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Google announced Nano Banana 2 on February 18, 2026 and exposed the API billing entry as Gemini 3.1 Flash Image Preview. Official Gemini API pricing lists $0.30 per 1M text/image/video input tokens, $1.00 per 1M audio input tokens, $2.50 per 1M output tokens, and $0.039 per generated image.
| Field | Before | After |
|---|---|---|
| status | not_listed | preview |
| api_model | — | gemini-3.1-flash-image-preview |
| input_text_image_video_per_1m | — | 0.3 |
| input_audio_per_1m | — | 1 |
| output_text_per_1m | — | 2.5 |
| output_image_per_unit | — | 0.039 |
Benchmark Gemini 3.1 Flash Image Preview against your current image generation and editing baseline with a fixed prompt set.
Track preview pricing and output-image volume separately before broad rollout, because image output is billed per generated image.
Nano Banana 2 is available in the Gemini app and Google AI Studio.
Pricing lists $0.30 input, $2.50 output, and $0.039 image output.
Check your models and usage for free. See the relevant official changes, estimated cost, and a practical next step.