The Ethereum Foundation launched zkAPI on the Ethereum mainnet on October 1, 2026, to enable anonymous payments for AI models and metered APIs.

From the articleEthereum Foundation Rolls Out zkAPI for Anonymous AI Payments - BlockonomiAlso in Ethereum Foundation launches zkAPI to let users pay for AI models without revealing identity, Ethereum targets AI privacy with zkAPI for anonymous API payments - Cryptopolitan, Ethereum Foundation Launches Privacy Tool That Cuts the Link Between AI Prompts and Payers - Unchained