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FLUX 3 AI Video Generator

FLUX 3 turns one prompt or photo into a 20-second scene people stop scrolling for, dialogue and sound built in: the model Reddit calls closest to Sora 2.

Up to 20 secondsSound in the same passFailed runs refunded

FLUX 3 AI Video Generator

640 creditsSign in to run this one
Strictly prohibits adult / NSFW content
More models

More AI models next to FLUX 3

Every model below runs on the same credit balance, so one prompt can meet a rival in two clicks.

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Examples

FLUX 3 videos creators posted

The clips creators are posting right now, each with the model named. Two of their exact prompts sit further down, ready to run.

A cat facing a galaxy

How creators work

Prompt FLUX 3 the way its best clips were written

The creators whose clips travel furthest write prompts the same four ways:

01

Put the camera inside the scene

Write "from a small boat", not "of a small boat". A camera that lives the moment gets you phone-POV realism instead of a stock shot.

02

Time the turn

Name the moment things change: "At the 2-second mark, the bike begins losing power." Then give the final beat its own line.

03

Write the sound in

Spoken lines go in quotes with the voice described first; add the room around them and say "no music" when you want it bare.

04

Match the length to the action

Choose 5, 10, 15 or 20 seconds and give every second a job: a setup, a turn, a final beat. The credit cost updates on screen as you pick.

Access

Run FLUX 3 online, no GPU and no waitlist

FLUX 3 is the multimodal video model from Black Forest Labs, the team behind FLUX image models. It writes picture and soundtrack together in one pass, up to 20 seconds long. The first thing Reddit asked was whether a home GPU could even hold it. On Kavel you skip that question: the model runs on our side and the finished clip lands in your browser.

A rider tracked down an empty desert road until the engine dies at the two-second mark he wrote into the prompt. Posted by @LudovicCreator, made with FLUX 3.

Creative engine

FLUX 3 on Kavel

5–20 s
Per run
720p · 1080p
Your pick
With audio
Same pass

Text or a photo in

Describe the scene, or upload one still and bring it to life.

A clip with sound out

Voices, effects and room tone arrive with the video, at 720p or 1080p.

The price before you press

The credit cost shows on screen before anything is charged.

What people post about

Three things FLUX 3 does that made Reddit stop scrolling

FLUX 3 dialogue, effects and ambience in one run

Black Forest Labs built the model to generate the audio alongside the video: dialogue with lip-sync in 13 languages, sound effects and ambience. We ran it on Kavel with one spoken line in the prompt, and the grill, the rain and the vendor's voice came back in the same file.

  • Write the line in any of 13 languages, in quotes, with the voice described first
  • List the sounds you want: sizzle, rain on an awning, traffic
  • Say "no music" when you want only the voice and the room

Twenty seconds and several shots from one FLUX 3 prompt

Several shots can cut inside one run. This basement rant runs the full twenty: a cat in a tie, a wall of red string, a vacuum hose waved like evidence.

  • Pick the length on the duration row: 5, 10, 15 or 20 seconds
  • Describe each shot in the order it should play
  • Give the last shot its own sentence so the clip lands

FLUX 3 image to video from one still

Upload one photo and the model keeps its shape while the prompt drives the motion. Black Forest Labs' own blind tests put FLUX 3 level with Seedance 2.0 in image-to-video. Here a single frame of white cubes grows into branching paths around a walking figure.

  • Start from a clean, sharp still with room for motion
  • Describe what moves, not what the image already shows
  • Leave the aspect ratio alone: the clip follows your photo
Prompts

FLUX 3 prompts you can copy

The creators' own prompts, word for word, beside the clip each one made. Copy one, change the subject, run it.

A gallery losing gravity

@LudovicCreator

Lock the camera in a slow 360-degree roll, keep the subject frozen in the centre and let the room come apart around him.

Camera locked in a slow 360-degree roll around a grieving curator standing alone in a museum gallery as the room appears to tilt, rotate, and lose gravity around them. Framed portraits drift off the walls, marble busts slide along the floor then up the ceiling, exhibit labels float like torn thoughts, spotlights swing in slow arcs, and a security guard remains strangely calm by the doorway. 24mm wide lens, controlled rotation, surreal practical movement, subject nearly frozen in the center. Emotional collapse made physical dizzying, theatrical, impossible.
Run this prompt

A boat flipped by a wave

@seeksteve

Shoot from the boat, not of it, chain each event to the one before, and name the sound: panicked yelling, gurgling water, no music.

First-person shaky phone POV from a small boat when a freak massive wave rises and crashes over the vessel, flipping it. The camera is extremely reactive, tumbling with the boat as it rolls. Real physics: the wave's weight overwhelms the hull, water floods in, the deck goes vertical and the boat capsizes, gear washing overboard. No hands or phone visible. Panicked yelling, gurgling water, no music. Violent, real, survival panic.
Run this prompt
What people say

What Reddit said once FLUX 3 went live

Creators are calling FLUX 3 “rock solid”, “years ahead” and “the closest model” to Sora 2. Their replies, quoted as written, each linked.

“

From what I’ve tested, the quality of Flux 3 is rock solid, better than H3

U
u/Crazy-Repeat-2006
r/StableDiffusion
Compared

FLUX 3 vs MiniMax H3, Seedance 2.0, LTX 2.5 and Sora 2

The rivals people test it against most, and where it wins.

FLUX 3 vs MiniMax H3

The side-by-side threads keep landing on the same verdict: its picture is the better one. On Kavel both run on the same balance, so you can send one prompt to each and judge for yourself.

“Flux visuals are better”

See MiniMax H3

FLUX 3 vs Seedance 2.0

In Black Forest Labs' own blind evaluation, FLUX 3 tied Seedance 2.0 in image-to-video and topped the text-to-video rankings outright.

See Seedance 2.0

FLUX 3 vs LTX 2.5

A tester who put it up against LTX on the same text prompt called the gap "night and day", and it holds a scene for up to 20 seconds with its sound built in.

“Flux 3 early access, definitely a big step above that, looks like Sora 2”

See LTX 2.5

FLUX 3 vs Sora 2

OpenAI shut the Sora app in April and its API in September. The model r/SoraAi keeps holding up against Sora 2 is FLUX 3, and it runs here today.

“he’s undoubtedly the closest model.”

Run FLUX 3 now
FAQ

FLUX 3 FAQ

What people ask most in the Reddit threads.

FLUX 3 is the multimodal video model from Black Forest Labs. From one prompt or one image it generates up to 20 seconds of video with dialogue, effects and ambience made in the same pass.

Right here. Pick FLUX 3 in the Kavel video generator, type a scene or upload a photo, and the clip plays in your browser. No waitlist, no install.

You can start free: log in and Kavel adds free credits, no card, for Kavel's own video engine. This model runs on any paid plan or credit pack, with the cost shown before you generate.

Black Forest Labs has said open weights will come as FLUX 3 Dev, a separate release from the video model on its API. On Kavel the full video model runs on our side, straight from your browser.

It is priced by length and resolution, sound included: 640 credits for a 5-second clip at 720p, 1,090 at 1080p, and the exact cost shows before you generate. Failed runs are refunded automatically, unless the prompt broke the content policy.

Up to 20 seconds per run. Choose 5, 10, 15 or 20 seconds, and ask for several shots inside one clip.

For the picture, the head-to-head threads mostly say yes: sharper, more natural footage. Both models run on Kavel, so the fastest answer is one prompt sent to each.

It is the model r/SoraAi compares with Sora 2 most, and it runs today while Sora is gone. Like Sora 2, it makes the picture and the sound together.

Yes. Upload one still and the clip keeps its aspect ratio while your prompt drives the motion and the sound.

Make your first FLUX 3 clip

Paste a proven prompt or your own scene and leave with up to 20 seconds of video and its soundtrack, from 640 credits, with the exact cost on screen before you press. If a run errors on our side, the credits go straight back.