Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemma 4 12B
53
o3-mini
55
Pick o3-mini if you want the stronger benchmark profile. Gemma 4 12B only becomes the better choice if coding is the priority or you need the larger 256K context window.
Coding
+22.7 difference
Knowledge
+0.6 difference
Gemma 4 12B
o3-mini
N/A
$1.1 / $4.4
N/A
160 t/s
N/A
7.12s
256K
200K
Pick o3-mini if you want the stronger benchmark profile. Gemma 4 12B only becomes the better choice if coding is the priority or you need the larger 256K context window.
o3-mini has the cleaner provisional overall profile here, landing at 55 versus 53. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
Gemma 4 12B gives you the larger context window at 256K, compared with 200K for o3-mini.
o3-mini is ahead on BenchLM's provisional leaderboard, 55 to 53. The biggest single separator in this matchup is GPQA, where the scores are 78.8% and 77.2%.
Gemma 4 12B has the edge for knowledge tasks in this comparison, averaging 77.8 versus 77.2. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Gemma 4 12B has the edge for coding in this comparison, averaging 72 versus 49.3. o3-mini stays close enough that the answer can still flip depending on your workload.
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