Gemini 3.1 Flash Image Preview (Nano Banana 2)

Google's latest image generation model combining Nano Banana Pro's advanced capabilities with Gemini Flash's speed. Supports text and image input, outputs text and images up to 4K resolution.

Input price: $0.45list $0.50-10%
Output price: $2.70list $3.00-10%
Context: 128K
Max output: 8K
Modalities: InputTextImagePDFOutputTextImage
Capability: —
30-day uptime: —
Released: 2026-02-26
Knowledge cutoff: —

This model is deprecated

Deprecated on 2026-06-25.

Providers

Providers that serve this model. With Auto, each request goes to the best available provider. Prices in USD per 1M tokens; stats cover the last 30 days.

AutoInput$0.45-10%Output$2.70-10%Cache read$0.045-10%Context128KMax output8KWe send each request to the best-priced healthy provider. You pay that provider’s price.Google (Gemini)Input$0.45-10%Output$2.70-10%Cache read$0.045-10%United StatesNo trainingNo retention

Pricing

All prices for this model, by service tier.

Input: $0.45list $0.50-10%; per 1M tokens
Output: $2.70list $3.00-10%; per 1M tokens
Cache read: $0.045list $0.05-10%; per 1M tokens
Reasoning output: $2.70list $3.00-10%; per 1M tokens
Image input: $0.45list $0.50-10%; per 1M tokens
Image output: $54.00list $60.00-10%; per 1M tokens
Web search: $0.0126list $0.014-10%; per request

Make a request

Set your provider preferences, then copy the request. It reads your API key from OHMYGPT_API_KEY.

curl https://api.ohmygpt.com/v1/models/google/gemini-3.1-flash-image-preview:generateContent \
  -H "x-goog-api-key: $OHMYGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "parts": [
          {
            "text": "Hello"
          }
        ]
      }
    ]
  }'

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Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-02), which combines dozens of benchmarks with GPT-5 set at 150. epoch.ai/eci

Price: our current input price per 1M tokens in USD, lowest across channels. Dated snapshots and resold copies of the same model are merged into one point; free models are not shown.

Shaded area: capability above and price below the median of all models. Pareto frontier: no other model is both cheaper and more capable.

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