Closed sfx tools
1 in the catalogue today, and the list grows as the market does. Every one with what it costs, who sells it and where it stands.
Models that make a sound rather than music or speech: a door, rain, an engine, a room tone. They are bought by the clip, they are short, and the thing to check is whether the licence lets the sound into something you sell.
Models whose weights are not published and which are bought through somebody's API. You get the maker's infrastructure, their scale and their uptime, and no way to run the thing yourself or to keep it if it is withdrawn. Most of the strongest models are here, so this is less a choice than a fact about the market; the choice is which seller you buy the same model from, and the catalogue holds their prices side by side.