Displayed prices use, in order: recent finalized-epoch results, then current miner offers, then SayGM's own list price. The "official price" is the maker's published rate, returned by SayGM's API.
Models ending in "TEE" run in a Trusted Execution Environment, confidential-computing hardware that isolates the model and your prompts from the machine's operator.
Docs and API keys on saygm.com; model and price list:
GET https://api.saygm.com/v1/models