Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
DeepSeek V4 Flash
57
Mellum2-12B-A2.5B-Instruct
27
Verified leaderboard positions: DeepSeek V4 Flash #30 · Mellum2-12B-A2.5B-Instruct unranked
Pick DeepSeek V4 Flash if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Instruct only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Coding
+19.9 difference
Knowledge
+4.3 difference
DeepSeek V4 Flash
Mellum2-12B-A2.5B-Instruct
$0.14 / $0.28
N/A
N/A
N/A
N/A
N/A
1M
128K
Pick DeepSeek V4 Flash if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Instruct only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
DeepSeek V4 Flash is clearly ahead on the provisional aggregate, 57 to 27. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
DeepSeek V4 Flash's sharpest advantage is in coding, where it averages 57.1 against 37.2. The single biggest benchmark swing on the page is GPQA, 71.2% to 40.9%.
DeepSeek V4 Flash gives you the larger context window at 1M, compared with 128K for Mellum2-12B-A2.5B-Instruct.
DeepSeek V4 Flash is ahead on BenchLM's provisional leaderboard, 57 to 27. The biggest single separator in this matchup is GPQA, where the scores are 71.2% and 40.9%.
DeepSeek V4 Flash has the edge for knowledge tasks in this comparison, averaging 45.2 versus 40.9. Inside this category, GPQA is the benchmark that creates the most daylight between them.
DeepSeek V4 Flash has the edge for coding in this comparison, averaging 57.1 versus 37.2. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
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