Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.5
80
MiMo-V2.5
74
Verified leaderboard positions: Claude Opus 4.5 #7 · MiMo-V2.5 unranked
Pick Claude Opus 4.5 if you want the stronger benchmark profile. MiMo-V2.5 only becomes the better choice if multimodal & grounded is the priority or you need the larger 1M context window.
Agentic
+3.3 difference
Coding
+9.8 difference
Multimodal
+7.3 difference
Claude Opus 4.5
MiMo-V2.5
$null / $null
$0.4 / $2
46 t/s
N/A
1.01s
N/A
200K
1M
Pick Claude Opus 4.5 if you want the stronger benchmark profile. MiMo-V2.5 only becomes the better choice if multimodal & grounded is the priority or you need the larger 1M context window.
Claude Opus 4.5 is clearly ahead on the provisional aggregate, 80 to 74. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude Opus 4.5's sharpest advantage is in coding, where it averages 65.9 against 56.1. The single biggest benchmark swing on the page is MMMU-Pro, 70.6% to 77.9%. MiMo-V2.5 does hit back in multimodal & grounded, so the answer changes if that is the part of the workload you care about most.
MiMo-V2.5 is the reasoning model in the pair, while Claude Opus 4.5 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. MiMo-V2.5 gives you the larger context window at 1M, compared with 200K for Claude Opus 4.5.
Claude Opus 4.5 is ahead on BenchLM's provisional leaderboard, 80 to 74. The biggest single separator in this matchup is MMMU-Pro, where the scores are 70.6% and 77.9%.
Claude Opus 4.5 has the edge for coding in this comparison, averaging 65.9 versus 56.1. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
MiMo-V2.5 has the edge for agentic tasks in this comparison, averaging 65.8 versus 62.5. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
MiMo-V2.5 has the edge for multimodal and grounded tasks in this comparison, averaging 77.9 versus 70.6. Inside this category, CharXiv is the benchmark that creates the most daylight between them.
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