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How To Use Your ChatGPT Subscription And Avoid Paying API Costs With OpenAI Codex
Desktop launcher allowing you to use ChatGPT Web models with OpenAI’s Codex CLI without using up any of your Codex API quota.
This is an unofficial desktop launcher for ChatGPT Web, which allows you to use ChatGPT Web models with OpenAI’s Codex CLI (a coding assistant CLI) without using up any of your Codex API quota. When you choose a ChatGPT Web model in Codex, the request will be made using your regular ChatGPT subscription instead of using up your Codex API quota. From the README: “Use the ChatGPT Web models available on your account, including Pro, from Codex’s native model picker—with ChatGPT Web’s separate usage limits, without spending your Work or Codex quota.” Depending on your subscription plan, you can use Luna and/or Think (Free/Go), Instant to High (accounts with reasoning controls), and Extra High and Pro (when available). It also has full harness mode which integrates ChatGPT with the current task’s files, terminal, and tools via MCP, keeping the conversation contextualized to the Codex task. It comes with its own browser and runtime, meaning you don’t need to install Chrome, Node, or Bun. Works on macOS 13+, Windows x64, and Linux x64.
Why a vibe-coder should care
If you’re someone who uses both Codex and a ChatGPT subscription, this saves you from having to pay twice! Separate usage limits prevent ChatGPT Web prompts from affecting your Codex API quota.
How to install
Copy this and send it to your agent — Claude Code, Codex, any of them:
Install the ChatGPT Web launcher for Codex from https://github.com/miuuyy/codex-chatgpt-web — download the right installer for my system, follow the README, launch the app and sign me into ChatGPT in the embedded browser, then add the models to Codex; ask if you need help with any step.
Runs on a regular laptop — macOS 13 or later, Windows, or Linux; nothing extra to install.
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