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Stable Diffusion V35 Large
x402
Stable Diffusion V35 Large is a paid API for AI agents from fal.x402.paysponge.com, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-10).
Submits a Stable Diffusion 3.5 Large text-to-image generation job via fal.ai, supporting ControlNet, LoRAs, and IP-Adapter conditioning, paid via x402/USDC.
Price / call$0.04
Success—
StatusUnknown
How this service works
POST /fal-ai/stable-diffusion-v35-large
Output
Returns a JSON object with a request_id, a response_url to poll for the completed image, a status_url to check job progress, a cancel_url to abort the job, and the current queue_position. The actual generated image URL is retrieved asynchronously via the response_url once processing completes.
Example use cases
Example prompt
“Generate a photorealistic landscape image of a misty mountain valley at sunrise with golden hour lighting using Stable Diffusion 3.5 Large — portrait 16:9 format, seed 42, and apply a watercolor LoRA from https://huggingface.co/my-lora/watercolor with scale 0.8.”
Technical details
Endpoint
POSThttps://fal.x402.paysponge.com/fal-ai/stable-diffusion-v35-large?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need Stable Diffusion 3.5 Large specifically — particularly when you require advanced conditioning features like ControlNet for structural guidance, custom LoRAs for style transfer, or IP-Adapter for image-based conditioning. Prefer over FLUX or SDXL siblings when SD 3.5 Large's architecture and fine-tuning ecosystem is required. Use when paying per-call via x402/USDC micropayment is acceptable at $0.04 per generation.
Side effects
- Invalid or missing prompt returns a 400 validation error
- Insufficient USDC balance or failed x402 payment returns a 402 Payment Required error
- Invalid LoRA path URL causes job failure or model loading error
- ControlNet conditioning image URL is unreachable, causing job failure
- Invalid image dimensions (non-multiple of 8 or unsupported resolution) may cause generation errors
- Queue backlog may cause significant wait time before image is available at response_url
- IP-Adapter path or image_encoder_path not found causes model loading failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | integer | |
| loras | array | |
| promptrequired | string | Text prompt describing the desired output. Be concrete: name the subject, style, composition, and any key attributes. Longer prompts (50–200 words) typically produce more faithful results. |
| sync_mode | boolean | |
| controlnet | object | |
| image_size | — | |
| ip_adapter | object | |
| num_images | integer | |
| output_format | string | |
| guidance_scale | number | |
| negative_prompt | string | |
| num_inference_steps | integer | |
| enable_safety_checker | boolean |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| cancel_urlrequired | string | |
| request_idrequired | string | |
| status_urlrequired | string | |
| response_urlrequired | string | |
| queue_positionrequired | integer |
Tags
x402
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