Claude is a family of large language models and an assistant built by Anthropic, a research company founded in 2021 by former OpenAI employees. It is available in a web and mobile app and through an API.
How founders use it
Founders use it to draft and edit launch copy, summarize research, analyze documents and write code. Since Claude 3 in March 2024 the models come in three tiers: Haiku, the smallest and fastest, Sonnet, the mid sized one, and Opus, the largest. Claude Code, launched in February 2025, is a command line tool that can read and edit files, run commands and search the web. See Vibe coding.
Why it matters for visibility
AI assistants are now a place where people look for products, so being cited in their answers is a goal of Answer engine optimization and a form of Citation surface.
Alternatives
ChatGPT for a general assistant, and Cursor for an editor built around coding agents.
Related entries
See ChatGPT, Cursor, n8n and Answer engine optimization.
Claude is part of AI and automation.
Sources
IBM overview of Claude. Reviewed October 2026.
