# Anthropic's engineering and product heads explain how Claude is used to ship Claude

> Original title: How Anthropic ships Claude with Claude

- Source: Latent.Space
- Published: 2026-10-27T18:58:01.000Z
- Bad Influence: https://badinfluence.news/items/ulmhyu7au0ew370v5a1ybcblx
- Original: https://x.com/latentspacepod/status/2115156080309489736

## Summary

Latent Space announces a behind-the-scenes interview with Anthropic's heads of engineering and product, Katelyn Lesse and Ang Jiang, about the launch of Opus 5.5. The post says the platform is used to build first-party tools such as Code, Tag, and Duet, and is used by more than 50% of Anthropic's top customers.

## Post

How Anthropic ships Claude with Claude

https://latent.space/p/opus55/

Opus 5.5 is the #1 LLM in the world right now. We go behind the scenes of the launch, with @katelyn_lesse and @angjiang, heads of Eng and Product behind the platform used to build everything from the first party harnesses like Code/Tag/Duet and by >50% of Anthropic's top customers!