Nano Banana Text to Image

google/nano-banana/text-to-image

Gemini 2.5 Flash Image. Lightweight and fast. The most affordable option for instant, high-volume generation.

Examples

Nano Banana Text to Image example 1
Nano Banana Text to Image example 2
Nano Banana Text to Image example 3

Parameters

NameTypeDefaultConstraintsDescription
prompt *Prompttextarea≤ 5000 charsDescribe the image you want to generate. Be specific about the subject, style, colors, and composition.
aspect_ratioAspect Ratioselect16:91:1 | 3:2 | 2:3 | 3:4 | 4:3 | 4:5 | 5:4 | 9:16 | …Choose the aspect ratio for the generated image.

Output fields

FieldTypeDescription
imagesarray<string>Generated image URLs

API

Call this model through one unified REST API. Get a key on the API Keys page.

cURL
# 1) Submit — returns { "task_uuid": "..." }
curl -X POST "https://www.namifusion.com/api/v1/marketplace/run/google/nano-banana/text-to-image" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": {
    "prompt": "A futuristic eco-city skyline at sunset, featuring organic spiraling skyscrapers covered in lush vertical gardens and cascading waterfalls. Sleek flying vehicles weaving through the towers, warm golden hour lighting reflecting off glass surfaces. Photorealistic, architectural visualization, clean composition, 8k resolution, wide angle lens.",
    "aspect_ratio": "16:9"
  }
}'

# 2) Poll until status is "completed", then read the output URLs
curl "https://www.namifusion.com/api/v1/marketplace/run/tasks/TASK_UUID" \
  -H "Authorization: Bearer YOUR_API_KEY"
Python
import time, requests

API_KEY = "YOUR_API_KEY"
HEADERS = {"Authorization": f"Bearer {API_KEY}"}

# 1) Submit
resp = requests.post(
    "https://www.namifusion.com/api/v1/marketplace/run/google/nano-banana/text-to-image",
    headers=HEADERS,
    json={
        "input": {
            "prompt": "A futuristic eco-city skyline at sunset, featuring organic spiraling skyscrapers covered in lush vertical gardens and cascading waterfalls. Sleek flying vehicles weaving through the towers, warm golden hour lighting reflecting off glass surfaces. Photorealistic, architectural visualization, clean composition, 8k resolution, wide angle lens.",
            "aspect_ratio": "16:9"
        }
    },
)
resp.raise_for_status()  # 401/402/429/5xx stop here instead of polling a bad task
task = resp.json()

# 2) Poll until a terminal state (completed / failed / cancelled).
#    This model is allowed up to 300s server-side.
deadline = time.time() + 360
while task.get("status") not in ("completed", "failed", "cancelled"):
    if time.time() > deadline:
        raise TimeoutError(f"still {task.get('status')} — keep the task_uuid and poll later")
    time.sleep(3)
    poll = requests.get(f"https://www.namifusion.com/api/v1/marketplace/run/tasks/{task['task_uuid']}", headers=HEADERS)
    poll.raise_for_status()
    task = poll.json()

print(task["status"], task.get("output"))
JavaScript
const API_KEY = "YOUR_API_KEY";
const HEADERS = { Authorization: `Bearer ${API_KEY}` };

// 1) Submit
const resp = await fetch("https://www.namifusion.com/api/v1/marketplace/run/google/nano-banana/text-to-image", {
  method: "POST",
  headers: { ...HEADERS, "Content-Type": "application/json" },
  body: JSON.stringify({
    "input": {
      "prompt": "A futuristic eco-city skyline at sunset, featuring organic spiraling skyscrapers covered in lush vertical gardens and cascading waterfalls. Sleek flying vehicles weaving through the towers, warm golden hour lighting reflecting off glass surfaces. Photorealistic, architectural visualization, clean composition, 8k resolution, wide angle lens.",
      "aspect_ratio": "16:9"
    }
  }),
});
if (!resp.ok) throw new Error(`submit failed: ${resp.status} ${await resp.text()}`);
let task = await resp.json();

// 2) Poll until a terminal state (completed / failed / cancelled).
//    This model is allowed up to 300s server-side.
const deadline = Date.now() + 360 * 1000;
while (!["completed", "failed", "cancelled"].includes(task.status)) {
  if (Date.now() > deadline) throw new Error(`still ${task.status} — keep the task_uuid and poll later`);
  await new Promise((r) => setTimeout(r, 3000));
  const poll = await fetch(`https://www.namifusion.com/api/v1/marketplace/run/tasks/${task.task_uuid}`, { headers: HEADERS });
  if (!poll.ok) throw new Error(`poll failed: ${poll.status}`);
  task = await poll.json();
}

console.log(task.status, task.output);

Documentation

Google Nano Banana (Gemini 2.5 Flash Image)

The Essential Text-to-Image Model: Fast, Affordable, and Lightweight.

Google’s Nano Banana (Standard) is a streamlined AI image generation model built for speed and efficiency. Powered by the Gemini 2.5 Flash architecture, it is designed for creators and developers who need instant visuals without the overhead of heavy compute. It transforms simple text prompts into clear, well-composed images in seconds—with zero cold-start latency.


🚀 Key Features

  • Instant Image Creation: Optimized for low latency. Generate coherent visuals from short prompts instantly.
  • Cost-Effective: The most affordable choice for high-volume generation and rapid prototyping.
  • Versatile Styles: Adapts naturally to various artistic needs, including realistic photos, anime, illustrations, and painterly styles.
  • Accurate Understanding: robustly interprets subjects, backgrounds, and object relationships to create contextually correct compositions.
  • Clean Lighting: Produces balanced, visually appealing results without overexposure or unnatural shadows.

🛠️ Technical Specifications

ParameterDetails
Model ArchitectureGemini 2.5 Flash Image
InputText Prompts
OutputJPEG / PNG / WEBP
LatencyUltra-Low (No cold starts)

Sample Prompts:

"A golden retriever playing in a field of sunflowers at sunset." "A futuristic city skyline with neon reflections on wet streets." "An elegant still-life photo of coffee and croissants by a window."

💰 Pricing

TypeCost
Standard Generation$0.038 / image

💡 Best Use Cases

  • Rapid Prototyping: Quickly iterate on concepts and storyboards.
  • Social Media: Generate daily content for feeds and stories at scale.
  • E-commerce: Produce clean background assets and product visualizations.
  • Education: Visualize simple concepts for teaching materials.

🔗 Model Family

Looking for more advanced features? Check out the Nano Banana Pro series:

  • Nano Banana Pro: For 4K resolution and higher fidelity.
  • Nano Banana Pro Edit: For in-painting and modification.
  • Nano Banana Pro Ultra: For maximum detail.

Note: Please ensure all prompts comply with Google’s Safety Guidelines. Content violating safety policies may result in generation errors.

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Nano Banana Text to Image API — Pricing, Playground & Docs | NamiFusion