Claude Opus 4.5 vs Qwen2.5 Instruct 72B
Wins 5 of 5 areas
Coding · Reasoning · Facts · Long documents · Following instructions
Wins 0 of 5 areas
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Claude Opus 4.5 is the stronger all-rounder.Qwen2.5 Instruct 72B is cheaper.
Scores updated · 21 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.
- CodingWriting and fixing software30Claude Opus 4.53 of 3 tests
- ReasoningHard problems that need careful thinking30Claude Opus 4.53 of 3 tests
- FactsGetting facts right instead of making them up20Claude Opus 4.52 of 2 tests
- Long documentsFinding answers in very long texts20Claude Opus 4.52 of 2 tests
- Following instructionsDoing exactly what it is asked10Claude Opus 4.51 of 1 test
Following instructions 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.
Qwen2.5 Instruct 72B costs 97% 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 Claude Opus 4.5 pulls ahead
- Reasons across sets of long documentsAA-LCR+57.3points ahead
- Fixes real GitHub issues in Python projectsSWE-bench Verified+57.1points ahead
- Hard command-line tasks in a real terminalTerminal-Bench Hard+42.5points ahead
Where Qwen2.5 Instruct 72B pulls ahead
No clear win on a test scored out of 100.
Every test, side by side
All 21 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4.5
- SWE-bench VerifiedClaude Opus 4.5 by 57.180.923.8+57.1
- Terminal-Bench HardClaude Opus 4.5 by 42.5474.5+42.5
- SciCodeClaude Opus 4.5 by 22.849.526.7+22.8
ReasoningClaude Opus 4.5
- GPQA DiamondClaude Opus 4.5 by 37.586.649.1+37.5
- Humanity's Last ExamClaude Opus 4.5 by 26.530.13.6+26.5
- CritPtClaude Opus 4.5 by 4.64.60+4.6
FactsClaude Opus 4.5
- AA-Omniscience · AccuracyClaude Opus 4.5 by 29.146.617.5+29.1
- AA-Omniscience · Non-hallucinationClaude Opus 4.5 by 24.53914.5+24.5
Long documentsClaude Opus 4.5
- AA-LCRClaude Opus 4.5 by 57.377.320+57.3
- LongBench v2Claude Opus 4.5 by 2564.439.4+25
Following instructionsClaude Opus 4.5
- IFBenchClaude Opus 4.5 by 21.15836.9+21.1
Other results10 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-OmniscienceClaude Opus 4.5 by 67.114-53.1+67.1
- τ²-Bench Telecom (AA run)Claude Opus 4.5 by 5589.534.5+55
- Artificial Analysis Coding IndexClaude Opus 4.5 by 35.947.811.9+35.9
- LiveCodeBenchClaude Opus 4.5 by 31.58755.5+31.5
- LiveBenchClaude Opus 4.5 by 23.77652.3+23.7
- AA IntelligenceClaude Opus 4.5 by 21.429.17.7+21.4
- MMLU-ProClaude Opus 4.5 by 18.489.571.1+18.4
- MMMLUClaude Opus 4.5 by 1690.874.8+16
- MMLU-ReduxClaude Opus 4.5 by 8.895.686.8+8.8
- C-EvalClaude Opus 4.5 by 392.289.2+3
Questions people ask
Which is better, Claude Opus 4.5 or Qwen2.5 Instruct 72B?
Claude Opus 4.5 wins all five areas where both have results: coding, reasoning, facts, long documents and following instructions. Qwen2.5 Instruct 72B wins none, but costs 97% less.
Which is better for coding?
Claude Opus 4.5. It wins 3 of the 3 coding tests both models report; Qwen2.5 Instruct 72B wins none.
Which is cheaper?
Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens; Qwen2.5 Instruct 72B costs $0.47 and $0.49. That makes Qwen2.5 Instruct 72B about 97% cheaper for the same work.
How do you compare the two?
We use the 21 benchmark tests both models have published scores on. The verdict counts the 11 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 10 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.