Unauthenticated Free Tier Chatgpt Access With Usage Quotas

via “authentication via chatgpt account with plan-based access control”

Codex is a coding agent that works with you everywhere you code — included in ChatGPT Plus, Pro, Business, Edu, and Enterprise plans.

Unique: Integrates authentication with ChatGPT's existing subscription model, eliminating the need for separate API key management and tying extension access to plan tier — simplifies onboarding for ChatGPT users

vs others: Simpler onboarding than GitHub Copilot (no separate API key) but less flexible because it cannot use alternative OpenAI accounts or custom API keys, and plan-based access is coarser-grained than token-based rate limiting