Use Flux 3.0 video online: text, frames and extend
Flux 3.0 by Black Forest Labs, inside Kreavo's Create Video: write a prompt, start from a first frame (and a last frame), or extend a video you already made. Clips of 5 to 20 seconds with sound, in HD (720p) or Full HD (1080p), billed per second: $0.30 in HD, $0.45 in Full HD.
150 free credits for images · no card · video with the $2 trial
Quick answer
Flux 3.0 on Kreavo costs $1.50 to $9.00 per clip ($0.30 to $0.45 per second), for any length from 5 to 20 seconds at 720p or 1080p, with sound generated in the same pass. A 5-second 720p clip costs $1.50. Extending a finished video costs $0.40 per second in HD and $0.50 in Full HD, for 5 to 15 seconds of new footage.
- Price
- $1.50 to $9.00 per clip; $1.50 for a 5-second 720p clip
- Per second
- $0.30 at 720p, $0.45 at 1080p
- Length
- Any length from 5 to 20 seconds
- Resolution
- 720p or 1080p
- Audio
- Yes, sound is generated with the video
- Generation time
- Not published yet: fewer than 20 completed jobs on Kreavo in the last 60 days
- Inputs
- Text only, a first frame, or a first and a last frame
- Extend
- $0.40 per second in HD, $0.50 in Full HD, 5 to 15 seconds of new footage ($2.00 to $7.50)
- Aspect ratios
- 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 or Auto
- Access
- Video needs a paid plan or the $2 trial (7 days, every video model, 200 credits), which then becomes the Starter plan at $12/month unless you cancel. Customers who have paid once can also buy credit packs (1,000 credits for $10, valid 3 months) and pay for Video Studio videos with them, without a plan.
Prices come from the formula that bills each generation, updated November 9, 2026. Full data: model price index.
Need the clip in 1080p or 4K? Upscale it with Kreavo Upscale.
How to use Flux 3.0 on Kreavo
Select Flux 3.0
Open Create Video in the Kreavo studio and choose Flux 3.0 in the model list. It runs on the same credit balance as every other model.
Text or frames
Write the prompt alone, or add a first frame to set where the clip starts. A last frame is optional and needs a first frame.
Set length, quality and format
Any length from 5 to 20 seconds, HD (720p) or Full HD (1080p), in 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 or Auto. The price on the Generate button is seconds × the per-second rate.
Extend when you need more
On a finished video of your history, click Extend, choose 5 to 15 seconds and describe what happens next.
What Flux 3.0 video does
Flux 3.0 is a video model by Black Forest Labs, the team behind the Flux image models. On Kreavo it makes clips of 5 to 20 seconds with sound generated in the same pass, from a text prompt, from a first frame, or from a first and a last frame. It also continues videos: pick a finished video in your Create Video history, from Flux 3.0 or from any other model, and Flux 3.0 adds 5 to 15 seconds that pick up where it ends. The extension is a new video in your history; the original stays as it is.
Ready to try it? Open Create Video
- Text-to-video and image-to-video (first frame, optional last frame)
- Any length from 5 to 20 seconds, one-second steps
- HD (720p) or Full HD (1080p)
- Sound generated with the video on every clip
- Extend a finished video by 5 to 15 seconds
- Aspect ratios 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 or Auto
Flux 3.0 pricing on Kreavo
Prices are in credits, shown in dollars at 1 credit = $0.01, the price of the smallest credit pack ($10 for 1,000 credits). Bigger packs and monthly plans cost the same or less per credit. Flux 3.0 is billed per second of video: $0.30 in HD and $0.45 in Full HD. A clip costs between $1.50 (5 seconds in HD) and $9.00 (20 seconds in Full HD); the default 5-second 720p clip is $1.50. The credits are taken by our server when the video starts, at the price shown on the Generate button, and given back automatically if the generation fails.
Every video and image model, priced the same way: the AI model price index
| Duration | HD (720p) | Full HD (1080p) |
|---|---|---|
| 5 s | $1.50 | $2.25 |
| 8 s | $2.40 | $3.60 |
| 10 s | $3.00 | $4.50 |
| 12 s | $3.60 | $5.40 |
| 15 s | $4.50 | $6.75 |
| 20 s | $6.00 | $9.00 |
Extend a video with Flux 3.0
An extension is billed per second you ask for: $0.40 in HD and $0.50 in Full HD, 5 to 15 seconds per extension (every extension of our tests came back at the length asked for). It keeps the look of the video it continues: Full HD for a source of 1080p or more, HD otherwise, and the source's format when Flux 3.0 offers it (Auto if not). The extension holds the new seconds only, so place it right after the original clip in your editor. An extension can itself be extended: our test chained an 18-second clip and two 15-second extensions.
Extend is on the finished videos of Create Video
| New footage | HD (720p) | Full HD (1080p) |
|---|---|---|
| 5 s | $2.00 | $2.50 |
| 10 s | $4.00 | $5.00 |
| 15 s | $6.00 | $7.50 |
What the $2 trial and a credit pack buy
The $2 trial adds 200 credits: up to 6 seconds at 720p, not enough for the shortest 1080p clip (5 seconds, $2.25). After a first payment, a credit pack (1,000 credits for $10, valid 3 months) covers up to 33 seconds at 720p or up to 22 seconds at 1080p.
What the trial includes, model by model: the $2 trial for AI UGC
Flux 3.0 or another model on Kreavo?
Pick Flux 3.0 to control the first and last frame, to keep a shot going with Extend, or for 20-second clips with sound. Flux 3.0 takes frames, not a set of reference photos: to place the same product or AI influencer from several reference images, Kling 4.0 is built for it. For a single clip of 30 seconds, Kling 4.0, Seedance 2.5, Wan 3.0 or Grok Imagine go that far. To edit footage you already have rather than continue it, Kreavo offers Seedance 2.5 Edit and Wan 3.0 Edit.
Every model's price per second and render time: AI video generation cost and speed index
Limits to know
Other video models on Kreavo: all AI models and prices
- Maximum resolution is Full HD (1080p)
- No reference images: a first frame and an optional last frame only, and a last frame needs a first frame
- An extension adds 5 to 15 seconds and takes no images: it continues the video only
- Price grows with length and resolution: $1.50 for 5 seconds in HD, $9.00 for 20 seconds in Full HD
- Render time: 5.3 to 5.8 minutes for each of our 5 HD test clips of 15 to 18 seconds; the median on Kreavo is published once enough customer videos are done
Flux 3.0 frames from our tests
Unedited frames of two HD (720p) clips made on November 6, 2026: a clip started from a first frame, then its extension. Stills only, re-encoded for the web; the clips have sound.
Flux 3.0 · First frame to video · HD (720p) · 18 s
Last frame of an 18-second clip started from a first frame ($5.40 on Kreavo)
Flux 3.0 · Extend · HD (720p) · 15 s
Last frame of a 15-second extension of that clip ($6.00 on Kreavo)
What to make with Flux 3.0
Product clips from a still
Start from a product photo as the first frame and describe the motion and the sound. Add a last frame to choose exactly where the shot lands, for example the product on its packshot background.
Longer shots without a cut
Generate up to 20 seconds in one clip, then extend it by 5 to 15 seconds more when the scene needs to keep going.
A second life for clips you already made
Finished videos of your Create Video history, from any model, can be extended with Flux 3.0: the new seconds pick up where that video ends.
One idea, several formats
Pick 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 or Auto, so the same idea can be made for TikTok, Reels and Shorts (9:16), feeds (1:1, 3:4) and YouTube or banners (16:9, 21:9).
Flux 3.0 on Kreavo vs the official route
Dollar prices use 1 credit = $0.01, the smallest pack ($10 for 1,000 credits). Bigger packs and monthly plans cost the same or less per credit.