Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemini 3.1 Flash-Lite
48
Gemini 3 Pro
81
Pick Gemini 3 Pro if you want the stronger benchmark profile. Gemini 3.1 Flash-Lite only becomes the better choice if you want the cheaper token bill.
Multimodal
+7.9 difference
Gemini 3.1 Flash-Lite
Gemini 3 Pro
$0.25 / $1.5
$2 / $12
205 t/s
109 t/s
7.50s
32.65s
1M
2M
Pick Gemini 3 Pro if you want the stronger benchmark profile. Gemini 3.1 Flash-Lite only becomes the better choice if you want the cheaper token bill.
Gemini 3 Pro is clearly ahead on the provisional aggregate, 81 to 48. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3 Pro's sharpest advantage is in multimodal & grounded, where it averages 81.1 against 73.2. The single biggest benchmark swing on the page is CharXiv, 73.2% to 81.4%.
Gemini 3 Pro is also the more expensive model on tokens at $2.00 input / $12.00 output per 1M tokens, versus $0.25 input / $1.50 output per 1M tokens for Gemini 3.1 Flash-Lite. That is roughly 8.0x on output cost alone. Gemini 3 Pro gives you the larger context window at 2M, compared with 1M for Gemini 3.1 Flash-Lite.
Gemini 3 Pro is ahead on BenchLM's provisional leaderboard, 81 to 48. The biggest single separator in this matchup is CharXiv, where the scores are 73.2% and 81.4%.
Gemini 3 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 81.1 versus 73.2. Inside this category, CharXiv is the benchmark that creates the most daylight between them.
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