Nano Banana Pro (Gemini 3 Pro Image Preview)

Structured outputReasoningImage inputImage output

Model card Launch post Website

Nano Banana Pro for higher-fidelity image generation and design-heavy edits

Released: 10mo ago
Image input / 1M tokens: From $1
Image output / 1M tokens: From $60
Cached input / 1M tokens: $0.20
Cache write / 1M tokens: $0.38

Sources:models.devOpenRouter

Image prices are listed in the billing units published by each provider; resolution and quality can affect the final cost.

Provider pricing

Rates are shown in each provider's published units. Resolution, quality, audio, and other settings may change the final charge.

Google AI Studio

google-ai-studio/global/flex

Image input

$1.00 / 1,000,000 tokens

Google AI Studio

google-ai-studio/global/flex

Image output

$60.00 / 1,000,000 tokens

Google AI Studio

google-ai-studio/global

Image input

$2.00 / 1,000,000 tokens

Google AI Studio

google-ai-studio/global

Image output

$120.00 / 1,000,000 tokens

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

No benchmark results have been matched to this model yet.

Specifications

Developer: Google DeepMind
Model family: Gemini
Type: Image generation
Predecessor: —
Successor: —
Released: November 20, 2025
Model ID: google/gemini-3-pro-image-preview
Openness: Closed
License: —
Input modalities: image, text
Output modalities: image, text
Modality: text+image->text+image
Resolutions: 1K, 2K, 4K
Aspect ratios: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
Images per request: 1
Reference images: 0–14
Hugging Face: —
Source freshness: Metadata synced Oct 8, 2026, 10:17 PM UTC

Additional source evidence

Source model: google/gemini-3-pro-image-preview
Source family: gemini-pro
Last updated: 2025-11-20
Knowledge cutoff: 2025-01
Model context: 66K
Model output limit: 33K
Open weights: No
File attachments: Yes
Reasoning: Yes
Tool calling: No
Temperature control: Yes

Complete source record (JSON)

{
  "id": "google/gemini-3-pro-image-preview",
  "name": "Nano Banana Pro Preview",
  "description": "Nano Banana Pro for higher-fidelity image generation and design-heavy edits",
  "family": "gemini-pro",
  "last_updated": "2025-11-20",
  "knowledge": "2025-01",
  "attachment": true,
  "reasoning": true,
  "tool_call": false,
  "temperature": true,
  "modalities": {
    "input": [
      "text",
      "image"
    ],
    "output": [
      "text",
      "image"
    ]
  },
  "limit": {
    "context": 65536,
    "output": 32768
  },
  "release_date": "2025-11-20",
  "open_weights": false
}

Infrastructure

Provider availability

All providers

Provider	Endpoint	Pricing (published units)	Uptime 1d	Data handling
Google AI Studio	google-ai-studio/global/flex	$1 (Image input / 1M tokens); $60 (Image output / 1M tokens)	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15
Google AI Studio	google-ai-studio/global	$1 (Image input / 1M tokens); $60 (Image output / 1M tokens)	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-10-15

Provider data:OpenRouter

Text provenance

Gemini app/web

Google SynthID text watermarking

Google DeepMind says text generated in the Gemini app and web experience is watermarked with SynthID by adjusting token probabilities.

Official explanation