Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemma 4 12B
53
GPT-5.4 mini
69
Pick GPT-5.4 mini if you want the stronger benchmark profile. Gemma 4 12B only becomes the better choice if knowledge is the priority.
Knowledge
+20.4 difference
Multimodal
+7.5 difference
Gemma 4 12B
GPT-5.4 mini
N/A
$0.75 / $4.5
N/A
201 t/s
N/A
3.85s
256K
400K
Pick GPT-5.4 mini if you want the stronger benchmark profile. Gemma 4 12B only becomes the better choice if knowledge is the priority.
GPT-5.4 mini is clearly ahead on the provisional aggregate, 69 to 53. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.4 mini's sharpest advantage is in multimodal & grounded, where it averages 76.6 against 69.1. The single biggest benchmark swing on the page is GPQA, 78.8% to 88%. Gemma 4 12B does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
GPT-5.4 mini gives you the larger context window at 400K, compared with 256K for Gemma 4 12B.
GPT-5.4 mini is ahead on BenchLM's provisional leaderboard, 69 to 53. The biggest single separator in this matchup is GPQA, where the scores are 78.8% and 88%.
Gemma 4 12B has the edge for knowledge tasks in this comparison, averaging 77.8 versus 57.4. Inside this category, HLE w/o tools is the benchmark that creates the most daylight between them.
GPT-5.4 mini has the edge for multimodal and grounded tasks in this comparison, averaging 76.6 versus 69.1. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
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