The plural names the category rather than a single product, which is the right shape for a directory, a comparison site, or a publication covering the space.
Model aggregation has become structural to how AI systems are built. Routing between providers, ensembling outputs, managing fallbacks, and comparing cost and quality across vendors. Almost no serious system runs on a single model, and the layer that manages this is a fast-growing category with several funded entrants.
The name fits a comparison and evaluation resource, a directory of gateway and routing products, an industry publication, or a benchmarking service. Buyers evaluating this layer have a genuine information problem, since the products differ in ways that only become apparent in production.
Two words, sixteen characters, no hyphen, .com, and both halves are standard technical vocabulary. The plural signals an overview rather than a vendor, which is the more defensible position.
The name is available. Offers welcome.