❯ MiniMax Open-Sources 33B Video Model H3, Runs on a Single RTX 5090

CONSUMER BARMiniMax has put the weights of its 33-billion-parameter omni-modal video model H3 on Hugging Face, with the official description stating the model can generate videos up to 15 seconds, 2K resolution, 24 fps, and natively output 32kHz stereo audio — all runnable on a single RTX 5090. It was released a few hours apart from Alibaba’s Qwen3.8-Max on the same day, a collision Simon Willison specifically called out.

FINE PRINTThis version went live on July 31, and consumer-grade runnability comes with real trade-offs. Per official and community notes, ComfyUI offers day-one support, but the optimized stack totals about 40GB, fitting into a consumer GPU only through dynamic offloading between RAM and SSD; early benchmarks on a 5090 put generating 5 seconds of 768p-level footage at about 5.5 minutes. MiniMax’s video models were previously API-only, and this open-sourcing still comes with an asterisk: core pieces like context orchestration, 2K regeneration, and sparse attention remain server-side, so what arrives locally is not the full capability. The community license also restricts public use in the United States, the European Union, the United Kingdom, and South Korea, citing copyright litigation — an unusual clause for an open-weight model.

RECIPIENTSThe most concrete impact of the weight release lands on the cost structure of independent creators and small teams: short videos with sound used to require the API; now a single GPU plus one night of compute turns out a finished clip, paid for in waiting time. What gets squeezed are the per-second-billed video generation services — once the base capability runs locally, all the cloud has left to sell is speed, resolution, and those few un-open-sourced modules. For enterprise users, that regional restriction clause deserves a look from legal before the parameter count does.

▪ SIGNALThe weights are out, but half the capability stays server-side — “open source” is being taken apart piece by piece.