Study · Claude Course

Claude Models

The Claude family trades intelligence against speed/cost: **Opus** (highest intelligence, complex multi-step reasoning; costlier/slower), **Sonnet** (balanced, strong at coding/precise edits — the best default), **Haiku** (fastest/cheapest, no deep reasoning — real-time/high-volume).

type conceptstatus activeclaude · models · anthropic

Key points

  • Selection rule: intelligence → Opus, speed → Haiku, balanced → Sonnet.
  • Common pattern: mix models per task within one app (e.g. Haiku to generate eval data, Opus to grade).
  • All share text/coding/image capabilities.
Anthropic-API-Basics

Sources

  • 2026-06-28-claude-course
Compiled from wiki/study/claude-course/Claude-Models.md · git is the source of truth