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codex-chatgpt-web vs OmniRoute

Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.

codex-chatgpt-web

Open source · MIT

Lets Codex use your signed-in ChatGPT Web models (including Pro) as its model, without using Codex quota.

OmniRoute

Open source · MIT

A free, MIT-licensed gateway that routes one API endpoint to many AI model providers.

The short answer

Choose codex-chatgpt-web if you need…

  • Developers who already pay for ChatGPT and want to use its web models inside Codex
  • People who want Codex's model picker to include ChatGPT Web models, including Pro versions where the account exposes them
  • Users comfortable running an unofficial browser-based integration on a trusted personal machine

Choose OmniRoute if you need…

  • Developers who use several AI coding tools and want one place to configure providers
  • People who want to connect their own free-tier provider accounts and spread requests across them
  • Users who want automatic fallback when one provider hits a rate limit
  • Teams experimenting with multiple models through a single OpenAI-style endpoint

Side-by-side

codex-chatgpt-webOmniRoute
TypeAppApp
PriceFree and open sourceFree and open source
LicenceMITMIT
GitHub stars15.4k83.8k
Setup difficultyIntermediateIntermediate
How you get itDownload the appInstall with a package manager
Main languageTypeScriptTypeScript
Last code update6 days ago4 days ago

What each one is

codex-chatgpt-web

This is a launcher app that connects Codex, a coding assistant, to the ChatGPT Web models available on your own ChatGPT account. Messages run through your signed-in ChatGPT web session, so they count against that account's ChatGPT limits rather than Codex quota. An optional Full harness mode uses MCP to let ChatGPT work with the current task's files, terminal, and tools, with approvals.

OmniRoute

OmniRoute is a self-hosted AI gateway: you point your AI coding tools at one endpoint, and it forwards requests to many model providers such as Claude, GPT, Gemini and DeepSeek. It can fall back to another provider when a quota runs out, and it advertises token compression to reduce usage. The README says it works with tools like Claude Code, Codex, Cursor and Cline.

Best for

codex-chatgpt-web

  • Developers who already pay for ChatGPT and want to use its web models inside Codex
  • People who want Codex's model picker to include ChatGPT Web models, including Pro versions where the account exposes them
  • Users comfortable running an unofficial browser-based integration on a trusted personal machine

OmniRoute

  • Developers who use several AI coding tools and want one place to configure providers
  • People who want to connect their own free-tier provider accounts and spread requests across them
  • Users who want automatic fallback when one provider hits a rate limit
  • Teams experimenting with multiple models through a single OpenAI-style endpoint

Strengths

codex-chatgpt-web

  • The README says the app includes its own browser and runtime, so no separate Chrome, Node, or Bun install is needed
  • Keeps the Codex interface, tasks, images, and streaming, per the README
  • Full harness connects through an outbound tunnel, so it does not open an inbound port or require router forwarding

OmniRoute

  • MIT licensed and open source, with a large GitHub star count
  • Single endpoint for many providers and models, as described in the README
  • Includes a dashboard and documented methodology for free-tier usage

Not ideal for

codex-chatgpt-web

  • Teams that need a supported, stable API: the README says this is unofficial browser automation, not an OpenAI API, and UI changes can break it
  • Anyone sharing a computer or unable to protect the launcher's login profile, since browser state is a sensitive login artifact
  • Users who need platforms beyond macOS 13+, Windows x64, and Linux x64, which are the documented release targets

OmniRoute

  • People who want a token grant or guaranteed free usage; the README says free tiers belong to third-party providers and their terms can change
  • Users who do not want to manage provider credentials and configuration
  • Those who need a hosted service with support guarantees; the README points mainly to community channels

Trade-offs

codex-chatgpt-web

  • Unofficial browser automation: selector or UI changes on ChatGPT's side can break it, and the README says drift fails explicitly rather than silently switching
  • Usage limits and context windows depend on your account type and selected effort, and are described in a linked discussion rather than fixed numbers
  • Builds are not yet platform-signed, so Gatekeeper or SmartScreen may show warnings

OmniRoute

  • Headline figures such as the token total are estimates that the README says change over time
  • Depends on third-party providers whose free tiers and terms can end or change
  • Compression savings and provider counts are the project's own claims, not independently verified here

Getting started

codex-chatgpt-web

macOS / Linux terminal install

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

Windows PowerShell install

irm https://github.com/miuuyy/codex-chatgpt-web/releases/latest/download/install-launcher.ps1 | iex
Step-by-step guide: how to use codex-chatgpt-web

OmniRoute

Clone the repository

git clone https://github.com/cheaper-inference/OmniRoute
Step-by-step guide: how to use OmniRoute

Frequently asked questions

What is the difference between codex-chatgpt-web and OmniRoute?

codex-chatgpt-web: Lets Codex use your signed-in ChatGPT Web models (including Pro) as its model, without using Codex quota. OmniRoute: A free, MIT-licensed gateway that routes one API endpoint to many AI model providers. codex-chatgpt-web suits developers who already pay for chatgpt and want to use its web models inside codex, while OmniRoute suits developers who use several ai coding tools and want one place to configure providers.

Are codex-chatgpt-web and OmniRoute free?

codex-chatgpt-web: Free and open source. OmniRoute: Free and open source.

Is codex-chatgpt-web or OmniRoute more popular?

OmniRoute has more GitHub stars (83.8k) than codex-chatgpt-web (15.4k). Popularity isn't the same as fit — check which one matches your use case above.

What are other alternatives to codex-chatgpt-web and OmniRoute?

Other options people compare them with include OpenHands, wechat-bot, CLIProxyAPI, DeepWiki, CC Switch.

Keep comparing

Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.