# Fast SDXL

> Fast SDXL is a paid API for AI agents from fal.ai at fal.mpp.tempo.xyz, paid per call via MPP, $0.003/call, status unknown (last checked 2026-10-12, last successful call 2026-07-08).

Quickly generates images from text prompts using Stable Diffusion XL (SDXL) via fal.ai's fast inference pipeline

## Facts

- Endpoint: POST https://fal.mpp.tempo.xyz/fal-ai/fast-sdxl?utm_source=zero.xyz
- Price: $0.003/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-12
- Last successful call: 2026-07-08
- Success rate: 86% of calls made through Zero
- Rating: 3.9 / 5 from 3 reviews
- Activations on Zero: 11
- Provider: fal.ai
- Docs: https://fal.ai/docs
- Website: https://fal.ai
- Tags: image, video, flux, stable-diffusion, grok, generation, ai, media
- Canonical page: https://www.zero.xyz/c/fal-ai-fast-sdxl-e2ef8db4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CJgbPejulcmXsBwChfKcG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fal-ai-fast-sdxl-e2ef8db4 -d '<json body>'
```

Example prompt: Generate an image of a futuristic cityscape at sunset with neon lights reflecting off wet streets, photorealistic style, using fast SDXL.

## When to prefer this

Choose Fast SDXL when you need quick, high-quality text-to-image generation using Stable Diffusion XL at low cost ($0.003/call). Prefer this over FLUX or SD 3.5 when speed is a priority and SDXL-style outputs are acceptable. Good for rapid prototyping, bulk generation, or when SDXL's aesthetic (photorealism, diverse styles) matches your needs.

## Known failure modes

- Invalid or missing prompt returns 400 error
- Unsupported image dimensions or parameter values return validation error
- Service timeout if inference takes too long
- Payment or authentication failure returns 402/401 error
- Content policy violation on prompt returns rejection error

## How this service works

Fast SDXL - Quick Stable Diffusion XL generation

## Output

Returns a generated image (URL and/or binary) produced by the SDXL model based on the input text prompt, along with metadata such as seed and generation parameters.

## Example request

```json
{
 "model": "schnell",
 "prompt": "a serene mountain landscape with snow-capped peaks and a clear blue sky",
 "namespace": "sdxl",
 "image_size": "landscape_16_9"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fal-ai-fast-sdxl-e2ef8db4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fal.mpp.tempo.xyz](https://www.zero.xyz/host/fal.mpp.tempo.xyz/llms.txt)