Summary
Highlights
The video introduces the Codex app as an essential tool for those using ChatGPT, highlighting that merely using ChatGPT is no longer sufficient in the era of AI agents. Codex is presented as an easy-to-use application that allows users to operate their own AI agent, enabling it to perform tasks rather than just answer questions. It's an application for your PC (Mac or Windows) that can be downloaded and installed quickly.
The Codex app boasts several powerful features: GPT-4.5 for advanced AI capabilities, GPT Image 2 for state-of-the-art image generation, Computer Use for AI to control your PC and its software (like Photoshop or video editing tools), a Memory function that remembers your preferences and tasks, an integrated browser, and over 90 plugins for extensive customization. All these features are available without additional charges beyond a ChatGPT Plus subscription.
The main distinction between Codex and the standard ChatGPT app is that while ChatGPT primarily answers questions, Codex executes commands and tasks. This 'agent-like' capability is what makes Codex revolutionary. Users subscribed to ChatGPT Plus are encouraged to use Codex to fully leverage their subscription, as it unlocks the full potential of AI interaction without extra fees.
GPT Image 2 is highlighted as a 'super powerful' image generation AI, capable of creating high-quality images up to 4K resolution, supporting Japanese text, and offering multi-turn editing. The Computer Use feature allows AI to interact with your PC's screen, clicks, typing, and applications, making it possible for AI to operate software like Figma, Excel, web apps, or browsers in the background, freeing up the user for other tasks.
The Memory function enables Codex to learn and store your preferences, work procedures, and settings, eliminating the need to repeatedly explain tasks from scratch. This allows for seamless continuation of work. The integrated browser is another significant advantage, allowing users to review and modify web-based creations directly within the Codex app, streamlining workflows.
Codex supports over 90 plugins, allowing integration with external tools like GitHub, Slack, Google Drive, and Stripe. This extensive connectivity transforms Codex into a versatile AI agent, moving beyond its initial perception as a coding-specific tool. The setup is straightforward—simply installing the app—making it accessible to a broad audience.
Codex's pricing aligns with ChatGPT's plans, with a free tier for light tasks and a Plus plan (which the speaker recommends starting with) offering comprehensive access to features like GPT-4.5 and GPT Image 2. For heavy daily use, a higher-tier 'Pro' plan might be necessary. The installation process involves three easy steps: downloading the app from the provided link, signing in with your ChatGPT account, and starting to experiment with various tasks.
A common point of confusion is mistaking Codex for the ChatGPT mobile app; they are distinct. Users should also be aware of usage limits (5-hour daily and weekly caps). While initially perceived as an engineer's tool, Codex is highly beneficial for non-engineers due to its intuitive interface and broad capabilities. Examples of use cases include creating thumbnails, debugging web apps, generating landing pages, conducting research, and operating Mac applications.
The speaker concludes by reiterating that Codex is a crucial AI agent and execution tool that dramatically enhances AI interaction. Users are strongly encouraged to download and try it, emphasizing that hands-on experience is key to mastering AI. A special offer is made for a detailed PDF guide for Codex, available by adding the official LINE account and sending the keyword 'コード' (kodo). Furthermore, a free 7-day AI course and premium listener benefits are promoted.