Claude Models 2026: Complete Guide to Anthropic's AI Lineup and Comparison (Opus 4.8, Sonnet 4.5 & Haiku 4)
If you have been following the AI space this year, you know Anthropic has been shipping at an incredible pace. As of June 2026, Claude has grown far beyond just another chatbot. It is a full platform with multiple model tiers, each designed for different kinds of work. Whether you are a developer trying to pick the right API model, a business leader evaluating enterprise AI, or just someone who wants to understand what Claude can actually do, this guide covers every current Claude model with real specs, pricing, and practical advice. The Current Claude Lineup Anthropic currently offers four model tiers, and the naming tells you everything about where each fits. Haiku is the fast one. Sonnet is the everyday workhorse. Opus is the heavy lifter. And Fable 5, released just this month, sits in a class of its own. Claude Fable 5 Released June 9, 2026, Fable 5 is Anthropic's most capable model ever. It is a Mythos-class system, which means it was built for the kind of work wh...