There were rumors about OpenAI preparing for sign in with OpenAI to let users use their OpenAI allowances with apps, si this is basically it. The question is, how long before OpenAI bans this or makes it official.
Sign in with OpenAI will be nice. That being said, I feel like it might be difficult/not open to use for casual devs. Hopefully OAI leaves this up, as they've allowed it for OpenCode. https://x.com/opencode/status/2009805930377167233
This is a way to let users use the Codex-app to Codex-model interface that the 20$ subscription uses so that other apps can use the OpenAI API without paying per token.
What you are describing is SSO with OpenAI as an identity provider
I believe the goal of their "SSO with OpenAI" was to allow people to use ChatGPT-adjacent services on 3rd party websites with their OpenAI account after signing in. So similar in result, different in execution I suppose.
