Nano Banana 2

Nano Banana 2 is Google's new state-of-the-art fast image generation and editing model

By Google

Pricing: $0.08 per image

Overview

Nano Banana 2 by Google, fast image generation across 4 resolution tiers (0.5K–4K). Optional web search and thinking modes. SynthID watermarking on every output.

Key capabilities

• **4 resolution tiers in one model**, From 0.5K (fastest, cheapest) to 4K, choose the right resolution per request without switching models.
• **14 aspect ratios including extremes**, Native support for 14 ratios from 21:9 to 1:8, including panoramic (8:1) and ultra-tall (1:8) formats with no letterboxing.
• **Character consistency up to 5 people**, Maintain consistent character appearance across up to 5 people in a single generation, ideal for storytelling, campaigns, and multi-character scenes.
• **SynthID watermarking**, Every output carries Google's SynthID digital watermark, invisibly embedded and robust to common edits, enabling attribution and provenance tracking.
• **Web search + thinking modes**, Optional web search grounds generation in current events. Thinking mode adds reasoning for complex prompts, both priced as add-ons.

Nano Banana model family by Google

| Model | Details |

|---|---|

| **Nano Banana 2** (this model) | Standard, fast generation from 0.5K to 4K resolution |

| **Nano Banana Pro** | Premium, higher quality, web search enabled, up to 4K |

Technical specifications

| Spec | Details |

|---|---|

| Architecture | Gemini 3.1 Flash Image |

| Resolutions | 0.5K · 1K · 2K · 4K |

| Aspect Ratios | 14 ratios including extreme (8:1, 1:8, 4:1, 1:4) |

| Add-ons | Web search · Model thinking |

| Watermarking | SynthID digital watermark |

| Output Formats | JPEG · PNG · WebP |

| License | Commercial |

Examples

• A bioluminescent treehouse hotel suspended between ancient redwood trees at twilight. Three geodesic glass pods connected by vine-wrapped rope bridges, each pod glowing turquoise from within. Orchids and phosphorescent mushrooms grow on the bark. A narrow wooden staircase spirals up the trunk. Mist drifts through the canopy.

Frequently asked questions

What is Nano Banana 2?

Nano Banana 2 is Google's fast image generation model with resolution tiers from 0.5K to 4K. It supports optional web search for real-time grounded generation and a thinking mode for complex prompts, making it a flexible choice for high-throughput production workflows.

How much does Nano Banana 2 cost on Runflow?

Nano Banana 2 starts at $0.06/image at 0.5K and $0.08/image at the standard 1K resolution. 2K is $0.12/image and 4K is $0.16/image. Optional add-ons: web search (+$0.015/image), high thinking (+$0.002/image).

What does the web search feature do?

When enable_web_search is true, Nano Banana 2 queries the web before generating, grounding the output in current information. Useful for generating images of recent events, news, or time-sensitive topics. Costs an additional $0.015 per image.

What is thinking_level?

The thinking_level parameter enables model reasoning before generation. 'minimal' uses light reasoning. 'high' uses deeper reasoning for complex prompts at +$0.002/image. Omit the parameter entirely to disable thinking.

What aspect ratios does Nano Banana 2 support?

Nano Banana 2 supports any aspect ratio via the aspect_ratio parameter, including extreme panoramic and vertical ratios up to 8:1 and 1:8. Set to 'auto' to let the model pick the best ratio for your prompt.

How does Nano Banana 2 compare to Nano Banana Pro?

Nano Banana Pro starts at $0.15/image at 1K and offers higher quality outputs, it's the premium tier. Nano Banana 2 is the faster, more cost-effective option at $0.08/image starting price. Both are on the same Runflow API.

Can I use Nano Banana 2 commercially?

Yes. Nano Banana 2 is available under a commercial license. You can use it in production applications, SaaS products, and client deliverables.

Related models

• Nano Banana 2 — Edit, Nano Banana 2 is Google's new state-of-the-art image generation and editing model
• FLUX.1 [dev] Edit, Image-to-image edits with FLUX.1 [dev]. Pass a source image plus a prompt and a transformation strength to redirect the composition while preserving subject identity.
• Multi Angles, Re-render the same subject from a different camera angle. Pick a horizontal view, a vertical angle, and a shot distance: the model rotates the camera around the subject and re-renders the scene from that pose.
• FLUX.2 [klein] 4B Edit, Fast image-edit endpoint backed by FLUX.2 [klein] 4B. Pass a base64 source image with the prompt for low-latency edits.

Discoverable surfaces

• Dispatch endpoint: POST https://api.runflow.io/v1/models/nano-banana-2/runs
• Per-model spec (markdown): https://app.runflow.io/models/nano-banana-2/llms.txt
• Docs page: https://docs.runflow.io/models/nano-banana-2
• Public OpenAPI spec: https://docs.runflow.io/api/openapi.public.json
• Agent skill (start here): https://www.runflow.io/.well-known/agent-skills/runflow/SKILL.md