Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Mellum2-12B-A2.5B-Thinking
59
MiMo-V2-Omni
83
Pick MiMo-V2-Omni if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Thinking only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Coding
+4.9 difference
Mellum2-12B-A2.5B-Thinking
MiMo-V2-Omni
N/A
N/A
N/A
N/A
N/A
N/A
128K
262K
Pick MiMo-V2-Omni if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Thinking only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
MiMo-V2-Omni is clearly ahead on the provisional aggregate, 83 to 59. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
MiMo-V2-Omni's sharpest advantage is in coding, where it averages 74.8 against 69.9.
MiMo-V2-Omni gives you the larger context window at 262K, compared with 128K for Mellum2-12B-A2.5B-Thinking.
MiMo-V2-Omni is ahead on BenchLM's provisional leaderboard, 83 to 59.
MiMo-V2-Omni has the edge for coding in this comparison, averaging 74.8 versus 69.9. Mellum2-12B-A2.5B-Thinking stays close enough that the answer can still flip depending on your workload.
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