Pi supports OpenAI login for ChatGPT subscriptions.
Every 3rd party open-source harness I know of supports ChatGPT subscriptions.
Every 3rd party open-source harness I know of supports ChatGPT subscriptions.
It isn’t explicitly allowed in OAI’s TOS, however they publicly support Pi and OpenCode’s usage of their Oauth, and because Codex is open-source, it means the machinery to support Oauth login is open-source under Apache 2.0