AI video API · Black Forest Labs

FLUX 3 Video API pricing per second

Generate video with Black Forest Labs's FLUX 3 Video through the Cut.Pro API. You see the price before you generate and pay only for what you use.

  • Pay as you go, no subscription
  • 15 free credits on a new account
  • Free quote before every call
From$0.44per secondR$1.48 · 25 credits5 seconds at 720p: $2.21Updated November 07, 2026

Pricing

FLUX 3 Video pricing by mode and resolution

ModeResolutionPrice per secondIn reaisCredits
Text only720p$0.44R$1.4825 credits
Text only1080p$0.75R$2.5243 credits
From an image720p$0.44R$1.4825 credits
From an image1080p$0.75R$2.5243 credits
First and last frame720p$0.44R$1.4825 credits
First and last frame1080p$0.75R$2.5243 credits

Updated November 07, 2026. Prices use the cheapest credit pack: 1 credit costs $0.0179 (R$0.0599).

Limits

What FLUX 3 Video accepts in each request

Modes
Text only, From an image, and First and last frame
Duration
5 to 20 seconds
Resolutions
720p, 1080p
Aspect ratios
21:9, 16:9, 4:3, 1:1, 3:4, 9:16
Reference images
up to 2
Sound
With or without sound (audio: false)

Code

How to call FLUX 3 Video free quote, generation and result

BODY='{"model":"bfl/flux-3-video","prompt":"a dog surfing at sunset","seconds":5,"resolution":"720p","aspect_ratio":"9:16"}'

CREDITS=$(curl -s -X POST https://api.cut.pro/api/v1/generations/quote \
  -H "X-Api-Key: $CUTPRO_API_KEY" \
  -H "Content-Type: application/json" \
  -d "$BODY" | jq .credits)

curl -X POST "https://api.cut.pro/api/v1/generations?wait=60" \
  -H "X-Api-Key: $CUTPRO_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d "$(jq -c --argjson credits "$CREDITS" '. + {credits: $credits}' <<< "$BODY")"
Read the docs

Questions

API questions before your first call

At 720p, each second costs $0.44 and a minute comes to $26.52 (R$88.74, 1,482 credits). Each generation runs 5 to 20 seconds.
Create an account, make a key and send the request to the quote, which charges nothing. The smallest FLUX 3 Video generation costs 124 credits, more than the 15 free ones: use those to try a cheaper model from the catalog.
Text only: the prompt describes everything. From an image: the image you send becomes the first frame. First and last frame: two images become the start and the end of the video.
No. Buy a credit pack by card, or in reais with Pix from Brazil, and spend it on FLUX 3 Video and every other model with the same key.
No. The Cut.Pro key calls FLUX 3 Video without a Black Forest Labs account, with one balance for every model in the catalog.
Yes. With a CPF or CNPJ and full address in your billing details, the nota fiscal is issued after each payment is confirmed.

Still missing one? Help center

Generate with FLUX 3 Video today

Create a key, get a free quote and pay only for what you generate.

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