GPT-5.5 vs Qwen3.8 2.4T A95B
Wins 3 of 5 areas
Coding · Reasoning · Long documents
Wins 1 of 5 areas
Agents
GPT-5.5 is the stronger all-rounder.Qwen3.8 2.4T A95B is cheaper and better at agents.
Scores updated · 16 tests both models report · How we compare
Where each one wins
Tests won in each of the five areas where both have results. 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 thinking30GPT-5.53 of 4 tests · 1 tie
- CodingWriting and fixing software20GPT-5.52 of 2 tests
- Long documentsFinding answers in very long texts10GPT-5.51 of 1 test
- AgentsCarrying out multi-step tasks on its own12Qwen3.8 2.4T A95B2 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.
Qwen3.8 2.4T A95B costs 77% 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
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+26.7points ahead
- Research-level physics problemsCritPt+7.1points ahead
- Common-sense trick questionsSimpleBench+6.5points ahead
Where Qwen3.8 2.4T A95B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+49.8points ahead
- Real work tasks from 44 professionsGDPVal+12.9points ahead
- Customer-service tasks in a simulated bankτ-Bench V3 · Banking+10.1points ahead
Every test, side by side
All 16 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 2.384.382+2.3
- SciCodeGPT-5.5 by 1.755.854.1+1.7
AgentsQwen3.8 2.4T A95B
- GDPValQwen3.8 2.4T A95B by 12.942.755.6+12.9
- τ-Bench V3 · BankingQwen3.8 2.4T A95B by 10.13949.1+10.1
- Terminal-Bench 4.0GPT-5.5 by 3.514.611.1+3.5
ReasoningGPT-5.5
- CritPtGPT-5.5 by 7.127.120+7.1
- SimpleBenchGPT-5.5 by 6.56962.5+6.5
- Humanity's Last ExamGPT-5.5 by 3.445.842.4+3.4
- GPQA Diamondtie93.593.5tie
FactsEven
- AA-Omniscience · Non-hallucinationQwen3.8 2.4T A95B by 49.81160.8+49.8
- AA-Omniscience · AccuracyGPT-5.5 by 26.75831.3+26.7
Other results4 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-5.5 by 16.220.54.3+16.2
- AA Agentic IndexQwen3.8 2.4T A95B by 13.137.350.4+13.1
- Artificial Analysis Coding IndexGPT-5.5 by 374.971.9+3
- AA IntelligenceQwen3.8 2.4T A95B by 1.538.439.9+1.5
Questions people ask
Which is better, GPT-5.5 or Qwen3.8 2.4T A95B?
GPT-5.5 wins three of the five areas where both have results: coding, reasoning and long documents. Qwen3.8 2.4T A95B wins agents, and costs 77% less. They are level on facts.
Which is better for coding?
GPT-5.5. It wins 2 of the 2 coding tests both models report; Qwen3.8 2.4T A95B wins none.
Which is cheaper?
GPT-5.5 costs $5.00 per million input tokens and $30.00 per million output tokens; Qwen3.8 2.4T A95B costs $2.00 and $6.00. That makes Qwen3.8 2.4T A95B about 77% cheaper for the same work.
How do you compare the two?
We use the 16 benchmark tests both models have published scores on. The verdict counts the 12 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 4 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.