What is FLUX.3 Video and what is it good for?

FLUX.3 Video is Black Forest Labs' video generation model, suited to keyframe-controlled generation and to extending an existing clip.

How much does FLUX.3 Video cost?

$0.17 per second of output at 720p and $0.29 at 1080p. Video continuation is dearer: $0.41 and $0.53 per second respectively.

Why does continuing a video cost more?

Continuation is a separate line on the provider's own price table, roughly 2.4x the ordinary generation rate. If you supply a source video, the job is billed on that ladder.

How do I access FLUX.3 Video from inside Iran?

Create an account on Hormouz and generate an API key. Hormouz provides a stable path to this model from inside Iran, with no foreign credit card required.

Black Forest Labs: FLUX.3 Video: image generation model

FLUX.3 Video is Black Forest Labs' video model, with keyframe control and video continuation. Served through Hormouz.

Pricing:: $0.17 - $0.53 / second of video
Type:: video

FLUX.3 Video is Black Forest Labs' video generation model, covering three modes: text-to-video, image-guided generation with opening and closing keyframes, and continuation of an existing video.

Output is 720p or 1080p and length is adjustable from 5 to 20 seconds. Synchronised audio generation is supported.

Pricing is per second of output video and follows the resolution: $0.17/second at 720p and $0.29/second at 1080p. Video CONTINUATION is a separate, dearer ladder — $0.41 at 720p and $0.53 at 1080p, roughly 2.4x the base rate.

On Hormouz, FLUX.3 Video runs as an asynchronous prediction job and is reachable from inside Iran with no foreign credit card required.

FLUX.3 Video is a video generation model from Black Forest Labs. It supports text-to-video, image-guided generation with opening and closing keyframes, and video continuation workflows, making it suited for controlled...

Quickstart

# Create the prediction, then poll until succeeded
curl -s https://api.hormouz.net/v1/predictions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"version":"black-forest-labs/flux-3-video","input":{"prompt":"A beautiful sunset"}}'

Specs

Vendor	Black Forest Labs
Type	Video
Context window	—
Pricing	$0.17 - $0.53 / second of video
API	predictions

Code example

cURL

# Create the prediction, then poll until succeeded
curl -s https://api.hormouz.net/v1/predictions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"version":"black-forest-labs/flux-3-video","input":{"prompt":"A beautiful sunset"}}'

Python

import requests
BASE = "https://api.hormouz.net/v1"
H = {"Authorization": "Bearer ng-YOUR_API_KEY", "Content-Type": "application/json"}
r = requests.post(f"{BASE}/predictions", headers=H,
    json={"version": "black-forest-labs/flux-3-video", "input": {"prompt":"A beautiful sunset"}})
print(r.json()["id"])

JavaScript

const BASE = "https://api.hormouz.net/v1";
const res = await fetch(`${BASE}/predictions`, {
  method: "POST",
  headers: { Authorization: "Bearer ng-YOUR_API_KEY", "Content-Type": "application/json" },
  body: JSON.stringify({ version: "black-forest-labs/flux-3-video", input: {"prompt":"A beautiful sunset"} }),
});
const { id } = await res.json();

Buy the Black Forest Labs: FLUX.3 Video API, paid in rial

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One Hormouz key reaches Black Forest Labs: FLUX.3 Video and 600+ other models, and you pay only for what you use.
No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.

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FAQ

What is FLUX.3 Video and what is it good for?: FLUX.3 Video is Black Forest Labs' video generation model, suited to keyframe-controlled generation and to extending an existing clip.
How much does FLUX.3 Video cost?: $0.17 per second of output at 720p and $0.29 at 1080p. Video continuation is dearer: $0.41 and $0.53 per second respectively.
Why does continuing a video cost more?: Continuation is a separate line on the provider's own price table, roughly 2.4x the ordinary generation rate. If you supply a source video, the job is billed on that ladder.
How do I access FLUX.3 Video from inside Iran?: Create an account on Hormouz and generate an API key. Hormouz provides a stable path to this model from inside Iran, with no foreign credit card required.

Updated 2026-10-13