Head-to-head comparison across 3benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Hy3 Preview
60
Mellum2-12B-A2.5B-Thinking
59
Pick Hy3 Preview if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Thinking only becomes the better choice if instruction following is the priority.
Coding
+9.9 difference
Knowledge
+10.9 difference
Inst. Following
+13.4 difference
Hy3 Preview
Mellum2-12B-A2.5B-Thinking
$0 / $0
N/A
N/A
N/A
N/A
N/A
256K
128K
Pick Hy3 Preview if you want the stronger benchmark profile. Mellum2-12B-A2.5B-Thinking only becomes the better choice if instruction following is the priority.
Hy3 Preview finishes one point ahead on BenchLM's provisional leaderboard, 60 to 59. That is enough to call, but not enough to treat as a blowout. This matchup comes down to a few meaningful edges rather than one model dominating the board.
Hy3 Preview gives you the larger context window at 256K, compared with 128K for Mellum2-12B-A2.5B-Thinking.
Hy3 Preview is ahead on BenchLM's provisional leaderboard, 60 to 59. The biggest single separator in this matchup is GPQA, where the scores are 87.2% and 57.6%.
Mellum2-12B-A2.5B-Thinking has the edge for knowledge tasks in this comparison, averaging 57.6 versus 46.7. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Mellum2-12B-A2.5B-Thinking has the edge for coding in this comparison, averaging 69.9 versus 60. Hy3 Preview stays close enough that the answer can still flip depending on your workload.
Mellum2-12B-A2.5B-Thinking has the edge for instruction following in this comparison, averaging 76.5 versus 63.1. Hy3 Preview stays close enough that the answer can still flip depending on your workload.
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