openai codex ​

• In 2026, OpenAI launched its coding software

Installation ​

• Prerequisite: install Node.js ≥ 18 (LTS version recommended)

npm install -g @openai/codex
codex --version # Expected output similar to: codex-cli 0.121.0

npm install -g @openai/codex
codex --version # Expected output similar to: codex-cli 0.121.0

Configure Environment with cc switch ​

• Use cc switch to configure the environment for the codex CLI tool

• Download cc-switch

• macOS download Windows download

• Add a new provider

• Add a unified provider

• Fill in the unified provider details

  • Name is openai-hk
  • API URL is https://api.openai-hk.com
  • apiKey is hk-your-apiKey — get this key at https://www.openai-hk.com/v3/ai/key
  • Sub-keys can be created under the codex group; the exchange rate is 0.5, which is 0.072 of the official price (0.5/7)
  • Enable claude code openai codex gemini CLI
  • Configure models as shown below
  • Click Add

• Sync

  • Go back to Add New Provider and you will see openai-hk
  • Find "Sync to App"
  • Select Sync

• Enable

  • Return to the main screen, find codex -> openai-hk and click Enable

Running the App ​

• Command line

codex

codex

• VS Code extension