Topic · Company
Anthropic
Anthropic is the San Francisco company behind the Claude family of models, Claude Code and the Claude developer platform. It is organized as a public benefit corporation and presents AI safety research as central to its business, a claim this page tracks against what it actually ships and discloses.
Fact file
Registered address548 Market St, PMB 90375, San Francisco, CA 94104
Founded2021 (incorporation January 2021 reported by secondary sources; no official page states the date)
First public announcementMay 28, 2021 ($124M funding round)
First Claude releaseMarch 14, 2023 (Claude and Claude Instant)
MCP announcedNovember 25, 2024
MCP donated to Agentic AI Foundation (Linux Foundation)December 9, 2025
Current API models (Oct 8, 2026)Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, Claude Haiku 5.5
Products & related
Latest on Anthropic
Oct 9Developer tools · ExplainerModel routing explained: how to mix cheap, mid and frontier modelsOct 9Models · GuideWhich Claude model should you use? The current lineup and official pricesOct 9Developer tools · GuideBuild your first agent with the Claude Agent SDK (TypeScript, October 2026)Oct 9Business · ExplainerAnthropic explained: history, products and how it makes moneyOct 9Research · ExplainerHow to read a system card: a builder's guide to AI safety documentationOct 9Research · ExplainerContext windows vs memory vs RAG: what each one actually doesOct 9Agents · ExplainerWhat "agentic" really means in 2026Oct 9Agents · ExplainerWhat is MCP? The Model Context Protocol explained (2026 edition)
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Timeline
DEC 2025MCP donated to Agentic AI Foundation (Linux Foundation)
NOV 2024MCP announced
MAR 2023First Claude release
MAY 2021First public announcement