Claude Opus 4.5 vs MiMo V2 Pro
Wins 4 of 6 areas
Coding · Agents · Reasoning · Long documents
Wins 1 of 6 areas
Following instructions
Claude Opus 4.5 is the stronger all-rounder.MiMo V2 Pro is better at following instructions.
Scores updated · 20 tests both models report · How we compare
Where each one wins
Tests won in each of the six 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 software41Claude Opus 4.54 of 5 tests
- ReasoningHard problems that need careful thinking10Claude Opus 4.51 of 3 tests · 2 ties
- AgentsCarrying out multi-step tasks on its own10Claude Opus 4.51 of 1 test
- Long documentsFinding answers in very long texts10Claude Opus 4.51 of 1 test
- Following instructionsDoing exactly what it is asked01MiMo V2 Pro1 of 1 test
- FactsGetting facts right instead of making them up11Even1 each
Agents, 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.
The biggest differences
The three tests each model wins by the widest margin. Scores are out of 100.
Where Claude Opus 4.5 pulls ahead
- Answers hard knowledge questions correctlyAA-Omniscience · Accuracy+20points ahead
- Reasons across sets of long documentsAA-LCR+9points ahead
- Code for real scientific research problemsSciCode+7points ahead
Where MiMo V2 Pro pulls ahead
- Fixes real GitHub issues in many programming languagesSWE-bench Multilingual+64.7points ahead
- Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+31points ahead
- Follows unfamiliar, precisely checkable instructionsIFBench+10.8points ahead
Every test, side by side
All 20 tests both models report. The winning score is in its model's colour; marks a score checked independently.
CodingClaude Opus 4.5
- SWE-bench MultilingualMiMo V2 Pro by 64.7771.7+64.7
- SciCodeClaude Opus 4.5 by 749.542.5+7
- Terminal-Bench HardClaude Opus 4.5 by 6.14740.9+6.1
- LMArena · WebDevClaude Opus 4.5 by 36 rating points14691433+36 rating
- SWE-bench VerifiedClaude Opus 4.5 by 2.980.978+2.9
ReasoningClaude Opus 4.5
- CritPtClaude Opus 4.5 by 4.34.60.3+4.3
- GPQA Diamondtie86.687tie
- Humanity's Last Examtie30.130.4tie
FactsEven
- AA-Omniscience · Non-hallucinationMiMo V2 Pro by 313970+31
- AA-Omniscience · AccuracyClaude Opus 4.5 by 2046.626.6+20
Following instructionsMiMo V2 Pro
- IFBenchMiMo V2 Pro by 10.85868.8+10.8
Other results7 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.
- DeepSearchQA (F1)MiMo V2 Pro by 10.676.186.7+10.6
- AA-OmniscienceClaude Opus 4.5 by 9.4144.6+9.4
- Artificial Analysis Coding IndexClaude Opus 4.5 by 6.447.841.4+6.4
- τ²-Bench Telecom (AA run)MiMo V2 Pro by 5.589.595+5.5
- AA Agentic IndexMiMo V2 Pro by 3.259.662.8+3.2
- Terminal-Bench 2.0Claude Opus 4.5 by 2.259.357.1+2.2
- AA Intelligencetie29.128.6tie
Questions people ask
Which is better, Claude Opus 4.5 or MiMo V2 Pro?
Claude Opus 4.5 wins four of the six areas where both have results: coding, agents, reasoning and long documents. MiMo V2 Pro wins following instructions. They are level on facts.
Which is better for coding?
Claude Opus 4.5. It wins 4 of the 5 coding tests both models report; MiMo V2 Pro wins 1.
How do you compare the two?
We use the 20 benchmark tests both models have published scores on. The verdict counts the 13 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 7 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.