
Reasoning Models Don't Always Reason Better: When Extended Thinking Helps — and When It Costs You More
OpenAI's o3, Claude 3.7 Sonnet's extended thinking, and DeepSeek R1 made "slow, deliberate AI reasoning" mainstream. But running a reasoning model on every task is like hiring a PhD to answer yes/no questions. Here's a practical framework for when extended thinking actually moves the needle — and when it just burns tokens.










