Gemini 3.1 Flash Image Preview (Nano Banana 2)
Gemini 3.1 Flash Image Preview (Nano Banana 2) Preview (Nano Banana 2) improves visual output quality at flash-tier speed, adding Google Image Search grounding, configurable thinking levels, and new resolution and aspect ratio options including 512p and ultra-wide formats.
Image GenImplicit CachingReasoningVision (Image)Web Search
index.ts
import { generateText } from 'ai'
const result = await generateText({ model: 'google/gemini-3.1-flash-image-preview', prompt: 'Render a picture of a red balloon.',});More models by Google
| Model |
|---|
| 1M | 2.3s | 203tps | $1.50/M | $7.50/M | Read:$0.15/M Write:— | $14/K + input costs | +3 |   | 07/21/2026 | |||
| 1M | 0.6s | 443tps | $0.30/M | $2.50/M | Read:$0.03/M Write:— | $14/K + input costs | +3 | | 07/21/2026 | |||
| 1M | 2.5s | 177tps | $1.50/M | $9/M | Read:$0.15/M Write:— | $14/K + input costs | +3 | | 05/19/2026 | |||
| 1M | 0.6s | 244tps | $0.25/M | $1.50/M | Read:$0.03/M Write:— | $14/K + input costs | +3 | | 03/03/2026 | |||
| 1M | 2.9s | 95tps | $2/M | $12/M | Read: $0.2/M Write: — | $14/K + input costs | +3 | | 02/19/2026 | |||
| 1M | 0.7s | 181tps | $0.50/M | $3/M | Read: $0.05/M Write: — | $14/K + input costs | +3 | | 12/17/2025 |