Opencodex

make codex open! Universal provider proxy for OpenAI Codex, Claude Code, Claude Desktop & Grok Build Two commands, and every one of them runs any LLM you point it at.

npm install -g @bitkyc08/opencodex
ocx start

Claude Code, running any model

The picker is stock Claude Code. The brain behind it isn't.

Codex, running any model

Pick a provider and go — same workflow, different brain.

Claude Desktop, running any model

Opus answers, then hands the task to a GPT-5.6 Sol subagent.

Grok Build, running any model

Sol drives the session and calls a Kimi K3 subagent.

English · Français · 한국어 · 简体中文 · 繁體中文 · Русский · 日本語 · Türkçe · 📖 Full documentation →

opencodex is a lightweight local proxy that translates Codex's Responses API into whatever your provider speaks — streaming, tool calls, reasoning tokens, images, in both directions. Use Claude, Gemini, Grok, GLM, DeepSeek, Kimi, Qwen, Ollama, or any other LLM with Codex, Claude Code, Claude Desktop, and Grok Build. It can also manage a ChatGPT account pool for Codex auth: add accounts, refresh their quotas in the dashboard, and let new sessions auto-route to the lowest-usage healthy account while existing threads stay pinned to the account that started them.

Quick start

Personal install (CLI)

npm install -g @bitkyc08/opencodex   # Node 18+; the Bun runtime is bundled automatically
ocx start                         # proxy + dashboard on localhost:10100

Use ocx service to run it in the background.

Open http://localhost:10100 and configure everything in the web dashboard — add providers (40+ built-ins, or any OpenAI-compatible endpoint), pick models, manage accounts. ocx gui re-opens the dashboard at any time.

Desktop app (beta)

The desktop app is the same proxy and dashboard in a native window, with a tray and bundled ocx. It attaches to a proxy that is already running, or starts its bundled one, and the dashboard stays on the proxy port (http://localhost:10100 unless you configured another). Pick the file for your platform from the latest release:

Platform	File	Notes
macOS 13+ (Apple Silicon and Intel)	OpenCodex-<version>-macos.dmg	Universal build, signed with a Developer ID and notarized
Windows (x64)	OpenCodex-<version>-windows-x64.msi	Not code-signed yet: SmartScreen asks once, choose More info → Run anyway
Linux (x86_64)	OpenCodex-<version>-linux-x86_64.AppImage or -linux-amd64.deb	The tray needs an AppIndicator-capable desktop