GPT-5.4 Review: 1M Context Window, Tool Search, and Native Computer Use

OpenAI dropped GPT-5.4 on March 5, and after spending three weeks putting it through its paces, I have thoughts. Lots of them. This isn’t just an incremental update — it’s a genuinely different experience from GPT-5.2, and in some ways, it changes what you can realistically expect from an AI model. So let me break … Read more