MiniMax H3 AI video: 2K video from a long brief
MiniMax's H3 video model — 768p or 2K output and the longest prompt field in LazyKiwi.
MiniMax H3 is the highest-resolution video model in the LazyKiwi workbench: it renders at 2K, where most of the lineup stops at 1080p. It also takes the longest prompt of any model here — 7,000 characters, enough for a full shot list plus a negative-prompt block — and runs all three generation modes: text-to-video, image-to-video and start-and-end-frame transitions. Clips run 4 to 15 seconds across six aspect ratios from 21:9 to 9:16. Specs: up to 768p or 2K.
- Provider
- MiniMax
- Resolution
- 768p / 2K
- Duration
- 4s – 15s
- Prompt limit
- 7,000 chars
How it works
Use MiniMax H3 in three steps
Open the LazyKiwi video workbench, pick MiniMax H3, and generate without leaving the page.
1Choose the model
Select MiniMax H3 in the model list. The workbench switches the quality pills to 768p and 2K and opens durations from 4s to 15s.
2Write the full brief
H3 accepts 7,000 characters. Use the room: describe the subject, the camera move, the lighting and the things to avoid, rather than compressing it into one sentence.
3Generate and download
Credits are charged per second — 82 at 768p, 131 at 2K — so a 5-second 2K clip costs 655 credits. Preview in the player and download the MP4.
Why MiniMax H3
What MiniMax H3 is built for
H3 is the resolution ceiling of the LazyKiwi video lineup. These are the capabilities the workbench actually exposes.
Resolution
2K output, the highest here
H3 is the only video model in LazyKiwi that renders above 1080p. 2K gives headroom to crop, reframe or push in during the edit without the result going soft, which matters when one generation has to serve several cuts.
- 768p and 2K quality steps
- Highest resolution of any LazyKiwi video model
- Room to crop and reframe in post
Prompt headroom
7,000 characters of direction
The largest prompt field in the workbench — more than three times Seedance 2.5 and seven times Veo's limit. Long briefs are how you hold identity, wardrobe and camera behaviour steady across a shot instead of hoping the model infers them.
- 7,000-character prompt limit
- Room for shot list, style and negatives
- Longest field of any model in LazyKiwi
Modes
Text, image, or a keyframe pair
All three workbench modes run on H3. Generate from a prompt alone, animate a single still, or supply a start and an end frame and let the model build the transition between them. Up to nine reference images per run.
- Text → video
- Image → video
- Start & end frame transitions
- Up to 9 reference images
Framing
21:9 cinematic through 9:16 vertical
Six aspect ratios: 21:9, 16:9, 4:3, 1:1, 3:4 and 9:16. The same brief can be re-run per platform — letterboxed for a site hero, square for a feed tile, vertical for Shorts and Reels.
- 21:9, 16:9, 4:3, 1:1, 3:4, 9:16
- One brief, re-run per platform
- Vertical and cinematic in the same model
Sample directions
Ideas to try with MiniMax H3
Start from these directions in LazyKiwi, then refine the brief to match your brand or story.
2K hero shot for a landing page
Portrait brought to life
Two-frame scene transition
Specs
MiniMax H3 at a glance
Capabilities as exposed through the LazyKiwi workbench. Upstream limits may differ.
- Provider
- MiniMax
- Type
- Video generation
- Modes
- Text→video, image→video, start & end frames
- Duration
- 4s to 15s, one-second steps
- Resolution
- 768p or 2K
- Aspect ratios
- 21:9, 16:9, 4:3, 1:1, 3:4, 9:16
- Reference images
- Up to 9
- Prompt limit
- 7,000 characters
- Credits
- 82 / s at 768p · 131 / s at 2K
- Best for
- High-resolution short clips, long structured briefs
When to use it
MiniMax H3 vs other LazyKiwi video models
H3 for resolution and prompt length, Hailuo for cheap image-to-video, Seedance 2.5 for longer cuts.
| Model | Strength | Best for | Speed |
|---|---|---|---|
| MiniMax H3 | 2K output and a 7,000-character prompt | Short clips that need resolution headroom and a detailed brief | Standard |
| Hailuo 2.3 Fast | Cheapest MiniMax option, image-to-video only | Animating a still quickly at low credit cost | Fast |
| Seedance 2.5 | Runs to 30 seconds | Longer cuts where 720p is enough | Standard |
Use cases
What creators build with MiniMax H3
Workflows where 2K output and a long brief change the result.
2K hero video
A site or product hero that still holds up when it is cropped for a different breakpoint.
Product close-ups
Resolution headroom for detail shots that get pushed into during the edit.
Character-consistent scenes
Use the long prompt field to pin identity, wardrobe and lighting across a shot.
Keyframe transitions
Supply a start and end image and let H3 build the move between them.
FAQ
MiniMax H3 FAQ
What is MiniMax H3?
MiniMax H3 is MiniMax's video generation model. In LazyKiwi it runs text-to-video, image-to-video and start-and-end-frame modes, producing 4 to 15 second clips at 768p or 2K across six aspect ratios.
How is MiniMax H3 different from Hailuo?
Both come from MiniMax. Hailuo 2.3 Fast in LazyKiwi is image-to-video only, capped at 1080p, and priced for volume. H3 adds text-to-video and start-and-end-frame modes, renders at 2K, and takes a much longer prompt.
Can I use MiniMax H3 for free?
New LazyKiwi accounts start with free credits, which covers a MiniMax H3 run. Generation is charged per second — 82 credits per second at 768p and 131 at 2K — so a 4-second 768p test costs 328 credits.
Is MiniMax H3 really 2K?
2K is the top quality step exposed in the workbench, and it is the highest of any video model in LazyKiwi. The other option is 768p, which costs roughly 37 percent less per second.
How long can a MiniMax H3 clip be?
15 seconds in a single run, at any second from 4 upward. For longer pieces, generate several clips and cut them together, or use Seedance 2.5, which runs to 30 seconds.
Try MiniMax H3 in LazyKiwi
Generate 2K video with MiniMax H3 in the same workspace as your other video and image models.
More models
Other video models available in the same workbench.
