FLUX 3 Max vs MiniMax H3: Specs and When to Use Each

FLUX 3 Max vs MiniMax H3 is a choice between frame size and reference control. On VIDEO AI ME, FLUX 3 Max renders 720p or 1080p clips up to 20 seconds. MiniMax H3 Max renders 480p or 768p clips up to 15 seconds and takes up to nine reference images or three reference videos. Both generate sound.

Both models sit in the same video model picker in the VIDEO AI ME editor, and both draw on your plan credits, so you do not have to commit to one. What you need is a clear rule for which brief goes where. This comparison covers the specs, what a clip costs, where each model has the edge, and a test you can run on your own product before you spend a campaign budget.

FLUX 3 Max vs MiniMax H3: how do the specs compare?

Three rows carry the decision. FLUX 3 Max goes bigger and longer: 1080p and up to 20 seconds. MiniMax H3 Max goes wider on input: up to nine reference images or three reference videos in a single generation. Both return clips with generated audio, so neither needs a separate sound pass to be usable.

MiniMax's own H3 announcement describes the wider H3 family. What you select in the picker is H3 Max, at the specs in the table above, and those are the numbers to plan around.

On the FLUX 3 Max side, the editor offers 5, 8, 10, 12, 15 and 20 second durations, generated in one pass with no stitching, and aspect ratios of auto, 9:16, 16:9, 1:1, 4:3, 3:4 and 21:9. Auto renders 16:9 for text to video and follows your image for image to video.

Which costs less per clip, FLUX 3 Max or MiniMax H3?

FLUX 3 Max costs 17 credits per second at 720p and 29 credits per second at 1080p, for text to video and image to video alike. One credit is one cent of generation cost.

This article does not quote a per-second rate for MiniMax H3 Max. Check the current rate on the VIDEO AI ME pricing page before you plan a batch, then put it next to the FLUX 3 Max figures below.

On a plan, a ten second FLUX 3 Max clip at 720p fits 8 times into Starter's 1,400 credits, 32 times into Pro's 5,600 credits and 70 times into Premium's 12,000 credits. At 1080p the counts are 4, 19 and 41. The FLUX 3 Max pricing breakdown covers every duration.

A per-second rate is only half of cost per usable asset. The other half is how many takes it costs you to get a clip you would run. That depends on your brief, which is why the test later in this article matters more than any rate card.

What do its developers claim for FLUX 3 Max?

FLUX 3 Max is a post-trained variant of Black Forest Labs' FLUX 3 Video, which its developers describe as tuned for stronger prompt adherence and better visual quality, and optimized for lower latency. Treat those as the developers' claims and check them on your own product.

Prompt adherence is the one that matters most for ads. If it holds, the product, the action and the spoken line you wrote are more likely to be what you get back. FLUX 3 Max also reasons about your prompt and expands it before rendering, so a short prompt still produces a full shot, and anything you leave open is filled in for you. Write down every detail you care about.

When should you pick MiniMax H3 over FLUX 3 Max?

MiniMax H3 Max has clear wins in this pairing.

When the shot needs several references. Up to nine reference images means you can hand the model the creator, the product from two angles, the location and the outfit in one generation. FLUX 3 Max takes one image and uses it as the first frame, so it cannot hold that many separate inputs.

When the reference is a video. H3 Max accepts up to three reference videos. If you have footage of the movement, the setting or the pacing you want, that is an H3 Max job. FLUX 3 Max does not take reference video.

When the same product must appear across a series. Feeding the same set of product images into every clip of a campaign is a reference workflow. That is the brief H3 Max is set up for on VIDEO AI ME.

When 768p is enough for the placement. If the clip is a draft, an internal review cut or a placement where 768p meets the spec, you do not need a 1080p model for it.

The MiniMax H3 review covers the model on its own terms, and the guide to H3 at 480p and 768p explains when each resolution fits.

When should you pick FLUX 3 Max over MiniMax H3?

When the deliverable is 1080p. Of the two, FLUX 3 Max is the one that renders 1080p. If the client spec says 1080p, the choice is made.

When the clip runs 16 to 20 seconds. H3 Max stops at 15 seconds. FLUX 3 Max generates up to 20 in one pass, which is the room a full product beat with a spoken line and a reaction often needs.

When your input is one strong image. If you already have the hero product shot, image to video on FLUX 3 Max uses it as the first frame, and your prompt only has to describe motion and sound. The image carries the look.

When the brief is prompt-led. Text to video with no references is where the developers' prompt adherence claim is easiest to check, because every detail in the clip comes from what you wrote.

How do you test FLUX 3 Max against MiniMax H3 yourself?

Run the same brief on both before you commit. Keep everything identical except the model.

1. Pick a brief both models can do: 10 seconds, 9:16, text to video. That keeps references out of the test, so you compare the models rather than the inputs.
2. Write one prompt with four parts in this order: subject and action, camera, light and look, then sound.
3. Render it on FLUX 3 Max at 720p (170 credits) and on H3 Max at 768p.
4. Score both on the same checklist. Is the product right? Is the action what you wrote? Is the line spoken word for word? Does the sound sit on the action?
5. If your real brief is reference-led, run a second round on H3 Max with your reference images, since that is the mode where it has no counterpart on FLUX 3 Max.

A prompt for the first round:

A man in his thirties sets a small black espresso machine on a marble counter, presses the single button and watches the first shot pour into a clear glass cup. Locked-off medium shot at counter height, then a slow push-in on the cup. Soft morning light from a window behind him, warm natural grade. He says, "One button and I'm out the door." The hiss of the steam, the drip into the glass, a quiet kitchen hum, no music.

Ten seconds holds about 20 to 25 spoken words, so keep the line short. The FLUX 3 Max prompt guide goes deeper on each part of the structure.

Whichever model wins, watch the generated speech and lip sync before the clip goes live. Keep on-screen text and logos out of the prompt as well: small text and exact logos inside generated frames are unreliable on every video model, so add them after export, in your own editing tool.

What are the limits of FLUX 3 Max to plan around?

Can you use FLUX 3 Max and MiniMax H3 on the same campaign?

Yes, and splitting by job is usually the right call. Use H3 Max for the clips that depend on a set of references, such as the same creator and product across a series, and FLUX 3 Max for the 1080p hero clips and anything that needs 16 to 20 seconds in one take. Both render into the same project, so the cut, captions and export happen in one place.

Keep each clip to one scene and one idea. A three-scene ad is three clips joined in the editor, and each clip can come from whichever model fits that scene. Before you lock durations, check the creative specs for where the ad will run, starting with Meta for Business and TikTok for Business.

FLUX 3 Max vs MiniMax H3: which should you choose?

• Several reference images or a reference video: MiniMax H3 Max.
• 1080p delivery: FLUX 3 Max.
• 16 to 20 seconds in one generation: FLUX 3 Max.
• One strong product image to animate: either, so test both.
• Prompt-only text to video: either, so test both and score them on the same checklist.

For cost, use the FLUX 3 Max rates above and the live H3 Max rate on the pricing page, then divide by the number of takes each needed in your test.

Frequently Asked Questions

Is FLUX 3 Max better than MiniMax H3?

Neither wins on every line. On VIDEO AI ME, FLUX 3 Max renders 1080p and runs up to 20 seconds. MiniMax H3 Max takes up to nine reference images or three reference videos. Choose by the brief, then run the same prompt on both and compare the clips.

What resolution does MiniMax H3 Max output?

On VIDEO AI ME, MiniMax H3 Max renders at 480p or 768p. FLUX 3 Max renders at 720p or 1080p. If your placement or client spec needs 1080p, FLUX 3 Max is the one of the two that delivers it.

How long can MiniMax H3 videos be?

MiniMax H3 Max generates clips of 5 to 15 seconds on VIDEO AI ME. FLUX 3 Max generates 5 to 20 seconds in one pass. For anything longer on either model, generate separate scenes and join them in the editor.

How much does MiniMax H3 Max cost on VIDEO AI ME?

Check the live per-second rate on the VIDEO AI ME pricing page. For comparison, FLUX 3 Max costs 17 credits per second at 720p and 29 at 1080p, so a 10 second FLUX 3 Max clip is 170 credits at 720p and 290 at 1080p.

Do FLUX 3 Max and MiniMax H3 both generate sound?

Yes. Both return clips with generated audio. On FLUX 3 Max the audio is always on and covers ambience, effects, music and the spoken lines you write into the prompt. To replace it, swap in your own audio afterwards.

Which model is better for reference images?

MiniMax H3 Max. It accepts up to nine reference images or three reference videos in one generation. FLUX 3 Max takes a single image and uses it as the start frame, so multi-reference work belongs on H3 Max or Seedance 2.5.