GPT-5.2 vs GPT-6.1 Sol
Wins 0 of 8 areas
—
Wins 7 of 8 areas
Coding · Agents · Reasoning · Facts · Images and charts · Math · Following instructions
GPT-6.1 Sol is the stronger all-rounder.
Scores updated · 29 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 thinking05GPT-6.1 Sol5 of 5 tests
- CodingWriting and fixing software04GPT-6.1 Sol4 of 4 tests
- FactsGetting facts right instead of making them up03GPT-6.1 Sol3 of 3 tests
- MathCompetition and research-level math03GPT-6.1 Sol3 of 3 tests
- AgentsCarrying out multi-step tasks on its own02GPT-6.1 Sol2 of 2 tests
- Images and chartsUnderstanding pictures, charts and video02GPT-6.1 Sol2 of 2 tests
- Following instructionsDoing exactly what it is asked01GPT-6.1 Sol1 of 1 test
- Long documentsFinding answers in very long texts00Even0 each · 1 tie
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.
GPT-6.1 Sol costs 24% 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 GPT-6.1 Sol pulls ahead
- Extremely hard research-level math problemsFrontierMath Tier 4+68.3points ahead
- Abstract visual puzzles that people can solveARC-AGI-2+41.3points ahead
- Common-sense trick questionsSimpleBench+37.1points ahead
Where GPT-5.2 pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 29 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-6.1 Sol
- LMArena · WebDevGPT-6.1 Sol by 332 rating points14171749+332 rating
- LiveBench · Agentic CodingGPT-6.1 Sol by 4.350.354.5+4.3
- LiveBench · CodingGPT-6.1 Sol by 4.376.180.4+4.3
- SciCodeGPT-6.1 Sol by 2.152.154.2+2.1
AgentsGPT-6.1 Sol
- AA ApexAgentsGPT-6.1 Sol by 372360+37
- GDPValGPT-6.1 Sol by 6.448.354.7+6.4
ReasoningGPT-6.1 Sol
- ARC-AGI-2GPT-6.1 Sol by 41.352.994.2+41.3
- SimpleBenchGPT-6.1 Sol by 37.145.882.9+37.1
- CritPtGPT-6.1 Sol by 20.111.631.7+20.1
- Humanity's Last ExamGPT-6.1 Sol by 15.237.752.9+15.2
- LiveBench · ReasoningGPT-6.1 Sol by 9.483.292.6+9.4
FactsGPT-6.1 Sol
- SimpleQA VerifiedGPT-6.1 Sol by 36.837.173.9+36.8
- AA-Omniscience · Non-hallucinationGPT-6.1 Sol by 26.918.845.7+26.9
- AA-Omniscience · AccuracyGPT-6.1 Sol by 17.844.362.1+17.8
Images and chartsGPT-6.1 Sol
- MMMU-ProGPT-6.1 Sol by 11.474.686+11.4
- LMArena · VisionGPT-6.1 Sol by 42 rating points12461288+42 rating
MathGPT-6.1 Sol
- FrontierMath Tier 4GPT-6.1 Sol by 68.331.7100+68.3
- FrontierMath Tiers 1-3 (v2)GPT-6.1 Sol by 26.367.493.7+26.3
- LiveBench · MathematicsGPT-6.1 Sol by 3.693.296.8+3.6
Following instructionsGPT-6.1 Sol
- LiveBench · Instruction FollowingGPT-6.1 Sol by 12.461.874.2+12.4
Other results8 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.
- AA-OmniscienceGPT-6.1 Sol by 42.4-0.941.5+42.4
- AA IntelligenceGPT-6.1 Sol by 21.430.451.8+21.4
- HealthBench Professional length-adjustedGPT-6.1 Sol by 18.345.964.2+18.3
- ARC-AGI-1GPT-6.1 Sol by 10.386.296.5+10.3
- livebench_languageGPT-6.1 Sol by 10.379.890.1+10.3
- livebench_data_analysisGPT-6.1 Sol by 4.578.282.7+4.5
- HealthBench Hard length-adjustedGPT-6.1 Sol by 1.934.336.2+1.9
- HealthBench Consensus length-adjustedGPT-6.1 Sol by 1.694.496+1.6
Questions people ask
Which is better, GPT-5.2 or GPT-6.1 Sol?
GPT-6.1 Sol wins seven of the eight areas we test: coding, agents, reasoning, facts, images and charts, math and following instructions. GPT-5.2 wins none. They are level on long documents.
Which is better for coding?
GPT-6.1 Sol. It wins 4 of the 4 coding tests both models report; GPT-5.2 wins none.
Which is cheaper?
GPT-5.2 costs $1.75 per million input tokens and $14.00 per million output tokens; GPT-6.1 Sol costs $2.00 and $10.00. That makes GPT-6.1 Sol about 24% cheaper for the same work.
How do you compare the two?
We use the 29 benchmark tests both models have published scores on. The verdict counts the 21 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 8 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.