Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.5 Pro
100
MiMo-V2.5
74
Pick GPT-5.5 Pro if you want the stronger benchmark profile. MiMo-V2.5 only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Agentic
+24.3 difference
GPT-5.5 Pro
MiMo-V2.5
$30 / $180
$null / $null
N/A
N/A
N/A
N/A
1M
1M
Pick GPT-5.5 Pro if you want the stronger benchmark profile. MiMo-V2.5 only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
GPT-5.5 Pro is clearly ahead on the provisional aggregate, 100 to 74. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5 Pro's sharpest advantage is in agentic, where it averages 90.1 against 65.8.
GPT-5.5 Pro is ahead on BenchLM's provisional leaderboard, 100 to 74.
GPT-5.5 Pro has the edge for agentic tasks in this comparison, averaging 90.1 versus 65.8. MiMo-V2.5 stays close enough that the answer can still flip depending on your workload.
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