The zkAPI protocol does not provide network-level anonymity, meaning gateway operators can still see IP addresses and metadata, and providers can re-link sessions through prompt content.

From the articleEthereum Foundation launches zkAPI to let users pay for AI models without revealing identityAlso in Ethereum Foundation Launches Privacy Tool That Cuts the Link Between AI Prompts and Payers - Unchained, Ethereum Foundation Rolls Out zkAPI for Anonymous AI Payments - Blockonomi