Google Nano Banana 2 Fast (Gemini 3.1 Flash Image) is the cheapest Nano Banana 2 option, starting at just $0.045 per image. Delivers fast text-to-image generation with 2K default output and 4K support. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Idle
$0.045per run·~22 / $1
ExamplesView all
an epic sci-fi movie poster, a lone astronaut standing on a vast desert planet, a gigantic ringed planet rising in the sky, dramatic sunset lighting, blowing sand, cinematic composition, IMAX scale, photorealistic, space for title at the top, film poster design, ultra detailed
!["resolution": "8K ultra high definition",
"style": "hyper - realistic food illustration with editorial infographic overlays",
"lighting": "soft directional key light, subtle rimlight'
"scene_description": "A vertical stack of cake slices floating above a plate against soft pink gradient background",
"motion_elements": ["floating fruits", "floating macarons", "crumbs suspended in air"],
"text_design": {
"ingredient_name_color": "metallic gold",
"indicator_lines": "long, thin, smooth golden lines with rounded corners"](https://static.wavespeed.ai/examples/4b61a169ffe54dca9e3833c8b6530bd5/2efd23bc-87fd-45a1-9f9d-4ffcac729b9c-u2_9e89e49f-5298-4a87-be53-734e337984b1.png)
"resolution": "8K ultra high definition", "style": "hyper - realistic food illustration with editorial infographic overlays", "lighting": "soft directional key light, subtle rimlight' "scene_description": "A vertical stack of cake slices floating above a plate against soft pink gradient background", "motion_elements": ["floating fruits", "floating macarons", "crumbs suspended in air"], "text_design": { "ingredient_name_color": "metallic gold", "indicator_lines": "long, thin, smooth golden lines with rounded corners"
a man standing in the middle of a busy city street while everything around him is frozen in time, suspended rain drops and floating papers, dramatic cinematic lighting, epic composition, hyper realistic, movie still, 8k
a quiet train platform at sunset, golden sunlight streaming through the station roof, a traveler holding a suitcase waiting alone, cinematic composition, film still, warm color grading, 35mm lens
Related Models
README
Google Nano Banana 2 Text-to-Image Fast
Nano Banana 2 Text-to-Image Fast (Gemini 3.1 Flash Image) is the cheapest Nano Banana 2 option, starting at just $0.045 per image. It delivers faster generation times while maintaining high visual quality, with 2K resolution by default.
Why Choose This?
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Lowest cost Nano Banana 2 The cheapest Nano Banana 2 option at just $0.045 per image.
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Speed-optimized Faster generation times compared to the standard variant.
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High-resolution default 2K output by default with 4K available for maximum detail.
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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.
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Cinematic quality Excels at photorealistic scenes with atmospheric lighting and anamorphic lens effects.
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Prompt Enhancer Built-in tool to automatically improve your descriptions.
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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: 2k (default), 4k |
| enable_web_search | No | Enable web 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 2K (default) 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 |
|---|---|
| 2k | $0.045 |
| 4k | $0.05 |
| Web 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.
Notes
- Prompt is the only required field.
- If aspect_ratio is not selected, the model uses a default ratio.
- Ensure your prompts comply with Google's Safety Guidelines.
Related Models
- Nano Banana 2 Text-to-Image — Standard variant with 0.5K/1K/2K/4K resolution options.
- Nano Banana 2 Edit Fast — Fast image editing.
- Nano Banana 2 Edit — Image editing capabilities.
- Nano Banana Pro Text-to-Image — Pro tier with enhanced quality.
Nano Banana 2 Text To Image Fast API — Quick start
Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/google/nano-banana-2/text-to-image-fast 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 Fast below.
HTTP example
# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/google/nano-banana-2/text-to-image-fast" \
-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": "2k",
"enable_web_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-fast", {
"prompt": "A cinematic shot of a city at sunset, soft golden light",
"aspect_ratio": "1:1",
"resolution": "2k",
"enable_web_search": false,
"output_format": "png",
"enable_sync_mode": false,
"enable_base64_output": false
});
console.log(result.outputs[0]); // → URL of the generated outputPython example
# pip install wavespeed
import wavespeed
output = wavespeed.run(
"google/nano-banana-2/text-to-image-fast",
{
"prompt": "A cinematic shot of a city at sunset, soft golden light",
"aspect_ratio": "1:1",
"resolution": "2k",
"enable_web_search": false,
"output_format": "png",
"enable_sync_mode": false,
"enable_base64_output": false
}
)
print(output["outputs"][0]) # → URL of the generated outputNano Banana 2 Text To Image Fast API — Frequently asked questions
What is the Nano Banana 2 Text To Image Fast API?
Nano Banana 2 Text To Image Fast is a Google model for image generation, exposed as a REST API on WaveSpeedAI. Google Nano Banana 2 Fast (Gemini 3.1 Flash Image) is the cheapest Nano Banana 2 option, starting at just $0.045 per image. Delivers fast text-to-image generation with 2K default output and 4K support. 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 Fast 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-fast.
How much does Nano Banana 2 Text To Image Fast cost per run?
Nano Banana 2 Text To Image Fast starts at $0.045 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 Fast accept?
Key inputs: `prompt`, `aspect_ratio`, `resolution`, `enable_base64_output`, `enable_sync_mode`, `enable_web_search`. 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-fast.
How do I get started with the Nano Banana 2 Text To Image Fast 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 Fast 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.