Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.5
91
MiMo-V2-Pro
84
Verified leaderboard positions: GPT-5.5 #5 · MiMo-V2-Pro unranked
Pick GPT-5.5 if you want the stronger benchmark profile. MiMo-V2-Pro only becomes the better choice if coding is the priority.
Coding
+19.4 difference
GPT-5.5
MiMo-V2-Pro
$5 / $30
N/A
N/A
N/A
N/A
N/A
1M
1M
Pick GPT-5.5 if you want the stronger benchmark profile. MiMo-V2-Pro only becomes the better choice if coding is the priority.
GPT-5.5 is clearly ahead on the provisional aggregate, 91 to 84. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 91 to 84.
MiMo-V2-Pro has the edge for coding in this comparison, averaging 78 versus 58.6. Inside this category, Terminal-Bench Hard is the benchmark that creates the most daylight between them.
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