Codex Desktop App + Free GPT-5.2 Codex (Tested): Is OpenAI now copying Conductor,Commander?

Codeex App Review: A Detailed Analysis

Key Concepts:

• Codeex: OpenAI’s AI coding assistant, previously available via terminal and VS Code extension, now with a dedicated Mac OS app.
• Agentic UI: A user interface designed for AI agents, allowing for task management, skill integration, and workspace organization.
• Work Trees: A method of organizing code changes and experiments, used by both Conductor and Codeex.
• Rate Limits: Restrictions on the number of requests a user can make to the AI model within a given timeframe.
• Sandbox: A secure, isolated environment for running commands, preventing unintended system changes.
• Diff Viewing: Displaying the differences between two versions of a file, useful for reviewing code changes.

1. Introduction & Initial Impressions

OpenAI has released a dedicated Mac OS application for Codeex, aiming to provide a more user-friendly experience than the previous terminal and VS Code extension versions. The app is described as feeling “native” to Mac OS, suggesting improved performance (“super snappy”). A free trial is available for one month, with subscribers receiving double the standard rate limits. The app introduces features like skill installation and task scheduling for automated execution. The UI design draws clear inspiration from Conductor, another AI coding tool, utilizing a similar thread-based structure with work trees.

2. Features & Functionality

The Codeex app features three main tabs: Threads, Skills, and Automations.

• Threads: The primary workspace for interacting with Codeex, organized around “threads” which contain “work trees” for managing code changes.
• Skills: Allows users to install pre-defined skills to enhance Codeex’s capabilities. Custom skill installation is possible but requires manual configuration within the Codeex config folder, a process described as “not very ideal.”
• Automations: Enables users to create scheduled tasks, specifying a name, project, prompt, and schedule (either specific time or intervals).

3. Technical Issues & Quirks

The reviewer encountered several technical issues during testing:

• Model Selection: The app inexplicably restricts model selection to GPT-5.2 Codeex Medium, with no error message when attempting to choose other models.
• Cloud Mode Behavior: Using “cloud mode” unexpectedly overrides the selected project and defaults to the repository specified in the bottom right corner of the interface, a design choice criticized as confusing.
• UI Glitches: The UI exhibits visual bugs, particularly when navigating to the Skills tab, where the background disappears and elements overflow the screen. Padding inconsistencies throughout the app contribute to a “vibecoded” (buggy, unfinished) feel.
• Contextual Awareness: Initially, Codeex failed to recognize the context of files within the opened project folder, requiring app restarts and config file deletion to resolve.

4. UI/UX Concerns & Comparisons

The reviewer highlights several UI/UX issues:

• Plan Mode Access: Enabling “plan mode” is counterintuitively accessed via the plus icon, typically used for file attachments. This design flaw was previously noted in the VS Code interface.
• File Opening Behavior: Clicking a file name unexpectedly opens it in a new VS Code instance, potentially leading to performance issues due to VS Code’s memory consumption.
• Terminal Customization: The app lacks the ability to customize the terminal font, despite allowing UI-wide font changes.
• Comparison to Conductor: The app’s structure closely resembles Conductor, with work trees and threads, but lacks the same level of polish and functionality.

5. Performance & Capabilities

Despite the UI issues, Codeex offers several useful features:

• Diff Viewing: The diff viewing experience for code changes is considered “quite good.”
• Commit & Push: Users can commit and push changes to repositories directly from the app.
• Voice Input: The app supports voice-activated prompts.
• Sandboxed Execution: Commands are executed within a sandbox environment for security.

6. Comparison to Verdant

The reviewer contrasts Codeex with Verdant, another agentic UI tool, praising Verdant’s superior design and performance. Verdant is described as excelling in creating workspaces, managing skills, and running multiple tasks with minimal memory usage. The reviewer expresses surprise that OpenAI, a large company, has not been able to create an agentic interface as effective as Verdant. As stated, “The best one in terms of an agentic UI is probably Verdant. They really nailed it all quite well.”

7. Data & Statistics

• Rate Limit Increase: Subscribers to Codeex receive a 2x increase in rate limits.
• Company Size: OpenAI is referred to as a “trillion dollar company,” highlighting the expectation for a more polished product.

8. Conclusion

The Codeex app represents a step towards a more accessible Codeex experience, but is currently hampered by technical issues, UI/UX flaws, and a lack of polish. While the core functionality is present, the app feels unfinished and falls short of the quality expected from OpenAI. Despite these shortcomings, the reviewer acknowledges the app’s potential and encourages viewers to share their thoughts and feedback. The app is “pretty cool” overall, but needs significant improvements to compete with alternatives like Verdant.