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MiniMax H3 video AI launch, financials, and H3 Max release

Updated 3 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-21 09:01 UTC → 2026-09-01 22:01 UTC · added ~~removed~~

MiniMax H3 video AI ~~launch~~ launch, financials, and ~~optimization~~ H3 Max release

In late July 2026, MiniMax Group announced the H3 multimodal video‑generation model. The system can produce 2K‑resolution clips up to 15 seconds long with native stereo audio, accepting text, images, video and audio in a single prompt. MiniMax offered API access at roughly $0.13 per second for 2K output and said the cost was less than a third of competing services. The company also said it would make the model weights publicly available under an open‑source licence in early August, allowing users with suitable hardware to run H3 locally. The launch came amid a copyright lawsuit against the platform underlying H3. A few days later, MiniMax provided additional technical details. H3 supports 768p or 2K resolution, can handle prompts up to 7,000 characters, and can incorporate up to nine images, three video clips and three audio files. It can generate videos from scratch, animate images, define start and end frames, or transfer motion between sequences. Independent testing placed H3 second in a text‑to‑audio‑video benchmark, behind Gemini Omni Flash. MiniMax positioned the model for advertising, e‑commerce, branding, product design, video games, film titles and animated posters, and reiterated plans to release it as a free open‑source offering. By mid-August 2026, technical efforts focused on hardware optimization. An inference engine was developed to optimize H3 performance on Mac computers using Apple Silicon, specifically targeting M3 Max and M5 Max chips. These optimizations utilize Metal 4 and TensorOps to increase computational efficiency and reduce inference time. The engine also includes native BF16 support for attention mechanisms and user controls like token reduction to balance video detail with generation speed. In late August 2026, MiniMax launched MiniMax Design, a professional production workflow that integrates H3 with specialized image, music, and voice models through executable nodes.

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