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Google: Nano Banana Pro (Gemini 3 Pro Image Preview)

google/gemini-3-pro-image-preview

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Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and high-fidelity visual synthesis. The model generates context-rich graphics, from infographics and diagrams to cinematic composites, and can incorporate real-time information via Search grounding.

It offers industry-leading text rendering in images (including long passages and multilingual layouts), consistent multi-image blending, and accurate identity preservation across up to five subjects. Nano Banana Pro adds fine-grained creative controls such as localized edits, lighting and focus adjustments, camera transformations, and support for 2K/4K outputs and flexible aspect ratios. It is designed for professional-grade design, product visualization, storyboarding, and complex multi-element compositions while remaining efficient for general image creation workflows.

Modalities

In / Out Price

$2 / $12per 1M

Context

66K

Released

Nov 20, 2025

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PlaygroundProvidersPricingPerformanceUptimeBenchmarksAppsActivityFAQ

Playground

Providers

This model is hosted by one provider. OpenRouter forwards every request to it directly — no routing decisions to make.

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Performance

Throughput is how fast the model writes (tokens per second — higher is better). Latency is total round-trip time (lower is better). TTFT is time-to-first-token — how long before you see anything appear (lower is better).

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Benchmarks

Scores on standardized evaluations. Higher percentages are better — and rank percentile shows where this model lands among all models on OpenRouter.

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

Activity

Token volume and request traffic to this model over time.

Quick Start

Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.

About Google: Nano Banana Pro (Gemini 3 Pro Image Preview)

OpenRouter makes Google: Nano Banana Pro (Gemini 3 Pro Image Preview) available through a unified, OpenAI-compatible API using the model ID google/gemini-3-pro-image-preview. It is served by Google AI Studio.

Google: Nano Banana Pro (Gemini 3 Pro Image Preview) accepts images and text and returns images and text. It has a 65,536-token context window and a maximum output of 32,768 tokens.

On OpenRouter, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) costs $2.00/M input tokens and $12.00/M output tokens, with separate rates for Cache Read at $0.20/M tokens, Cache Write at $0.375/M tokens, Image Input at $2.00/M tokens, Image Output at $120.00/M tokens, Input Audio at $2.00/M tokens, Input Audio Cache at $0.20/M tokens and Web Search at $14.00/1K calls. Effective pricing can be lower when prompt caching applies. It was released on November 20, 2025.

More models from Google

  • Gemini 3.7 Flash
  • Gemini 3.6 Flash
  • Gemini 3.5 Flash Lite

Frequently asked questions

Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reasoning, real-world grounding, and high-fidelity visual synthesis.

Nano Banana Pro (Gemini 3 Pro Image Preview) costs $2.00/M input tokens and $12.00/M output tokens, with separate rates for Cache Read at $0.20/M tokens, Cache Write at $0.375/M tokens, Image Input at $2.00/M tokens, Image Output at $120.00/M tokens, Input Audio at $2.00/M tokens, Input Audio Cache at $0.20/M tokens and Web Search at $14.00/1K calls.

Nano Banana Pro (Gemini 3 Pro Image Preview) has a 65,536 token context window. It supports up to 32,768 completion tokens.

The Nano Banana Pro (Gemini 3 Pro Image Preview) endpoint shown on this page does not accept tools, so function calling is unavailable there. It also supports structured outputs via a JSON schema in response_format.

Nano Banana Pro (Gemini 3 Pro Image Preview) accepts images and text as input and returns images and text. Up to 14 reference images can be attached to one request for image editing.

Gemini 3.7 Flash, Gemini 3.6 Flash, Gemini 3.5 Flash Lite and 25 more are other text models from Google.

Nano Banana Pro (Gemini 3 Pro Image Preview) was released on November 20, 2025.

$2.00$120.00$2.00$12.00$0.20$0.203.63s73 tps
100.00%

Throughput

73tok/s

P50, best across providers

Latency

3.63s

P50, best provider

Uptime (3d)

100.00%

Availability (3d)

98.72%

Availability over the last 3 days

Last 72 hours
Availability 98.72%
3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability
98.72%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and customization options.

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