How do I generate images from text with an API?

You can generate images from text with an image-generation API by sending a prompt (the text description) to the model and receiving back an image URL or image bytes.

Basic flow

1. Choose an image model/provider
   • Examples: OpenAI, Stability AI, Adobe, Replicate, etc.
2. Create an API key
   • Store it securely in an environment variable.
3. Send a text prompt
   • Example: “A futuristic city at sunset, cinematic lighting, ultra-detailed”
4. Get the result
   • Usually returned as:
     • a hosted image URL
     • base64-encoded image data
     • a file you can save locally
5. Display or store the image

Example with OpenAI-style API

Python

from openai import OpenAI

client = OpenAI(api_key="YOUR_API_KEY")

response = client.images.generate(
    model="gpt-image-1",
    prompt="A red fox wearing a spacesuit on Mars, realistic, high detail"
)

image_url = response.data[0].url
print(image_url)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

const response = await client.images.generate({
  model: "gpt-image-1",
  prompt: "A red fox wearing a spacesuit on Mars, realistic, high detail"
});

console.log(response.data[0].url);

Common options

Depending on the API, you may also pass:

• size — image dimensions like 1024x1024
• style — realistic, artistic, etc.
• n — number of images to generate
• negative_prompt — what to avoid
• seed — for repeatability
• quality — speed vs detail

Practical tips

• Be specific: subject, style, lighting, composition, mood.
• Add constraints: “no text,” “white background,” “centered composition.”
• Iterate by refining the prompt.
• Check the provider’s content policy and rate limits.

If you want the simplest possible implementation

Tell me:

• your language: Python / JavaScript / cURL / another
• which provider you want to use

…and I’ll give you a copy-paste example.