Google: Gemini 2.5 Flash vs Google: Gemini 3.1 Pro Preview

Side-by-side model comparison based on OpenRouter API data.

SpecGoogle: Gemini 2.5 FlashGoogle: Gemini 3.1 Pro Preview
ProviderGoogleGoogle
Context Length1.0M1.0M
Max Output66K66K
Input Price/1M$0.30$2.00
Output Price/1M$2.50$12
Cache Read/1M$0.03$0.20
Cache Write/1M$0.08$0.38
Input ModalitiesFile + Image + Text + Audio + VideoAudio + File + Image + Text + Video
Output ModalitiesTextText
TokenizerGeminiGemini
ModeratedNoNo
Google: Gemini 2.5 Flash vs Google: Gemini 3.1 Pro Preview -- AI Model Comparison | AIToolRank