Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Mellum2-12B-A2.5B-Thinking
59
MiMo-V2-Flash
59
Treat this as a split decision. Mellum2-12B-A2.5B-Thinking makes more sense if its workflow fits your team better; MiMo-V2-Flash is the better fit if knowledge is the priority or you need the larger 256K context window.
Coding
+3.5 difference
Knowledge
+26.9 difference
Mellum2-12B-A2.5B-Thinking
MiMo-V2-Flash
N/A
$0 / $0
N/A
129 t/s
N/A
2.14s
128K
256K
Treat this as a split decision. Mellum2-12B-A2.5B-Thinking makes more sense if its workflow fits your team better; MiMo-V2-Flash is the better fit if knowledge is the priority or you need the larger 256K context window.
Mellum2-12B-A2.5B-Thinking and MiMo-V2-Flash finish on the same provisional overall score, so this is less about a single winner and more about where the edge shows up. The provisional headline says tie; the benchmark table is where the real choice happens.
MiMo-V2-Flash gives you the larger context window at 256K, compared with 128K for Mellum2-12B-A2.5B-Thinking.
Mellum2-12B-A2.5B-Thinking and MiMo-V2-Flash are tied on the provisional overall score, so the right pick depends on which category matters most for your use case.
MiMo-V2-Flash has the edge for knowledge tasks in this comparison, averaging 84.5 versus 57.6. Inside this category, GPQA is the benchmark that creates the most daylight between them.
MiMo-V2-Flash has the edge for coding in this comparison, averaging 73.4 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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