Image Generation
Free tierGenerate, edit, and upscale images from a prompt.
About this API
Text-to-image, image-to-image, inpainting, and upscaling behind one endpoint, with aspect-ratio control, seeds for reproducibility, negative prompts, and a safety classifier applied before anything is returned.
Common use cases
Quickstart
Every Zephiel API uses the same base URL, the same key header, and the same error envelope.
curl -X GET "https://zephiel.com/api/v1/image-generation/generate" \
-H "X-Zephiel-Key: $ZEPHIEL_API_KEY" \
-H "Accept: application/json"Example response
{
"id": "img_5ce02a",
"seed": 884213,
"width": 1024,
"height": 1024,
"url": "https://cdn.zephiel.com/g/5ce02a.png",
"safety": { "flagged": false }
}/v1/image-generation/generateCreate an image from a prompt/v1/image-generation/editInpaint or extend an existing image/v1/image-generation/upscaleIncrease resolution up to 4xAll endpoints return JSON and accept the X-Zephiel-Key header. Rate limits are enforced per plan and reported in X-RateLimit-Remaining.
Plans can be changed or cancelled at any time. Overage is charged per 1,000 requests rather than hard-blocking your traffic.
Free
100 images/mo
5 req/min
Free
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — not included
- Email support — not included
- Usage analytics and alerts — not included
- 99.9% uptime SLA — not included
- Webhooks — not included
- Priority support — not included
- Custom rate limits — not included
- 99.99% uptime SLA — not included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Starter
10,000 images/mo
60 req/min
$30/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — not included
- Priority support — not included
- Custom rate limits — not included
- 99.99% uptime SLA — not included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Most popular
Pro
250,000 images/mo
600 req/min
$120/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — included
- Priority support — included
- Custom rate limits — included
- 99.99% uptime SLA — included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Enterprise
Unlimited images
Custom
$420/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — included
- Priority support — included
- Custom rate limits — included
- 99.99% uptime SLA — included
- Dedicated success manager — included
- SSO / SAML — included
- Custom SLA, DPA, and BAA — included
- Private deployment option — included
- Volume pricing — included
4.5
12 reviews
Ibrahim Diallo
Head of Platform
Replaced a fragile in-house upscaling job
We had a script doing editorial illustration that broke every few months and only one person understood. Image Generation replaced it in an afternoon and nobody maintains it now.
Nadia Haddad
Principal Engineer
Errors are actually readable
When something goes wrong Image Generation says what and why, with a code I can branch on. I have integrated diffusion services that return 200 with an error buried in the body, so this is a relief.
Diego Navarro
Tech Lead
Held up under real load
We push Image Generation hard during peak and latency has stayed flat. No throttling surprises, no silent degradation — the numbers on the listing matched what we measured.
Lin Zhao
Backend Developer
Good coverage for inpainting
We checked Image Generation against our own inpainting reference data before committing. Coverage was better than the incumbent we were paying four times as much for.
Fatima Bello
Operations Director
Documentation matched reality
Every sample in the Image Generation docs ran unmodified. That sounds like a low bar until you have integrated something where it is not.
Pieter de Vries
Staff Engineer
Now handles product photography variants too
We adopted Image Generation for marketing and social assets and ended up using it for product photography variants as well. Same key, no new contract, no second integration.
Olamide Fashola
Technical Lead
Support answered properly
Asked Meridian AI about an edge case in Image Generation and got an explanation from someone who had clearly read the code, not a link to the FAQ.
Isabella Ferreira
Software Engineer
Quietly reliable
Image Generation has not surprised us once in eight months of production traffic. That is the highest compliment I can pay a dependency.
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