Google: Nano Banana 2 (Gemini 3.1 Flash Image) (google/gemini-3.1-flash-image) costs $0.5 per 1M prompt tokens and $3 per 1M completion tokens, has a 131,072-token context window, and supports structured outputs, reasoning and response format. Data updated 2026-10-30.
- Prompt price
- $0.5 / 1M tokens
- Completion price
- $3 / 1M tokens
- Context
- 131,072 tokens
- Input modalities
- image, text
- Output modalities
- image, text
- Tokenizer
- Gemini
- Instruct type
- —
- Knowledge cutoff
- —
- Hugging Face
- —
Last price change: 2026-06-18
Gemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines advanced...
Price history
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