Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
DeepSeek V4 Flash Base
29
Mellum2-12B-A2.5B-Instruct
27
Pick DeepSeek V4 Flash Base 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.
Knowledge
+11.3 difference
DeepSeek V4 Flash Base
Mellum2-12B-A2.5B-Instruct
$null / $null
N/A
N/A
N/A
N/A
N/A
1M
128K
Pick DeepSeek V4 Flash Base 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 Base has the cleaner provisional overall profile here, landing at 29 versus 27. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
DeepSeek V4 Flash Base's sharpest advantage is in knowledge, where it averages 52.2 against 40.9.
DeepSeek V4 Flash Base gives you the larger context window at 1M, compared with 128K for Mellum2-12B-A2.5B-Instruct.
DeepSeek V4 Flash Base is ahead on BenchLM's provisional leaderboard, 29 to 27.
DeepSeek V4 Flash Base has the edge for knowledge tasks in this comparison, averaging 52.2 versus 40.9. Inside this category, MMLU-Redux is the benchmark that creates the most daylight between them.
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