GPT-5.5 vs Qwen3.6 27B
Wins 6 of 8 areas
Coding · Agents · Reasoning · Math · Long documents · Following instructions
Wins 1 of 8 areas
Images and charts
GPT-5.5 is the stronger all-rounder.Qwen3.6 27B is cheaper and better at images and charts.
Scores updated · 43 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 6 tests
- ReasoningHard problems that need careful thinking40GPT-5.54 of 4 tests
- MathCompetition and research-level math40GPT-5.54 of 4 tests
- AgentsCarrying out multi-step tasks on its own30GPT-5.53 of 3 tests
- Following instructionsDoing exactly what it is asked20GPT-5.52 of 2 tests
- Long documentsFinding answers in very long texts10GPT-5.51 of 1 test
- Images and chartsUnderstanding pictures, charts and video12Qwen3.6 27B2 of 3 tests
- FactsGetting facts right instead of making them up11Even1 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.
Qwen3.6 27B costs 88% less for the same work.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where GPT-5.5 pulls ahead
- Unpublished advanced math problemsFrontierMath Tiers 1-3 (v2)+50.2points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+38.4points ahead
- Research-level physics problemsCritPt+26points ahead
Where Qwen3.6 27B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+39.7points ahead
- Reads and reasons about text in imagesOCRBenchv2+7.2points ahead
- Math problems shown in pictures and chartsMathVista+3.2points ahead
Every test, side by side
All 43 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5.5
- Terminal-Bench HardGPT-5.5 by 25.860.634.8+25.8
- Terminal-Bench 2.1GPT-5.5 by 23.684.360.7+23.6
- LiveBench · Agentic CodingGPT-5.5 by 14.75439.3+14.7
- SciCodeGPT-5.5 by 1355.842.8+13
- LiveBench · CodingGPT-5.5 by 10.482.271.8+10.4
- SWE-bench ProGPT-5.5 by 5.158.653.5+5.1
AgentsGPT-5.5
- τ-Bench V3 · BankingGPT-5.5 by 22.33916.7+22.3
- GDPValGPT-5.5 by 18.342.724.4+18.3
- Terminal-Bench 4.0GPT-5.5 by 14.614.60+14.6
ReasoningGPT-5.5
- CritPtGPT-5.5 by 2627.11.1+26
- Humanity's Last ExamGPT-5.5 by 22.745.823.1+22.7
- LiveBench · ReasoningGPT-5.5 by 19.489.770.3+19.4
- GPQA DiamondGPT-5.5 by 9.393.584.2+9.3
FactsEven
- AA-Omniscience · Non-hallucinationQwen3.6 27B by 39.71150.7+39.7
- AA-Omniscience · AccuracyGPT-5.5 by 38.45819.6+38.4
Images and chartsQwen3.6 27B
- OCRBenchv2Qwen3.6 27B by 7.261.168.3+7.2
- MMMU-ProGPT-5.5 by 5.379.974.6+5.3
- MathVistaQwen3.6 27B by 3.284.287.4+3.2
MathGPT-5.5
- FrontierMath Tiers 1-3 (v2)GPT-5.5 by 50.285.335.1+50.2
- LiveBench · MathematicsGPT-5.5 by 1695.979.9+16
- HMMT Feb. 2026GPT-5.5 by 14.298.584.3+14.2
- AIME 2026GPT-5.5 by 5.910094.1+5.9
Following instructionsGPT-5.5
- LiveBench · Instruction FollowingGPT-5.5 by 17.570.753.2+17.5
- IFBenchGPT-5.5 by 8.375.967.6+8.3
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.
- DeepSWE 1.1GPT-5.5 by 53.76713.3+53.7
- AA-OmniscienceGPT-5.5 by 40.520.5-20+40.5
- livebench_languageGPT-5.5 by 24.187.463.3+24.1
- Terminal-Bench 2.0GPT-5.5 by 23.482.759.3+23.4
- Artificial Analysis Coding IndexGPT-5.5 by 21.274.953.7+21.2
- AA Agentic IndexGPT-5.5 by 17.237.320.1+17.2
- AA IntelligenceGPT-5.5 by 1738.421.4+17
- JobBenchGPT-5.5 by 16.538.321.8+16.5
- NL2RepoGPT-5.5 by 14.550.736.2+14.5
- livebench_data_analysisGPT-5.5 by 11.281.670.4+11.2
- DynaMathQwen3.6 27B by 9.775.985.6+9.7
- SuperGPQAGPT-5.5 by 6.772.766+6.7
- HMMT Nov. 2025GPT-5.5 by 5.896.590.7+5.8
- EmbSpatial-BenchQwen3.6 27B by 2.781.984.6+2.7
- SimpleVQAGPT-5.5 by 2.558.656.1+2.5
- ERQAGPT-5.5 by 264.562.5+2
- RealWorldQAQwen3.6 27B by 1.982.284.1+1.9
- τ²-Bench Telecom (AA run)tie93.994.2tie
Questions people ask
Which is better, GPT-5.5 or Qwen3.6 27B?
GPT-5.5 wins six of the eight areas we test: coding, agents, reasoning, math, long documents and following instructions. Qwen3.6 27B wins images and charts, and costs 88% less. They are level on facts.
Which is better for coding?
GPT-5.5. It wins 6 of the 6 coding tests both models report; Qwen3.6 27B wins none.
Which is cheaper?
GPT-5.5 costs $5.00 per million input tokens and $30.00 per million output tokens; Qwen3.6 27B costs $0.60 and $3.60. That makes Qwen3.6 27B about 88% cheaper for the same work.
How do you compare the two?
We use the 43 benchmark tests both models have published scores on. The verdict counts the 25 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.