Viggle’s own announcement, posted September 4, calls its new release “our first open-weight model.” The model card two clicks away tells a narrower story: the weights are a licensed derivative of MiniMax’s H3, and the license attached to them grants no rights in the United States, the European Union, the United Kingdom, or South Korea. Viggle didn’t write that clause. It inherited it — and didn’t mention it.
MiniMax wrote the restriction into H3’s own release on August 3: the Community License grants rights only within an “Applicable Territory” defined as worldwide minus those four jurisdictions, and any “Model Derivative” — a fine-tune, a distillation, anything trained on H3’s outputs — inherits the same territory limit by the license’s own terms. Viggle-Animate is a full fine-tune of H3’s video transformer, and its model card says so plainly: “the weights are a Model Derivative of MiniMax H3, so the MiniMax H3 Community License applies to them.” What the model card discloses, the X post announcing the model doesn’t.
This is RCTV’s open-weights claims tracker, first installment. It broadens a story we ran once already: in May, HappyHorse-1.0 claimed “fully open-sourced” while its GitHub org sat empty. HappyHorse’s commercial API launched 150 days before this page publishes, the weights still haven’t shipped — see the scoreboard below — and the same gap between marketing language and artifact reality keeps showing up under different vendor names. This page is where we’ll keep score going forward, the way the AI Video Stack tracks specs and pricing.
The scoreboard
Updated September 27, 2026: Video Rebirth’s HyperFlow added.
| Model | Claim | Verified reality | Verdict |
|---|---|---|---|
| HyperFlow (Video Rebirth) | “HyperFlow is now open source” — Sept. 24 announcement | An 8-step LoRA for MiniMax H3, not a standalone model; the model card ships it under H3’s Community License and states the EU, UK, South Korea and US exclusion in its opening lines. The announcement doesn’t mention it | Open, fine print inherited — on the card, not in the announcement |
| Viggle-Animate (Viggle) | “Our first open-weight model” — Sept. 4 announcement | Weights download freely, but the license is MiniMax H3’s Community License, inherited as a “Model Derivative” — same four excluded territories, undisclosed in the announcement | Open, fine print inherited and unstated |
| MiniMax H3 (MiniMax) | Open weights shipped Aug. 3, 2026, “within days” of the model’s launch | Weights and license both public; license itself states the US/EU/UK/South Korea exclusion, and the model card says the 2K upscaling module “is not yet open-sourced” | Open, fine print disclosed |
| MAGI-2 Preview (Sand.ai) | “The world’s first 100-billion-parameter MoE video generation model,” fully open source | Unmodified Apache 2.0 on the model card, no territory clause, no rider — checks out | Genuinely open |
| NVIDIA Cosmos 3 (NVIDIA) | Open-weights omnimodel, OpenMDW-1.1 license | Direct model-card fetch confirms “ready for commercial and non-commercial use,” Global deployment geography; the license text itself carries no territory clause; distribution only has to keep the license and the copyright notices | Genuinely open |
| Helios (PKU-YuanGroup / ByteDance / Canva) | Open-source, real-time long-video model | Apache 2.0 on the GitHub repo, no rider found | Genuinely open |
| HY-World 2.0 (Tencent Hunyuan) | Open-sourced 3D world model, weights and inference code on GitHub | Real repo, real weights — but its own Community License excludes the EU, UK and South Korea, and requires a separate license above 1 million monthly active users | Open, fine print in the license |
| HappyHorse-1.0 (Alibaba ATH) | “Fully open-sourced,” April 2026 marketing page | No repo under the vendor’s GitHub account (zero public repos); Hugging Face page still returns 401; a fan-made repo now titles itself “Full weights + commercial license” but holds only a README and no releases | Marketing claim, no artifact — 150 days and counting |
| Wan 2.7 (Alibaba) | None from Alibaba — Wan 2.7 launched April 3 through Model Studio and wan.video, and the open-weights reputation belongs to the 2.x line it extends | No Wan 2.7 weights on GitHub’s Wan-Video org, Hugging Face’s Wan-AI org, or ModelScope — checked directly against all three. The open line stops at Wan 2.2 | Not open, never claimed to be — a version number wearing its predecessor’s license |
| SkyReels V4 (Skywork AI) | Described since its February preview as the first open-source joint audio-video model; a request for the weights on Skywork’s own GitHub has sat unanswered since February 26 | No SkyReels-V4 repo anywhere in Skywork’s 38-repo GitHub org, no Hugging Face listing, and the free-tier site the preview pointed at is a dead deployment | Marketed as open, no artifact — HappyHorse’s gap, quieter |
The spectrum
Line these up and a pattern falls out. At one end: MAGI-2 Preview, NVIDIA Cosmos 3, and Helios ship exactly what they say — weights, unmodified permissive licenses, nothing held back. One step in: MiniMax H3 and HY-World 2.0 are open with real restrictions, but the restrictions are in the license text a reader can find. One more step in: Viggle-Animate is open with a restriction the vendor’s own announcement doesn’t carry. And at the far end, HappyHorse-1.0 and SkyReels V4 aren’t open at all; the label exists (a marketing page, launch coverage) and the artifact doesn’t — with Wan 2.7 beside them for a different reason. Nobody at Alibaba ever called it open. The version number did the work anyway.
Why this keeps happening
Two mechanisms are doing the work here, and they’re different problems. The first is derivative-license inheritance: once a lab publishes weights under a restrictive community license, anyone who fine-tunes those weights inherits the restriction whether they disclose it or not. MiniMax’s H3 has been built into at least seven outside releases since August — H3-World, the fal-hosted H3 Max variants, Viggle-Animate, and, on the day this page first published, Video Rebirth’s HyperFlow. Viggle was the first of them to carry the license’s fine print without saying so in its own announcement; HyperFlow is the second, though its model card, unlike Viggle’s announcement, puts the exclusion up front. As more labs build on each other’s open weights, this is the failure mode to expect more of, not less.
The second is simpler and has nothing to do with licenses: a label with no artifact behind it. SkyReels V4 has been described as open-source since its February preview, here included, and Skywork’s GitHub has never carried a V4 repo. Wan 2.7 is the same shape from the other direction — a closed release wearing an open line’s version number, which is how it spent five months labelled open on RCTV’s own reference page before the September 13 fix. Neither is a licensing question. Both are the same simple check — does the repo exist — and it is the check that gets skipped.
What to watch
The next entrant worth checking is whichever lab fine-tunes H3 or LTX-2.5 next; the license-inheritance pattern will keep repeating as long as the open-weights layer keeps growing on itself. NVIDIA’s Cosmos line carries a different kind of risk: NVIDIA’s pending acquisition of Hugging Face, still with no confirmed closing date anywhere primary, sits under every open-weight model this page tracks that hosts there. And this page itself is the test — the next update either finds a vendor correcting its own claim, or it doesn’t, and that absence will be as much the story as a correction would be.
This piece broadens the HappyHorse-1.0 open-source audit from a single-vendor story into a running scoreboard. HappyHorse’s own listing above is unchanged from that piece’s verdict — check back here rather than there for the current status.