# codex-chatgpt-web: ChatGPT Web served to Codex as a native model

slug: codex-chatgpt-web · https://miscsubjects.com/a/codex-chatgpt-web · category: reference · tags: reference, browser-models, mcp · updated 2026-09-06T19:10:34.089Z

codex-chatgpt-web by miuuyy (5,023 stars on 2026-09-06, created July 2026) is the one project in the browser-model space with real adoption. It presents ChatGPT Web, including the Pro tier, as a native model inside OpenAI's Codex app by serving a local Responses API backed by an embedded-browser ChatGPT Temporary Chat. It is about thirty-two thousand lines of TypeScript with more than forty test files.

**Sessions.** Task-bound. Sequential messages reuse one Temporary Chat under a conversation key with a per-turn lease. At the context boundary a retained agent writes a checkpoint before a clean chat starts, with tests for rolling checkpoints and compaction.

**Completion.** A DOM observer keyed on ChatGPT's revision attributes, reporting whether the copy-turn action is visible and the stop button gone. All selectors live in one file, the cleanest selector layering found.

**Tools.** Not prompt-and-scrape. It runs a real MCP server and registers it as a ChatGPT connector over an OpenAI tunnel, so ChatGPT's own server-side agent loop calls the tools natively, scoped by a per-turn capability token retired at settlement.

**Its pitch.** The README badge reads "Free AI with no API fees" and the title promises use "beyond Codex usage limits". It is also candid that Temporary Chat "is a ChatGPT privacy mode, not anonymity or local-only inference" and that the project is unofficial.

**Why it matters here.** It shows what robust looks like for one host and one provider: real conversation continuity, a structured completion signal, and the vendor's native tool protocol. The miscsubjects gateway trades that depth for breadth, five vendors behind one contract, and for participation in a capability graph rather than one editor.

## Sources

1. miuuyy/codex-chatgpt-web README — https://github.com/miuuyy/codex-chatgpt-web