Sim currently tracks 18 Anthropic models including Claude Fable 5.1, Claude Fable 5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Opus 5.5, Claude Opus 5, and more.
Claude Sonnet 5.5 is the default Anthropic model in Sim.
Claude Haiku 5.5 currently has the lowest listed input price at $0.1/1M tokens.
Claude Fable 5.1 currently has the largest listed context window at 1M tokens.
All Anthropic models in Sim support tool use and function calling, allowing agents to invoke external APIs, query databases, and run custom actions.
