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.
Install the launcher using the download for your system above.
Sign in to ChatGPT in the embedded browser and run the browser smoke test.
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.
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
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's MCP page guides the complete setup. For the exact clicks, see the
video walkthroughs.
Limits
See Limits for the current
ChatGPT message allowances for GPT-5.6 Sol Pro and GPT-6 Astra. Context limits depend on
the account type and selected effort. Plus Medium/High uses a measured 90,000-token window.
GPT-5.6 supports up to 270,000 tokens with experimental 3× context enabled, with native
Codex compaction supported throughout.
GPT-6 Sol supports Bigger Context at Medium, High and available Extra High: 120,000 tokens
on Plus, with compaction at 110,000, and 240,000 on Pro, with compaction at 220,000.
GPT-6 Instant uses standard context.
GPT-5.6 and GPT-6 Pro keep their existing Bigger Context limits.
Finish the required setup, open MCP, create the Tunnel and regular API key, then press
Connect harness.
Enable ChatGPT Developer Mode and create a new Tunnel connector named exactly
Codex Native2, with Authentication: None and Allow all actions.
Run Verify runtime to confirm that Codex Native2 is attached and available.
Write/modify actions also require the ChatGPT workspace and its administrator policy to permit
them. See
developer mode and MCP apps.
Unexpected approval prompts fail closed unless --auto-approve-tool-calls is explicitly enabled;
that option clicks Allow once, never a permanent grant.
Diagnostics & subagents
Use Activity for safe local diagnostics and Settings → Run doctor for end-to-end health.
Settings can also cancel a retained browser turn or remove the Codex integration before uninstall.
Save chats in ChatGPT keeps task conversations in ChatGPT history. Off by default; independent of New browser chat for each turn.
Set CODEX_CHATGPT_WEB_BROWSER_DIAGNOSTICS=1 only when every browser checkpoint needs a screenshot.
New installs use Compatibility V1 for cross-backend subagents. Native preserves Codex's own
feature settings and enables plaintext Web-to-Web V2 delegation. Restart Codex and start a new task
after changing the protocol:
codex-chatgpt-web subagents status
codex-chatgpt-web subagents compatibility-v1
codex-chatgpt-web subagents native
Requirements & security
This is unofficial browser automation, not an OpenAI API. ChatGPT UI changes can break selectors;
drift fails explicitly instead of silently switching model or transport.
Browser state is a sensitive login artifact, and the loopback listener is reachable by processes
running as the same local user. Never share the launcher profile; use a trusted workstation.
Release packages currently target macOS 13+ (arm64/x64), Windows x64, and Linux x64. Runtime,
tests, and packaging are gated on all three in CI; account-bound browser and MCP flows use the
separate release validation.
Builds are not yet platform-signed, so Gatekeeper or SmartScreen may warn. The installers verify
the published SHA-256 manifest before installation.
This is independent software and is not affiliated with or endorsed by OpenAI. Use it only with
your own account and in accordance with applicable Terms of Use
and workspace policies; it does not bypass authentication or access controls.
Run from source & develop
git clone https://github.com/miuuyy/codex-chatgpt-web.git && \
cd codex-chatgpt-web && \
bun run app
This source path requires Bun 1.4.0. The command installs locked dependencies and opens the app.
bun run app
bun run dev:launcher
bun run src/cli.ts dev status
bun run dev:chat compaction-lab "Reply with exactly: DEV READY"
bun run verify
bun run smoke:subagents
bun run app:package
dev:launcher uses a separate profile and account under ~/.codex-chatgpt-web-dev. dev:chat exercises the real browser and compaction paths with explicit simulated tool results, without changing your normal Codex route. See the DEV chat harness for setup and commands.
这是一个桌面启动器，让 Codex 能把 ChatGPT Web（包括 Pro）当作原生模型使用。它通过基于浏览器的 ChatGPT 临时对话（Temporary Chat）传递任务上下文、图片、工具和流式输出，而不是调用 Codex API。