Nano Banana 2 Text to Image | High-Quality Text-to-Image API

Google Nano Banana 2 Text-to-Image

Nano Banana 2 Text-to-Image (Gemini 3.1 Flash Image) is Google’s lightweight yet powerful AI image generation model, built for creators who need fast, high-quality visuals from simple text prompts. It transforms words into expressive, realistic images with remarkable clarity, composition, and style diversity — all within seconds.

Why Choose This?

Fast generation Optimized for speed while maintaining high visual quality.
Multi-resolution support Output in 1K, 2K, or 4K resolution based on your needs.
Flexible aspect ratios Multiple options including 1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9, 1:4, 4:1, 1:8, and 8:1.
Cinematic quality Excels at photorealistic scenes with atmospheric lighting and anamorphic lens effects.
Prompt Enhancer Built-in tool to automatically improve your descriptions.
Format choice Export in PNG or JPEG format.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the desired image
aspect_ratio	No	Aspect ratio: 1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9, 1:4, 4:1, 1:8, 8:1
resolution	No	Output resolution: 0.5k, 1k (default), 2k, 4k
enable_web_search	No	Enable web search to enhance generation with real-time info (default: false)
enable_image_search	No	Enable image search to enhance generation with real-time info (default: false)
output_format	No	Output format: png (default), jpeg

How to Use

Write your prompt — describe the image in detail, including style, lighting, and composition.
Choose aspect ratio (optional) — select a preset or leave empty for default.
Select resolution — choose 1K, 2K, or 4K based on your needs.
Choose output format — PNG for transparency support, JPEG for smaller file size.
Use Prompt Enhancer (optional) — click to automatically refine your description.
Run — submit and download your generated image.

Pricing

Resolution	Cost
0.5k	$0.045
1k	$0.07
2k	$0.105
4k	$0.14
Web search	+$0.014
Image search	+$0.014

Best Use Cases

Cinematic Imagery — Generate atmospheric scenes with anamorphic lens effects and film-like quality.
Character Portraits — Create detailed character illustrations with specific attributes.
Social Media Content — Produce eye-catching visuals for various platforms with flexible aspect ratios.
Marketing & Ads — Generate professional images for campaigns and promotions.
Concept Art — Visualize creative ideas with photorealistic rendering.

Pro Tips

Use cinematic language like "anamorphic lens look," "neon signs reflected in puddles," or "rainy Tokyo street at night" for atmospheric results.
Be specific about character attributes (hair color, clothing, accessories) for consistent results.
Match aspect ratio to your target platform: 9:16 for Stories/Reels, 16:9 for banners, 1:1 for feeds.
Try the Prompt Enhancer to automatically improve your descriptions.
2K outputs are charged at 1.5× the standard rate; 4K at 2× the standard rate.

Notes

Prompt is the only required field.
If aspect_ratio is not selected, the model uses a default ratio.
2K resolution costs 1.5× and 4K resolution costs 2× the standard rate.
Ensure your prompts comply with Google's Safety Guidelines.

Related Models

Nano Banana Pro Text-to-Image — Pro tier with enhanced quality.
Nano Banana Pro Edit — Edit images with text instructions.
Nano Banana 2 Edit — Image editing capabilities.

Nano Banana 2 Text To Image API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/google/nano-banana-2/text-to-image with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Nano Banana 2 Text To Image below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/google/nano-banana-2/text-to-image" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "aspect_ratio": "1:1",
    "resolution": "1k",
    "enable_web_search": false,
    "enable_image_search": false,
    "output_format": "png",
    "enable_sync_mode": false,
    "enable_base64_output": false
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("google/nano-banana-2/text-to-image", {
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "aspect_ratio": "1:1",
        "resolution": "1k",
        "enable_web_search": false,
        "enable_image_search": false,
        "output_format": "png",
        "enable_sync_mode": false,
        "enable_base64_output": false
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "google/nano-banana-2/text-to-image",
    {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "aspect_ratio": "1:1",
    "resolution": "1k",
    "enable_web_search": false,
    "enable_image_search": false,
    "output_format": "png",
    "enable_sync_mode": false,
    "enable_base64_output": false
}
)

print(output["outputs"][0])  # → URL of the generated output

Nano Banana 2 Text To Image API — Frequently asked questions

What is the Nano Banana 2 Text To Image API?

Nano Banana 2 Text To Image is a Google model for image generation, exposed as a REST API on WaveSpeedAI. Google Nano Banana 2 (Gemini 3.1 Flash Image) delivers Pro-quality image generation at Flash speed with 512px to 4K resolution support. Features include improved text rendering, character consistency for up to 5 characters, and real-world knowledge integration. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Nano Banana 2 Text To Image API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/google/google-nano-banana-2-text-to-image.

How much does Nano Banana 2 Text To Image cost per run?

Nano Banana 2 Text To Image starts at $0.070 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Nano Banana 2 Text To Image accept?

Key inputs: `prompt`, `aspect_ratio`, `resolution`, `enable_base64_output`, `enable_image_search`, `enable_sync_mode`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/google/google-nano-banana-2-text-to-image.

How do I get started with the Nano Banana 2 Text To Image API?

Sign up for a free WaveSpeedAI account to claim starter credits, copy your API key from /accesskey, then call the endpoint shown in the API tab of the playground. The playground also auto-generates a code sample in Python, JavaScript, or cURL for the parameters you've set.

Can I use Nano Banana 2 Text To Image outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (Google). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

ExamplesView all

Related Models

README

Google Nano Banana 2 Text-to-Image

Why Choose This?

Parameters

How to Use

Pricing

Best Use Cases

Pro Tips

Notes

Related Models

Nano Banana 2 Text To Image API — Quick start

Nano Banana 2 Text To Image API — Frequently asked questions