by 2.498.896.4+2.4
- simple_safety_testso1 by 29799+2
- XSTestGemini 2.5 Pro by 1.798.797+1.7
- AIME 2025Gemini 2.5 Pro by 1.38381.7+1.3
- anthropic_red_teamGemini 2.5 Pro by 1.299.598.3+1.2
- bbqtie96.497.3tie
- AA Intelligencetie1515.2tie
- TAU-bench (airline)tie5050tie
Questions people ask
Which is better, Gemini 2.5 Pro or o1?
Gemini 2.5 Pro wins six of the eight areas we test: coding, reasoning, facts, images and charts, math and long documents. o1 wins agents and following instructions.
Which is better for coding?
Gemini 2.5 Pro. It wins 3 of the 3 coding tests both models report; o1 wins none.
Which is cheaper?
Gemini 2.5 Pro costs $1.25 per million input tokens and $10.00 per million output tokens; o1 costs $15.00 and $60.00. That makes Gemini 2.5 Pro about 85% cheaper for the same work.
How do you compare the two?
We use the 35 benchmark tests both models have published scores on. The verdict counts the 17 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 18 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.