Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.5
89
MiMo-V2-Omni
83
Verified leaderboard positions: GPT-5.5 #2 · MiMo-V2-Omni unranked
Pick GPT-5.5 if you want the stronger benchmark profile. MiMo-V2-Omni only becomes the better choice if coding is the priority.
Coding
+16.2 difference
GPT-5.5
MiMo-V2-Omni
$5 / $30
N/A
N/A
N/A
N/A
N/A
1M
262K
Pick GPT-5.5 if you want the stronger benchmark profile. MiMo-V2-Omni only becomes the better choice if coding is the priority.
GPT-5.5 is clearly ahead on the provisional aggregate, 89 to 83. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5 gives you the larger context window at 1M, compared with 262K for MiMo-V2-Omni.
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 89 to 83.
MiMo-V2-Omni has the edge for coding in this comparison, averaging 74.8 versus 58.6. GPT-5.5 stays close enough that the answer can still flip depending on your workload.
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