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Face-off

Gemini 3.5 Flash vs Gemini 3.1 Pro Preview

Gemini 3.5 Flash versus Gemini 3.1 Pro Preview on list price and published Arena rating. Gemini 3.5 Flash Arena 1482 · Gemini 3.1 Pro Preview Arena 1480 Blended list price Gemini 3.5 Flash $7.13 and Gemini 3.1 Pro Preview $9.50 per 1M tokens.

Gemini 3.5 FlashGoogleArena 1482$7.13 / 1M
Gemini 3.5 Flash leads by 2 Arena pointsGemini 3.1 Pro Preview costs 1.3x more
Gemini 3.1 Pro PreviewGoogleArena 1480$9.50 / 1M

Gemini 3.5 Flash

Google

Input / 1M$1.50Output / 1M$9.00Arena1482Value1441,000 coding edits$10.20

Open model

Gemini 3.1 Pro Preview

Google

Input / 1M$2.00Output / 1M$12.00Arena1480Value1351,000 coding edits$13.60

Open model

Gemini 3.5 Flash leads by 2 Arena points. Gemini 3.1 Pro Preview costs 1.3x more, moving from Gemini 3.5 Flash to Gemini 3.1 Pro Preview. The 1,000-edit cost uses a planning assumption of 2,000 input and 800 output tokens, not a measured trace. Share this face-off. The link renders an Open Graph image of the two models.