Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Grok 4.20
73
MiMo-V2-Pro
83
Pick MiMo-V2-Pro if you want the stronger benchmark profile. Grok 4.20 only becomes the better choice if you need the larger 2M context window.
Coding
+17.0 difference
Grok 4.20
MiMo-V2-Pro
$2 / $6
N/A
233 t/s
N/A
10.33s
N/A
2M
1M
Pick MiMo-V2-Pro if you want the stronger benchmark profile. Grok 4.20 only becomes the better choice if you need the larger 2M context window.
MiMo-V2-Pro is clearly ahead on the provisional aggregate, 83 to 73. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
MiMo-V2-Pro's sharpest advantage is in coding, where it averages 78 against 61. The single biggest benchmark swing on the page is SWE-bench Verified, 76.7% to 78%.
Grok 4.20 gives you the larger context window at 2M, compared with 1M for MiMo-V2-Pro.
MiMo-V2-Pro is ahead on BenchLM's provisional leaderboard, 83 to 73. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 76.7% and 78%.
MiMo-V2-Pro has the edge for coding in this comparison, averaging 78 versus 61. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
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