Anthropic Claude is a family of large language models (LLMs) designed for natural language understanding, reasoning, coding, and content generation. Available as a consumer chat app (claude.ai), a developer API, and an enterprise platform, Claude’s model tiers — Haiku (fastest), Sonnet (balanced), and Opus (most capable) — each carry distinct Claude pricing that reflects their capability level, with multiple generations available across each tier. As of May 2026, the current recommended models are Claude Opus 4.8 (launched May 28, 2026), Claude Sonnet 4.6, and Claude Haiku 4.5.