How to Use AI to Stress-Test Your Startup Idea Before You Build It

Startup founders are using ChatGPT, Claude and other AI tools not to validate their ideas, but to attack them.

OpenAI's updated GPT-5.5 Instant is better at shopping, complex constraints, and understanding user intent — and it's already in the API

OpenAI is moving away from models that require heavy hand-holding and toward systems that can better infer the user’s goal, ...