Anthropic Models

Overview of Anthropic’s latest Claude models with positioning, capabilities, and practical guidance.

Latest: Claude 4.5 Sonnet

Claude 4.5 Sonnet balances strong reasoning, tool use, and reliability with production‑friendly latency. It is appropriate for enterprise assistants, knowledge workflows, and tool‑calling scenarios where correctness and traceability matter.

Strengths

  • Reliable tool use and function calling
  • Long‑context understanding for documents
  • Balanced latency and output quality

Best For

  • Enterprise assistants and QA bots
  • Document analysis and synthesis
  • Multi‑step workflows with tool calls

Model Lineup

Claude 4.5 Sonnet

Latest balanced tier with improved reasoning and reliability.

Claude 3.5 Opus

High‑end reasoning with stronger depth for complex tasks.

Claude 3.5 Sonnet

Reliable and widely deployed; suited to production assistants.

Claude 3.5 Haiku

Low‑latency tier for cost‑efficient tasks with good reliability.

Practical Guidance

  • Use structured prompts and function schemas for consistent tool calls.
  • Prefer citation storage when summarizing documents for auditability.
  • Set sensible token caps and retry policies for long‑context tasks.