Claude 3.7 Sonnet just dropped with extended thinking mode. Architecture runs internal reasoning chains before responding - literally watching it think through problems step-by-step like GPT-o1 but with Anthropic's safety rails.
Key difference: You can see the thinking process in real-time through the API. Costs 3x more tokens since you're paying for both the reasoning and the output, but benchmark improvements are solid for math, coding, and multi-step logic.
Best use case: Complex debugging sessions where you need the model to actually reason through edge cases instead of pattern-matching from training data. The thinking tokens add up fast though - budget accordingly.
Key difference: You can see the thinking process in real-time through the API. Costs 3x more tokens since you're paying for both the reasoning and the output, but benchmark improvements are solid for math, coding, and multi-step logic.
Best use case: Complex debugging sessions where you need the model to actually reason through edge cases instead of pattern-matching from training data. The thinking tokens add up fast though - budget accordingly.