GPT-5.5 vs Qwen3.6 Plus
Wins 8 of 8 areas
Coding · Agents · Reasoning · Facts · Images and charts · Math · Long documents · Following instructions
Wins 0 of 8 areas
—
GPT-5.5 is the stronger all-rounder.Qwen3.6 Plus is cheaper.
Scores updated · 47 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 software70GPT-5.57 of 7 tests
- AgentsCarrying out multi-step tasks on its own40GPT-5.54 of 4 tests
- ReasoningHard problems that need careful thinking40GPT-5.54 of 4 tests
- MathCompetition and research-level math40GPT-5.54 of 4 tests
- FactsGetting facts right instead of making them up21GPT-5.52 of 3 tests
- Following instructionsDoing exactly what it is asked10GPT-5.51 of 2 tests · 1 tie
- Images and chartsUnderstanding pictures, charts and video10GPT-5.51 of 1 test
- Long documentsFinding answers in very long texts10GPT-5.51 of 1 test
Images and charts and long documents 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.
Qwen3.6 Plus costs 90% 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
- Unpublished advanced math problemsFrontierMath Tiers 1-3 (v2)+47points ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+31.6points ahead
- Research-level physics problemsCritPt+24.2points ahead
Where Qwen3.6 Plus pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+54.4points ahead
Every test, side by side
All 47 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 22.984.361.4+22.9
- Terminal-Bench HardGPT-5.5 by 16.760.643.9+16.7
- SciCodeGPT-5.5 by 15.155.840.7+15.1
- LiveBench · Agentic CodingGPT-5.5 by 12.65441.4+12.6
- LMArena · WebDevGPT-5.5 by 51 rating points15121461+51 rating
- LiveBench · CodingGPT-5.5 by 482.278.2+4
- SWE-bench ProGPT-5.5 by 258.656.6+2
AgentsGPT-5.5
- τ-Bench V3 · BankingGPT-5.5 by 18.23920.8+18.2
- GDPValGPT-5.5 by 1842.724.7+18
- OSWorld-VerifiedGPT-5.5 by 16.278.762.5+16.2
- MCP AtlasGPT-5.5 by 1.275.374.1+1.2
ReasoningGPT-5.5
- CritPtGPT-5.5 by 24.227.12.9+24.2
- Humanity's Last ExamGPT-5.5 by 1845.827.8+18
- LiveBench · ReasoningGPT-5.5 by 13.989.775.8+13.9
- GPQA DiamondGPT-5.5 by 5.393.588.2+5.3
FactsGPT-5.5
- AA-Omniscience · Non-hallucinationQwen3.6 Plus by 54.41165.4+54.4
- AA-Omniscience · AccuracyGPT-5.5 by 31.65826.4+31.6
- SimpleQA VerifiedGPT-5.5 by 18.96344.1+18.9
MathGPT-5.5
- FrontierMath Tiers 1-3 (v2)GPT-5.5 by 4785.338.3+47
- LiveBench · MathematicsGPT-5.5 by 12.295.983.7+12.2
- HMMT Feb. 2026GPT-5.5 by 10.798.587.8+10.7
- AIME 2026GPT-5.5 by 4.710095.3+4.7
Following instructionsGPT-5.5
- LiveBench · Instruction FollowingGPT-5.5 by 12.470.758.3+12.4
- IFBenchtie75.975.2tie
Other results21 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.
- frontiermath_tier_4_v1GPT-5.5 by 27.135.48.3+27.1
- Terminal-Bench 2.0GPT-5.5 by 21.182.761.6+21.1
- Artificial Analysis Coding IndexGPT-5.5 by 20.474.954.5+20.4
- AA-OmniscienceGPT-5.5 by 19.620.50.9+19.6
- Tool-DecathlonGPT-5.5 by 15.855.639.8+15.8
- ToolathlonGPT-5.5 by 15.855.639.8+15.8
- NL2RepoGPT-5.5 by 12.850.737.9+12.8
- livebench_languageGPT-5.5 by 12.487.475+12.4
- DynaMathQwen3.6 Plus by 12.175.988+12.1
- livebench_data_analysisGPT-5.5 by 11.781.669.9+11.7
- AA IntelligenceGPT-5.5 by 11.438.427+11.4
- Finance Agent v2GPT-5.5 by 10.951.840.9+10.9
- LiveBenchGPT-5.5 by 9.880.770.8+9.8
- SimpleVQAQwen3.6 Plus by 8.758.667.3+8.7
- AA Agentic IndexGPT-5.5 by 8.337.329+8.3
- τ²-Bench Telecom (AA run)Qwen3.6 Plus by 3.893.997.7+3.8
- RealWorldQAQwen3.6 Plus by 3.282.285.4+3.2
- HMMT Nov. 2025GPT-5.5 by 1.996.594.6+1.9
- HLE (with tools)GPT-5.5 by 1.652.250.6+1.6
- ERQAQwen3.6 Plus by 1.264.565.7+1.2
- SuperGPQAGPT-5.5 by 1.172.771.6+1.1
Questions people ask
Which is better, GPT-5.5 or Qwen3.6 Plus?
GPT-5.5 wins all eight areas we test: coding, agents, reasoning, facts, images and charts, math, long documents and following instructions. Qwen3.6 Plus wins none, but costs 90% less.
Which is better for coding?
GPT-5.5. It wins 7 of the 7 coding tests both models report; Qwen3.6 Plus wins none.
Which is cheaper?
GPT-5.5 costs $5.00 per million input tokens and $30.00 per million output tokens; Qwen3.6 Plus costs $0.50 and $3.00. That makes Qwen3.6 Plus about 90% cheaper for the same work.
How do you compare the two?
We use the 47 benchmark tests both models have published scores on. The verdict counts the 26 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 21 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.