In this episode, I share my hands-on experience with OpenAI’s GPT-5, the company’s new frontier model. As one of the first users outside of OpenAI to test the model, I put GPT-5 head-to-head with GPT-4.1 across real-world product use cases—from writing PRDs to generating code to assisting with visual design work. This is my unfiltered look at what GPT-5 can (and can’t) do—and how it changes the game for builders.

What you’ll learn:

1. How GPT-5 differs from previous models with its engineering-focused approach to problem-solving and tendency to prioritize technical details over business context

2. A comparative analysis of how GPT-5 and GPT-4.1 generate different types of product requirement documents and prototypes for the same prompt

3. Why GPT-5 excels at technical writing, functional requirements, and code generation while potentially skipping important business discovery questions

4. The model’s impressive spatial awareness capabilities when generating images for interior design and other visual tasks

5. Practical considerations for choosing the right model based on your specific use case and audience

6. How GPT-5’s extensive tool-calling behavior and bullet-point communication style reflect its engineering-oriented design

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Brought to you by ChatPRD—an AI copilot for PMs and their teams: https://www.chatprd.ai/howiai

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25k giveaway:

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