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#29AI agents· launched Jan 2026

Claude Cowork

Anthropic's desktop agent that works on the files on your computer.

Visit claude.com

What it is

Cowork brings Claude Code's agent to non-programmers: give it a folder and it organises files, builds spreadsheets from screenshots or drafts reports from notes.

How it was built with AI

Anthropic's head of Claude Code, Boris Cherny, says "pretty much" all of Cowork's code was written with Claude Code, and the team built it in about a week and a half.

  • Claude Code

Traction

Press

Built in roughly a sprint and a half (about 1.5 weeks)

As of Jan 13, 2026. Reported by a named publication. Read the source

Sources

  1. Anthropic's Claude Cowork was built in under two weeks using Claude Code to write the codeThe Decoder · Jan 13, 2026 · checked Oct 20, 2026