OpenAI Just Killed Claude (GPT-5-Codex is INSANE)

About this video

• Video Title: OpenAI Just Killed Claude (GPT-5-Codex is INSANE)
• Channel: Robin Ebers
• Speakers: Robin Ebers
• Duration: 00:11:46

Overview

This video introduces OpenAI's new AI coding model, GPT-5 Codex, highlighting its advanced features and comparing it to other AI models. The speaker discusses its capabilities in writing, debugging, and architecting code, emphasizing its large context window and dynamic thinking abilities. The video also covers potential pitfalls and provides advice on how to effectively use GPT-5 Codex for optimal results.

Key takeaways

• GPT-5 Codex is a powerful new AI coding model from OpenAI: It has demonstrated superior performance in coding tasks, outperforming other models like Claude and standard GPT-5 variants.
• Breakthrough Features: GPT-5 Codex boasts a significantly larger context window (potentially 750,000 to 1 million tokens) allowing it to understand entire applications, and a dynamic thinking capability that adjusts its processing time based on task complexity.
• Performance and Testing: The speaker shares personal testing experiences, including successfully implementing a complex feature in a production app with minimal issues. Comparisons with other AI models showed GPT-5 Codex generating code that required no fixes.
• Potential Drawbacks: Users need to be specific with prompts to avoid excessively long thinking sessions. Tool-calling capabilities might be weaker than in standard GPT-5, and the model can become "lazy" when nearing its context window limits.
• Recommendations for Use: To maximize benefits, it's advised to use the CLI version for full features, start with the medium effort model, and be extremely specific with prompts, breaking down large tasks into smaller steps.