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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.

81 stories · updated Oct 9

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Key facts

Checked Oct 8

Legal form: Public benefit corporation (Anthropic PBC)
Registered address: 548 Market St, PMB 90375, San Francisco, CA 94104
Founded: 2021 (incorporation January 2021 reported by secondary sources; no official page states the date)
First public announcement: May 28, 2021 ($124M funding round)
First Claude release: March 14, 2023 (Claude and Claude Instant)
MCP announced: November 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: Claude apps, Claude Platform (API), Claude Code, Claude Agent SDK

Latest on Anthropic

Agents · ExplainerWhat is MCP? The Model Context Protocol explained (2026 edition)MCP is the open standard that lets AI apps plug into tools and data. Here's how it works, who governs it, what changed in the stateless 2026-07-28 spec, and where the risks are.Oct 9·9 min read

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