Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemini 3.1 Pro
93
Gemini 3 Pro
83
Pick Gemini 3.1 Pro if you want the stronger benchmark profile. Gemini 3 Pro only becomes the better choice if you need the larger 2M context window.
Reasoning
+46.0 difference
Multimodal
+2.9 difference
Gemini 3.1 Pro
Gemini 3 Pro
$1.25 / $5
$null / $null
109 t/s
109 t/s
29.71s
32.65s
1M
2M
Pick Gemini 3.1 Pro if you want the stronger benchmark profile. Gemini 3 Pro only becomes the better choice if you need the larger 2M context window.
Gemini 3.1 Pro is clearly ahead on the provisional aggregate, 93 to 83. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3.1 Pro's sharpest advantage is in reasoning, where it averages 77.1 against 31.1. The single biggest benchmark swing on the page is ARC-AGI-2, 77.1% to 31.1%.
Gemini 3 Pro gives you the larger context window at 2M, compared with 1M for Gemini 3.1 Pro.
Gemini 3.1 Pro is ahead on BenchLM's provisional leaderboard, 93 to 83. The biggest single separator in this matchup is ARC-AGI-2, where the scores are 77.1% and 31.1%.
Gemini 3.1 Pro has the edge for reasoning in this comparison, averaging 77.1 versus 31.1. Inside this category, ARC-AGI-2 is the benchmark that creates the most daylight between them.
Gemini 3.1 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 83.9 versus 81. Inside this category, ScreenSpot Pro is the benchmark that creates the most daylight between them.
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