Actionfal.aiUpdated June 2026

How do I run a fal.ai model?

Short answer: Drop the "fal.ai → Run fal.ai Model" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 1 fal.ai actions

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
Model ID model_id	string	Required	fal model id
Prompt prompt	string	Required	Prompt (required)
Image Size image_size	string	Optional	Image Size
Num Images num_images	string	Optional	Num Images

Sample request

{
  "model_id": "e.g. fal-ai/flux/schnell, fal-ai/flux-pro/v1.1, fal-ai/runway-gen3",
  "prompt": "{{trigger.prompt}}",
  "image_size": "{{trigger.image_size}}",
  "num_images": "{{trigger.num_images}}"
}

Returns

{
  "status": "IN_QUEUE",
  "request_id": "req-abc123",
  "status_url": "https://...",
  "response_url": "https://..."
}

Use these fields in downstream nodes for routing, logging, or error handling.

FAQ

Questions about Run fal.ai Model.

What does the Run fal.ai Model action do in fal.ai?

Submits an inference request to fal.ai's queue (fast cold starts on diffusion models). Returns a request ID immediately; poll the status endpoint or configure a webhook for completion. For image/video/audio generation workflows where latency matters.

What inputs does Run fal.ai Model require?

Required: Model ID, Prompt. Every input accepts a static value or a variable from any upstream node in your workflow.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if fal.ai returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does Run fal.ai Model support batch operations?

Yes. Run Run fal.ai Model inside a Loop node to process arrays. Tiny Command handles fal.ai's rate limits automatically so you don't have to throttle manually.

How do I run a fal.ai model?

The fields this action accepts.

Apps that pair well as the trigger for Run fal.ai Model.

Questions about Run fal.ai Model.

Send run fal.ai model from your workflows.