Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Mellum2-12B-A2.5B-Thinking
58
Sakana Fugu Ultra
100
Pick Sakana Fugu Ultra 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
+13.6 difference
Knowledge
+37.9 difference
Mellum2-12B-A2.5B-Thinking
Sakana Fugu Ultra
N/A
$5 / $30
N/A
N/A
N/A
N/A
128K
1M
Pick Sakana Fugu Ultra 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.
Sakana Fugu Ultra is clearly ahead on the provisional aggregate, 100 to 58. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Sakana Fugu Ultra's sharpest advantage is in knowledge, where it averages 95.5 against 57.6. The single biggest benchmark swing on the page is GPQA, 57.6% to 95.5%.
Sakana Fugu Ultra gives you the larger context window at 1M, compared with 128K for Mellum2-12B-A2.5B-Thinking.
Sakana Fugu Ultra is ahead on BenchLM's provisional leaderboard, 100 to 58. The biggest single separator in this matchup is GPQA, where the scores are 57.6% and 95.5%.
Sakana Fugu Ultra has the edge for knowledge tasks in this comparison, averaging 95.5 versus 57.6. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Sakana Fugu Ultra has the edge for coding in this comparison, averaging 83.5 versus 69.9. Inside this category, LiveCodeBench is the benchmark that creates the most daylight between them.
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