Introducing the Codex Micro

# Controlling Code with Voice and a Knob: Codex Micro Experience **TL;DR:** Codex Micro is a custom keyboard from Work Louder designed specifically for OpenAI Codex. It supports voice input, a knob to adjust reasoning effort, and a joystick to switch modes, letting you fully break free from your laptop keyboard and seamlessly jump between tasks. ## What is Codex Micro? Codex Micro is a dedicated keyboard built by the Work Louder team for Codex. The presenter admits: "Honestly, I can't live without it anymore." It elevates the Codex workflow to new heights. ## Live Demo: Building a Letter-Changing Game Without Touching the Keyboard To show off Micro's capabilities, the presenter calls GPT-5.6 Sol inside Codex, controlling everything through Micro to build a browser-based word game. ### Voice Input: Just Speak Your Code Hold down the voice key on Micro and speak directly to Codex: > "Create a browser game called 'Change One Letter' where players change one letter at a time to turn the word 'cold' into 'warm'. Add a 30-second countdown, a combo counter, and smooth block animations." The entire prompt appears in Codex, **without ever touching the laptop keyboard**. ### Joystick: One-Click Mode and Skill Navigation The joystick on top of Micro defaults to sliding up to enter "Plan Mode". You can also map the joystick to your most-used skills based on personal habits. ### Knob: Fine-Tune Reasoning Depth Using the knob, developers can adjust reasoning effort in real time — switching between quick tasks and deep reasoning without breaking their workflow. ### Multi-Task Management: One Key Per Task The presenter has Codex handle multiple tasks pinned to the taskbar, with each task corresponding to a key on Micro. - **Quick switching**: Click the corresponding key to jump between tasks. - **Status at a glance**: See which tasks are running and which need attention. - **Check background apps**: Double-click a key to see what needs work if the app is running in the background. - **Confirm actions**: When Codex requests to run an action, switch over, press accept, and quickly switch back. After switching back, press the voice key again to submit a new task: > "Make the win screen more exciting and add the combo counter." The presenter adds: "Jumping between tasks has never been easier." Plus, while waiting for Codex to finish, the joystick makes a nice little stress toy. ### Result: Game Is Live, Entirely Controlled by Micro The entire process of building, modifying, and launching the "Change One Letter" game was done through Codex Micro — without touching the laptop keyboard once. ## Fully Customizable All control keys on Codex Micro can be customized. You can map them to your most-used Codex actions, such as: - Common skills - Creating pull requests - Even "summoning my pet" ## How to Buy That's Codex Micro. Head to **openai.com/supply** to get your own edition. --- Source: Introducing the Codex Micro (https://www.youtube.com/watch?v=m8uUUUsMD3Y)