Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemini 3 Pro Deep Think
90
GPT-5.2
79
Pick Gemini 3 Pro Deep Think if you want the stronger benchmark profile. GPT-5.2 only becomes the better choice if reasoning is the priority.
Reasoning
+7.8 difference
Gemini 3 Pro Deep Think
GPT-5.2
$null / $null
$1.75 / $14
N/A
73 t/s
N/A
130.34s
2M
400K
Pick Gemini 3 Pro Deep Think if you want the stronger benchmark profile. GPT-5.2 only becomes the better choice if reasoning is the priority.
Gemini 3 Pro Deep Think is clearly ahead on the provisional aggregate, 90 to 79. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3 Pro Deep Think gives you the larger context window at 2M, compared with 400K for GPT-5.2.
Gemini 3 Pro Deep Think is ahead on BenchLM's provisional leaderboard, 90 to 79. The biggest single separator in this matchup is ARC-AGI-2, where the scores are 45.1% and 52.9%.
GPT-5.2 has the edge for reasoning in this comparison, averaging 52.9 versus 45.1. Inside this category, CritPt is the benchmark that creates the most daylight between them.
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