Open weight families, by what the repository states
Each family is read from its own repository. The licence, the parameter count and the hardware note come from files anyone can download or from the model card beside them. As of 2026-09-12.
A repository is a more reliable source than a launch post, and a worse one than most people expect. Model cards omit hardware requirements routinely, quote a parameter count without saying which variant it belongs to, and carry a licence file that governs the weights but not the outputs.
The register reads what is in the repository and stops. Where a card gives no VRAM figure, the entry records the absence rather than a community estimate, because an estimate that came from a forum thread cannot be traced when it turns out to be wrong.
The most consistent finding across the families is the gap between released and sold. The weights a vendor publishes are usually an earlier generation than the version behind its own hosted service, and the repository rarely mentions that.
1The families
- Wan — Which Wan versions the vendor publishes weights for, under what licence, on what hardware, and which version the hosted services sell instead.
- LTX-Video — The LTX-Video weights published under Apache 2.0, the variants released for lower VRAM, and the version sold only through the API.
- HunyuanVideo — The licence, model size, stated hardware and resolution HunyuanVideo publishes in its own repository, with the date each was read.
- CogVideoX — The licence, model size, stated hardware and resolution CogVideoX publishes in its own repository, with the date each was read.
- Mochi 1 — The licence, model size, stated hardware and resolution Mochi 1 publishes in its own repository, with the date each was read.
A family enters the register when weights are downloadable and a licence file travels with them.
Also in the register: Hosted, Questions, Learn, Data. What a release has to publish is set out on the reading page.