Article
Claude Platform 101
Anthropic Courses
- • Claude Fable is our most capable model yet — a new tier that sits above Opus, built for your toughest challenges. It comes at a significantly higher cost than Opus, so reserve it for work where that extra capability is worth paying for. • Claude Opus is the most capable of the three core model families, but also the slowest and highest cost of the three. Use it for deep reasoning, complex analysis, multi-step coding, and nuanced writing. • Claude Haiku is the fastest and lowest cost, optimized for speed and cost efficiency rather than maximum intelligence. Use it for high-volume, low-complexity work like classification, extraction, and routing. • Claude Sonnet sits in the sweet spot: a balanced combination of intelligence, speed, and cost that works well for most production work.
- the right model is the cheapest one whose output you’d actually ship
- Choosing the right model Take an operations dashboard with a document processing route: • Every incoming file gets classified with Haiku. • Client updates get drafted with Sonnet. • Only RFP responses reach for Opus. One queue, three models, picked per task.