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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 GenWeb SearchReasoningVision (Image)
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.',
});
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Providers

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Provider
Context
Latency
Throughput
Input
Output
Cache
Web Search
Per Query
Capabilities
ZDR
No Training
Release Date
Google
Legal:Terms
•
Privacy
131K
1.1s
190tps
$0.50/M$3.00/M
Read:$0.05/M
Write:—
$14/K
+ input costs
—
02/26/2026
Google Vertex AI
Legal:Terms
•
Privacy
131K
1.4s
227tps
$0.50/M$3.00/M
Read:$0.05/M
Write:—
$14/K
+ input costs
—
02/26/2026