Modes and model IDs
| Mode | Model ID | Inputs & key parameters |
|---|---|---|
| Text-to-image | z-image-turbo-uncensored | prompt; 1K/2K, ratios 1:1 · 16:9 · 9:16 · 4:3 · 3:4; prompt_extend on/off changes the price; single image per request |
Every mode uses the same request shape: model + prompt + media arrays (images / videos / audios / files as public HTTPS URLs) + params. Full field tables: API docs.
Prices (USD, base list)
| Model | Variant | Price |
|---|---|---|
z-image-turbo-uncensored | Prompt rewrite off | $0.01694/image |
z-image-turbo-uncensored | Prompt rewrite on | $0.03387/image |
Base list prices from the live price list (/pricing · pricing.json); the effective price for your key is returned by GET /ent/v2/prices. Cost is reserved at submit and settled on completion — failed tasks are refunded in full.
Example request
POST https://api.18models.ai/ent/v2/generate
Authorization: Bearer sk-…
Content-Type: application/json
Idempotency-Key: <stable-request-id>
{
"model": "z-image-turbo-uncensored",
"prompt": "Studio portrait of a fictional woman with copper hair, sheer top, soft rim light",
"params": { "resolution": "1k", "ratio": "3:4", "prompt_extend": false }
}
The response is HTTP 202 with a task_id; poll GET https://api.18models.ai/ent/v2/tasks/{task_id} (back off 2 s → 5 s) until status is success or failed, then read result_urls. Ready-made client code: docs → Build with AI or the Agent Skill.
What is allowed
NSFW output is permitted under the 18models Content Policy: fictional adult content, including explicit sexual content, is allowed; content involving minors (in any style) or real, identifiable people is prohibited absolutely and screened on both input and output. Upstream providers apply their own checks in addition to ours — a task rejected upstream fails and is refunded automatically.
- Fictional adults only; the same input/output screening as every model applies.
- prompt_extend rewrites and enriches your prompt upstream — useful for short prompts, but it doubles the per-image price.
FAQ
How much does Z-Image Turbo cost?
$0.017 per image with prompt rewrite off, $0.034 with prompt rewrite on. $5 of credit is roughly 290 images at the base price.
Is Z-Image Turbo NSFW-capable?
Yes, under the 18models Content Policy: fictional adult content allowed, minors and real people prohibited and screened.
When should I use Z-Image Turbo instead of Qwen-Image?
Z-Image Turbo for high-volume, low-latency single images (avatars, previews, chat responses); Qwen-Image 3.0 when you need editing with reference images, batch outputs, or Pro quality.
Related
- Qwen-Image 3.0 (editing, batches)
- API for AI companion apps
- All models & prices
- Pricing
- API docs
- Content Policy