The singular form, which suits a product rather than a service volume. One inference: the unit of work, the thing being optimised, measured, and billed.
Inference has become the operational centre of the AI business. The cost of running models in production determines margin, and an entire supply chain has formed around making it cheaper and faster: specialised hardware, quantisation, caching, batching, routing, and serving frameworks.
The name fits an inference platform, an optimisation tool, a serving framework, a benchmarking service, or a technical resource. For a developer-facing product the exact-term naming is an advantage, since engineers evaluating options search in precise vocabulary rather than in marketing language.
Twelve characters, two components, no hyphen, .com, and GPT now functions as generic shorthand for the model class rather than as a single product name, which broadens rather than limits the reading.
The name is available. Offers considered.