Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemini 3 Pro Deep Think
90
GPT-5.4 Pro
91
Pick GPT-5.4 Pro if you want the stronger benchmark profile. Gemini 3 Pro Deep Think only becomes the better choice if you need the larger 2M context window.
Reasoning
+38.2 difference
Gemini 3 Pro Deep Think
GPT-5.4 Pro
$null / $null
$30 / $180
N/A
74 t/s
N/A
151.79s
2M
1.05M
Pick GPT-5.4 Pro if you want the stronger benchmark profile. Gemini 3 Pro Deep Think only becomes the better choice if you need the larger 2M context window.
GPT-5.4 Pro finishes one point ahead on BenchLM's provisional leaderboard, 91 to 90. 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.
GPT-5.4 Pro's sharpest advantage is in reasoning, where it averages 83.3 against 45.1. The single biggest benchmark swing on the page is ARC-AGI-2, 45.1% to 83.3%.
Gemini 3 Pro Deep Think gives you the larger context window at 2M, compared with 1.05M for GPT-5.4 Pro.
GPT-5.4 Pro is ahead on BenchLM's provisional leaderboard, 91 to 90. The biggest single separator in this matchup is ARC-AGI-2, where the scores are 45.1% and 83.3%.
GPT-5.4 Pro has the edge for reasoning in this comparison, averaging 83.3 versus 45.1. Inside this category, ARC-AGI-2 is the benchmark that creates the most daylight between them.
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