MiniMax H3 · Model overview

MiniMax H3 specs, hardware reality and every guide

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MiniMax H3, released as Hailuo 3.0 on July 31, 2026, is the model behind the Lightloom generator. This page collects what it actually is, its published limits, what running it yourself really takes, and the five guides that cover the parts the release notes skip.

If you arrived through a faster-than-real-time demo, start with the H3 Max name and speed breakdown before comparing it with this open-weight base model.

Looking for the public show rather than the model? The Infinite Slop explainer separates its shared chat queue, continuous playback loop and retail cost illustration from the H3 models underneath.

What MiniMax H3 does differently

MiniMax H3 is an omni-modal model: text, images, video and audio share one context, and picture and sound come out of a single forward pass rather than being stitched together afterwards. That is why the audio lines up with the action — and why leaving the audio block out of your prompt doesn’t give you silence, it gives you a soundtrack the model picked.

It is also why MiniMax H3 is heavier to run than a video-only model of the same nominal size. The audio branch is not free, and neither is the 9-image reference path that makes the third generation mode work.

It also changes what a good prompt looks like: the sound is a field you write, not an afterthought. If you would rather start from footage than from a blank box, turning a video back into a prompt returns the soundscape as its own section, alongside the shots and cut times.

MiniMax H3 specifications

Published limits, not measurements — this site has no first-party benchmark hardware, so nothing here is a timing claim.

MiniMax H3 published output specifications
Maximum resolution2K
Frame rate24fps
Maximum duration15 seconds per generation
Resolution cap768px short edge, capped at 768×1344
AudioNative stereo, generated with the picture
Reference inputs9 images, 3 videos, 3 audio clips
ReleasedJuly 31, 2026

Source: docs.comfy.org / MiniMax release notes.

Hosted MiniMax H3 vs. running it locally

MiniMax H3 weights are downloadable, so running it yourself is a real option — it is just a much larger commitment than the download page suggests.

The Lightloom hosted workflow compared with running MiniMax H3 on your own GPU
Lightloom hosted T2VMiniMax H3 on your GPU
HardwareRemote MiniMax H3 API execution; no local GPU required.MiniMax's own configuration calls for 4 GPUs. Community GGUF builds start at 8.49GB of weights before overhead.
SetupGoogle sign-in and a paid credit balance; no model download.ComfyUI 0.30.0 or later, plus four model files placed across three folders.
OutputText-to-video at 768P or 2K, 4–15 seconds, with native audio.Same model, same ceiling — if your card can hold it at that resolution.
Cost200 credits/second at 768P or 300 credits/second at 2K. No subscription; new accounts start with a one-time welcome credit grant.No per-clip cost, once you own hardware that can run it.
ControlText-to-video is available; image and multimodal reference inputs remain guide-only until secure uploads ship.Full node graph: samplers, sigma shift, LoRAs, quantization.

Why most people can’t run MiniMax H3 locally

Community GGUF builds of MiniMax H3 go as small as 8.49GB, and every roundup on the internet quotes that number as the requirement. It is not one. A weight file is not a VRAM figure — the VAE, text encoder, latents and the audio branch all allocate on top of it, and peak usage climbs with resolution and duration. The MiniMax H3 VRAM breakdown has every quant level against the card it actually fits, with the overhead nobody lists. If you do have the hardware, the MiniMax H3 ComfyUI workflow guide walks through all three official templates and what breaks on older versions.

If you do run MiniMax H3 yourself

Two things decide whether a local install is pleasant or painful. The first is that the text encoder is a 32B model — usually larger than the generation model people sized their card against, which the MiniMax H3 local setup guide covers file by file. The second is sampling time: the MiniMax H3 turbo LoRA cuts the roughly 20-step base workflow to a current 6–8-step starting range. Four steps remains a documented minimum, where audio artifacts are more likely and quality needs closer checking.

What the hosted workflow changes

Lightloom sends an allowed text prompt to the official MiniMax H3 V2 API, so local VRAM and ComfyUI versions are not part of the user workflow. The service reserves credits before submission, stores completed clips in its own Cloudflare bucket and returns the reservation if the task fails. Lightloom is independent and is not affiliated with MiniMax.

Prompting is the one part you still own either way — the MiniMax H3 prompt guide documents the official three-field format with copy-paste examples that load straight into the generator.

Try it hosted — no GPU needed →See exact credit pricing

MiniMax H3 guides

Running MiniMax H3 on your own hardware is where most people get stuck. These cover the parts the release notes skip — what actually allocates VRAM, how low-step Turbo settings affect audio, and which of the 15 model files you really need.

Frequently asked questions

MiniMax H3 (also called Hailuo 3.0) is an omni-modal generation model released on July 31, 2026. It understands text, images, video and audio in a single context and generates video with native stereo sound at up to 2K resolution, 24fps, and about 15 seconds per clip.

Yes. Hailuo 3.0 is the product name MiniMax uses for the same release; technical documentation and community tooling mostly say MiniMax H3, while the official app and announcement use Hailuo. Specs, license and API refer to one model.

Up to 2K at 24fps, with the short edge capped at 768px and an overall cap of 768×1344. Requests above that get clamped back down, so pick an aspect ratio inside the cap and upscale afterwards if you need more.

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