Codex Chatgpt Web

   

macOS Intel · All releases

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Get started · What’s new · Architecture · Troubleshooting

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. Keep the same interface, tasks, images, and streaming.

Full harness mode connects ChatGPT to the current task’s files, terminal, tools, and approvals through MCP. Conversations stay tied to your Codex task, so you can keep working as the context grows.

Get started

Available models: Free/Go → Luna / Think. Paid accounts → GPT-6 Sol and GPT-5.6 Sol, with Instant–High, plus Extra High and Pro when available. Each version has its own entry; existing GPT-5.6 chats keep GPT-5.6. Availability depends on your account and workspace.

1. Install the launcher using the download for your system above.
2. Sign in to ChatGPT in the embedded browser and run the browser smoke test.
3. Install models and restart Codex once. In automatic mode, choose a model ending in (Web). Pro versions have separate entries; Sol reasoning is selected through Effort. Zero Risk keeps its dedicated entry.
4. For coding with tools, open MCP in the launcher and complete the Full harness setup below.

The app includes its browser and runtime. No separate Chrome, Node, or Bun installation is needed.

Terminal install, updates & repair

Quit the launcher before updating. These installers select the platform and architecture, verify the published checksums, and preserve your ChatGPT profile and launcher settings.

macOS / Linux

curl -fsSL https://github.com/miuuyy/codex-chatgpt-web/releases/latest/download/install-launcher.sh | sh

Windows PowerShell

irm https://github.com/miuuyy/codex-chatgpt-web/releases/latest/download/install-launcher.ps1 | iex

Models, modes & MCP setup

Automatic modes offer Luna/Think when the account has no reasoning selector; otherwise Instant–High, with Extra High and Pro available independently when exposed by the account.

Mode	Sending messages	Local Codex tools
Browser-only	Automatic	No
Full harness (With Automation)	Automatic	Yes, through MCP
Zero Risk	Paste and send manually	Yes, through a separate MCP connector

Zero Risk does not read or operate the ChatGPT page. Choose the model and Codex Zero Risk connector yourself, paste and send the prepared prompt, then confirm Sent in the launcher. Automatic models ending in (Web) expose their supported Effort choices in Codex. Instant and each Pro version have separate entries to preserve their context budgets; older saved model entries keep their original fixed mode.

Full harness

Full mode connects ChatGPT's tool calls back to the current Codex task through the official OpenAI tunnel-client. The tunnel is outbound: it does not expose a public IP, open an inbound port, or require router forwarding.

The launcher uses your system proxy for the tunnel. Explicitly configured proxy environment variables take priority; local connections stay local.

The launcher's MCP page guides the complete setup. For the exact clicks, see the video walkthroughs.