GPT-5.6 Sol vs Qwen2.5 Instruct 72B
Wins 4 of 5 areas
Coding · Reasoning · Long documents · Following instructions
Wins 0 of 5 areas
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GPT-5.6 Sol is the stronger all-rounder.Qwen2.5 Instruct 72B is cheaper.
Scores updated · 13 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-5.6 Sol3 of 3 tests
- CodingWriting and fixing software20GPT-5.6 Sol2 of 2 tests
- Long documentsFinding answers in very long texts10GPT-5.6 Sol1 of 1 test
- Following instructionsDoing exactly what it is asked10GPT-5.6 Sol1 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
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.
Qwen2.5 Instruct 72B 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-5.6 Sol pulls ahead
- Reasons across sets of long documentsAA-LCR+64points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+61.4points ahead
- Very hard expert questions across many subjectsHumanity's Last Exam+45.9points ahead
Where Qwen2.5 Instruct 72B pulls ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+6.7points ahead
Every test, side by side
All 13 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingGPT-5.6 Sol
- Terminal-Bench HardGPT-5.6 Sol by 61.465.94.5+61.4
- SciCodeGPT-5.6 Sol by 30.457.126.7+30.4
ReasoningGPT-5.6 Sol
- Humanity's Last ExamGPT-5.6 Sol by 45.949.53.6+45.9
- GPQA DiamondGPT-5.6 Sol by 4594.149.1+45
- CritPtGPT-5.6 Sol by 32.332.30+32.3
FactsEven
- AA-Omniscience · AccuracyGPT-5.6 Sol by 41.959.417.5+41.9
- AA-Omniscience · Non-hallucinationQwen2.5 Instruct 72B by 6.77.814.5+6.7
Following instructionsGPT-5.6 Sol
- IFBenchGPT-5.6 Sol by 35.872.736.9+35.8
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-5.6 Sol by 75.122-53.1+75.1
- Artificial Analysis Coding IndexGPT-5.6 Sol by 65.577.411.9+65.5
- τ²-Bench Telecom (AA run)GPT-5.6 Sol by 50.685.134.5+50.6
- AA IntelligenceGPT-5.6 Sol by 39.3477.7+39.3
Questions people ask
Which is better, GPT-5.6 Sol or Qwen2.5 Instruct 72B?
GPT-5.6 Sol wins four of the five areas where both have results: coding, reasoning, long documents and following instructions. Qwen2.5 Instruct 72B wins none, but costs 96% less. They are level on facts.
Which is better for coding?
GPT-5.6 Sol. It wins 2 of the 2 coding tests both models report; Qwen2.5 Instruct 72B wins none.
Which is cheaper?
GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens; Qwen2.5 Instruct 72B costs $0.47 and $0.49. That makes Qwen2.5 Instruct 72B about 96% cheaper for the same work.
How do you compare the two?
We use the 13 benchmark tests both models have published scores on. The verdict counts the 9 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.