Internal sales employees at Anthropic were early users of Claude Code, using it to generate lead lists and call scripts, before transitioning to Co-work.

The Claude Co-work team at Anthropic stays close to user feedback through traditional UXR, internal dogfooding, a running Slack channel, and monitoring social media and passionate users.

Jenny Wen uses Claude Co-work for most of her design tasks at Anthropic, excluding very nitty-gritty production code work.

Anthropic integrated the Claude Code desktop app into the traditional Claude app, alongside Claude chat and Claude Co-work.

Anthropic started charging for API access in early 2023, reached a $1 billion run rate by the end of 2024, launched Claude Code in February 2025, reached $4 billion by mid-2025, $9 billion by end of 2025, and $30 billion by April 2026.

Anthropic has been using the Claude Mythos model internally since February 24th, 2026.