GPT-5.5 vs MiniMax M3
Wins 6 of 8 areas
Coding · Agents · Reasoning · Images and charts · Math · Long documents
Wins 0 of 8 areas
—
GPT-5.5 is the stronger all-rounder.MiniMax M3 is cheaper.
Scores updated · 44 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.
- CodingWriting and fixing software60GPT-5.56 of 7 tests · 1 tie
- AgentsCarrying out multi-step tasks on its own60GPT-5.56 of 7 tests · 1 tie
- ReasoningHard problems that need careful thinking40GPT-5.54 of 5 tests · 1 tie
- Images and chartsUnderstanding pictures, charts and video20GPT-5.52 of 2 tests
- MathCompetition and research-level math20GPT-5.52 of 2 tests
- Long documentsFinding answers in very long texts10GPT-5.51 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
- Following instructionsDoing exactly what it is asked11Even1 each
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.
MiniMax M3 costs 96% 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-5.5 pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+41.3points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+23.7points ahead
- Research-level physics problemsCritPt+23.4points ahead
Where MiniMax M3 pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+70.6points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+7points ahead
Every test, side by side
All 44 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5.5
- Terminal-Bench 2.1GPT-5.5 by 19.184.365.2+19.1
- Terminal-Bench HardGPT-5.5 by 18.260.642.4+18.2
- LiveBench · CodingGPT-5.5 by 1482.268.2+14
- LiveBench · Agentic CodingGPT-5.5 by 13.35440.7+13.3
- SciCodeGPT-5.5 by 8.755.847.1+8.7
- LMArena · WebDevGPT-5.5 by 30 rating points15121482+30 rating
- SWE-bench Protie58.659tie
AgentsGPT-5.5
- τ-Bench V3 · BankingGPT-5.5 by 23.73915.3+23.7
- Terminal-Bench 4.0GPT-5.5 by 12.614.62+12.6
- AA ApexAgentsGPT-5.5 by 1037.727.7+10
- OSWorld-VerifiedGPT-5.5 by 8.678.770.1+8.6
- GDPValGPT-5.5 by 5.442.737.3+5.4
- MCP AtlasGPT-5.5 by 1.175.374.2+1.1
- BrowseComptie84.483.5tie
ReasoningGPT-5.5
- CritPtGPT-5.5 by 23.427.13.7+23.4
- SimpleBenchGPT-5.5 by 23.26945.8+23.2
- LiveBench · ReasoningGPT-5.5 by 15.289.774.5+15.2
- Humanity's Last ExamGPT-5.5 by 6.845.839+6.8
- GPQA Diamondtie93.592.9tie
FactsEven
- AA-Omniscience · Non-hallucinationMiniMax M3 by 70.61181.6+70.6
- AA-Omniscience · AccuracyGPT-5.5 by 41.35816.7+41.3
Images and chartsGPT-5.5
- LMArena · VisionGPT-5.5 by 38 rating points12921254+38 rating
- MMMU-ProGPT-5.5 by 1.379.978.6+1.3
MathGPT-5.5
- LiveBench · MathematicsGPT-5.5 by 18.995.977+18.9
- HMMT Feb. 2026GPT-5.5 by 14.198.584.4+14.1
Following instructionsEven
- LiveBench · Instruction FollowingGPT-5.5 by 13.270.757.5+13.2
- IFBenchMiniMax M3 by 775.982.9+7
Other results16 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.
- DeepSWEGPT-5.5 by 507020+50
- AA-OmniscienceGPT-5.5 by 19.120.51.4+19.1
- Artificial Analysis Coding IndexGPT-5.5 by 16.374.958.6+16.3
- HMMT Nov. 2025GPT-5.5 by 12.196.584.4+12.1
- GDPval-AA v2GPT-5.5 by 118 rating points15091391+118 rating
- LiveBenchGPT-5.5 by 10.780.770+10.7
- livebench_languageGPT-5.5 by 10.687.476.8+10.6
- AA IntelligenceGPT-5.5 by 9.238.429.2+9.2
- OfficeQA ProGPT-5.5 by 954.145.1+9
- PostTrainBenchMiniMax M3 by 8.728.437.1+8.7
- NL2RepoGPT-5.5 by 8.650.742.1+8.6
- AA Agentic IndexGPT-5.5 by 6.537.330.8+6.5
- livebench_data_analysisGPT-5.5 by 5.481.676.2+5.4
- τ²-Bench Telecom (AA run)GPT-5.5 by 593.988.9+5
- Finance Agent v2GPT-5.5 by 3.551.848.3+3.5
- Tool-DecathlonGPT-5.5 by 2.855.652.8+2.8
Questions people ask
Which is better, GPT-5.5 or MiniMax M3?
GPT-5.5 wins six of the eight areas we test: coding, agents, reasoning, images and charts, math and long documents. MiniMax M3 wins none, but costs 96% less. They are level on facts and following instructions.
Which is better for coding?
GPT-5.5. It wins 6 of the 7 coding tests both models report; MiniMax M3 wins none, and 1 is a tie.
Which is cheaper?
GPT-5.5 costs $5.00 per million input tokens and $30.00 per million output tokens; MiniMax M3 costs $0.30 and $1.20. That makes MiniMax M3 about 96% cheaper for the same work.
How do you compare the two?
We use the 44 benchmark tests both models have published scores on. The verdict counts the 28 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 16 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.