Claude Haiku vs Sonnet vs Opus: Which One Should You Actually Use? (2026)

Anthropic's Claude model lineup—Haiku, Sonnet, and Opus—offers different trade-offs between speed, cost, and capability. The article provides a straightforward rule for choosing among them based on task requirements.

I stared at Anthropic’s model list way longer than I’d like to admit. Here’s the simple rule I wish someone had just told me. Continue reading on Towards AI »