# GPT-5-Codex just beat them *all*

Source: https://www.youtube.com/watch?v=RLj9gKsGlzo
Recap page: https://rapidrecap.app/video/RLj9gKsGlzo
Generated: 2025-09-17T00:02:51.44+00:00

---
## Quick Overview

GPT-5-Codex is OpenAI's latest AI model, offering significantly faster and more reliable performance for coding tasks across various platforms and IDEs, improving collaboration and independent task execution. The model leverages GPT-5 for enhanced agentic coding, showing significant improvements in efficiency and accuracy, particularly in handling complex tasks and reducing token usage.

**Key Points:**
- GPT-5-Codex is released as a faster, more reliable, and better-performing AI model for agentic coding.
- The model is optimized for real-time collaboration and independent task execution, usable across terminals, IDEs, web, and mobile devices.
- GPT-5-Codex demonstrates significant efficiency gains, particularly in handling complex tasks and reducing token usage compared to previous models.
- It was tested to work independently for over 7 hours on large, complex tasks, successfully implementing solutions and fixing test failures.
- The model integrates seamlessly with existing ChatGPT accounts, allowing for context switching between local environments and the cloud.
- It is available via CLI and IDE extensions, with plans for broader integration.
- Testing shows it uses 93.7% fewer tokens than GPT-5 for bottom 10% of user turns and thinks twice as long for top 10% of tasks, indicating intelligent resource allocation.

![Screenshot at 00:15: The OpenAI website announces "Introducing upgrades to Codex", showcasing the improved capabilities of the new AI model with a clean, modern design.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-00-15.png)

**Context:** OpenAI has announced the release of GPT-5-Codex, an upgraded version of their AI coding assistant. This new iteration is built upon the GPT-5 architecture and aims to provide a more robust and efficient coding experience for developers. The announcement highlights improvements in speed, reliability, and collaborative capabilities, positioning GPT-5-Codex as a significant advancement in AI-powered software development tools.

## Detailed Analysis

OpenAI has unveiled GPT-5-Codex, a significant upgrade to its AI coding assistant, leveraging the power of GPT-5. This new model offers enhanced speed, reliability, and improved real-time collaboration features, allowing developers to tackle tasks independently across various environments like terminals, IDEs, web browsers, and mobile devices. Key improvements include faster performance on complex tasks and a notable reduction in token usage. During testing, GPT-5-Codex demonstrated sustained independent work for over seven hours on complex tasks, successfully implementing solutions and resolving test failures. The model seamlessly integrates with existing ChatGPT accounts, enabling smooth transitions between local and cloud development workflows. It is accessible through a Command Line Interface (CLI) and IDE extensions. Data indicates that GPT-5-Codex uses 93.7% fewer tokens than GPT-5 for less complex tasks, while dedicating more processing time to harder problems, suggesting an optimized approach to resource management. This advancement aims to make AI-assisted coding more accessible and efficient for a wider range of users, including those who may not be full-time developers.

### New Model Release

- GPT-5-Codex launched with enhanced speed, reliability, and collaboration features
- Optimized for agentic coding and independent task execution

### Performance Improvements

- Faster on complex tasks, reduced token usage by 93.7% compared to GPT-5
- Sustained independent work for over 7 hours on complex tasks

### Accessibility & Integration

- Available via CLI and IDE extensions
- Seamless integration with ChatGPT accounts for context switching

### Testing & Efficiency

- Model intelligently allocates resources, spending more time on complex problems
- Successfully implemented solutions and fixed test failures during testing

### User Benefits

- Makes AI-assisted coding more accessible and efficient for developers of all levels
- Allows for easier collaboration and task management across different environments

![Screenshot at 00:15: OpenAI website announces "Introducing upgrades to Codex", highlighting the model's speed and reliability.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-00-15.png)
![Screenshot at 00:41: Demonstration of the command line interface for installing and running Codex.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-00-41.png)
![Screenshot at 00:58: The OpenAI Codex CLI interface showing the model version \(v0.36.0\) and available commands.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-00-58.png)
![Screenshot at 01:04: A progress bar in the CLI indicating "613K tokens used" and "56% context left", showing operational metrics.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-01-04.png)
![Screenshot at 01:16: Text highlighting the availability of GPT-5-Codex everywhere a user uses Codex for cloud tasks and code review.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-01-16.png)
![Screenshot at 02:02: A bar chart comparing GPT-5 \(medium\) and GPT-5-Codex \(medium\) token usage across different percentiles.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-02-02.png)
![Screenshot at 03:22: A bar chart illustrating the difference in token usage between GPT-5 and GPT-5-Codex across various percentiles, showing significant reductions for Codex.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-03-22.png)
![Screenshot at 03:34: A tweet from Noam Brown stating GPT-5-Codex is 10x faster for easiest queries and 2x longer for hardest queries.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-03-34.png)
![Screenshot at 04:43: A meme with "IT IS BROKEN CAN YOU MAKE OUR SHIP GO?" illustrating a common developer problem.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-04-43.png)
![Screenshot at 05:50: A demonstration of the AI agent working within a code editor, showing its ability to analyze and suggest code changes.](https://ss.rapidrecap.app/screens/RLj9gKsGlzo/00-05-50.png)