Question 1

What can I make with FLUX 3?

Accepted Answer

Ad creative, music videos, storyboards, dialogue scenes, product films, and social clips. Anything that begins with a prompt and ends in a finished clip with sound. Generate a whole scene from text. Animate a still you already have. Lay out a set of keyframes and let the model move through them. Continue a clip you like for another twenty seconds. The picture and the audio come from the same model, so the sound already matches the shot.

Question 2

How do the images I attach change the clip?

Accepted Answer

The number of images decides the job. One image opens the clip and appears as the first frame, pixel for pixel. Two images set the first frame and the last, and FLUX 3 fills the time between them. Three to ten images work as a storyboard: the first starts the clip, the last ends it, and the rest fall evenly in between. Set a duration when you attach three or more, so the model knows how much time to give each beat.

Question 3

Can FLUX 3 continue a video I already have?

Accepted Answer

Yes. Attach a clip under Continue from and FLUX 3 picks it up from its final frames. Momentum, framing, and scene logic carry forward, so the new footage continues the shot instead of starting a new one. Chain the runs and a short clip grows into a long piece. The source clip must be an MP4 under 50 MB and 15 seconds. Attach images or a source video, not both. Continuing a video costs more per second than starting from a prompt or an image, so it is worth finding the direction in draft mode first.

Question 4

Does FLUX 3 make its own audio?

Accepted Answer

Yes, and it is on by default. Speech, effects, and ambience are generated with the frames, so the lip movement and the timing already line up. FLUX 3 handles several languages and accents. Write the sound into the prompt the way you write the picture: name the lines of dialogue, the room tone, and the effects you want. Turn Audio off for a silent clip.

Question 5

What is draft mode and when should I use it?

Accepted Answer

Draft mode returns a fast, low-cost preview of the same prompt at 720p. Use it to test a direction, a camera move, or a line of dialogue before you spend on the full render. When a draft is right, turn draft off and run the same inputs again at full quality. Draft renders at 720p whatever resolution you pick, so treat it as a sketch and not as a deliverable.

Question 6

What lengths, resolutions, and frame shapes does FLUX 3 support?

Accepted Answer

Clips run from five to twenty seconds in one generation. Resolutions are 720p and 1080p. Frame shapes run from 21:9 and 2:1 for wide cinematic work, through 16:9, 4:3, and 1:1, to 3:4 and 9:16 for TikTok, Reels, and Shorts. Leave Aspect on Auto and the model picks a shape from your prompt and your inputs. For a piece longer than twenty seconds, continue the clip and join the parts in an editor.

Question 7

How do I write prompts that work well with FLUX 3?

Accepted Answer

Name the subject, the action, the camera, the light, and the sound, in that order. Put dialogue in quotation marks and keep each line short enough to fit the length you chose. FLUX 3 cuts between several shots and camera angles on its own, so ask for one continuous shot when you want one, and name the cuts when you want them. For a look you already have, attach the image instead of describing it. Draft mode is the cheapest way to find out whether a prompt works, so write, draft, adjust, then render.

Question 8

How does FLUX 3 compare to Veo 3.1, Seedance, and Kling?

Accepted Answer

FLUX 3 is the one that takes a storyboard. Up to ten keyframes in order, a source video to continue, and audio in the same pass. Veo 3.1 leads on spoken delivery from a plain prompt. Seedance 2.5 takes thirty reference images and holds a cast across many shots. Kling 3.0 Omni scripts several shots in one clip and edits a reference video in place. FLUX 3 is the newest of the group and it still moves, so check a draft before you plan a shoot around it. Visual Sandbox runs all of them in the same composer, so you can draft on one model and finish on another.

Question 9

How much does a FLUX 3 video cost?

Accepted Answer

FLUX 3 is billed per second of output. 1080p costs more than 720p, and continuing a video costs more than starting from a prompt or an image. Draft mode renders at 720p and costs about a third of the standard 720p rate. The pricing table above shows every rate. Visual Sandbox shows the exact price before you generate, and charges per clip when the result is delivered. There is no subscription and no monthly minimum.

Question 10

Can I use FLUX 3 videos commercially?

Accepted Answer

Yes. FLUX 3 runs as a paid service, and Black Forest Labs' API terms put no non-commercial restriction on the video it returns. That is the path Visual Sandbox uses. The non-commercial licence people read about covers the open FLUX weights, which is a different product. You stay responsible for the prompt, the images you attach, and the final use, especially when the clip carries a likeness, a voice, a logo, or copyrighted material.

Tier	Details	Price
720p	Text or image input	$0.22/s
1080p	Text or image input	$0.37/s
720p	Draft	$0.08/s
720p	Continue a video	$0.52/s
1080p	Continue a video	$0.67/s
720p	Continue a video, draft	$0.15/s

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