Katelyn Lesse
Head of Engineering, Claude Platform
All companies 
Anthropic
1 conversation across 1 show.
Meet the people behind the company.
Latest conversation · In The Blink Of AI
Learn how to use AI at its exponential with Anthropic's Head of Platform EngineeringAbout Anthropic
Anthropic is a San Francisco AI safety and research company, set up as a public benefit corporation. It builds large language models and the Claude family of AI assistants, used by individuals, developers and businesses through apps and an API. Its research covers interpretability, alignment and the safety of frontier AI systems. Former OpenAI researchers, including Dario and Daniela Amodei, founded it in 2021.
- Sector
- Artificial intelligence
- Business model
- B2B SaaS / API
- Founded
- 2021
- Headquarters
- San Francisco, US
- Offices
- San Francisco, California
- Latest round
- Series H at US$965B valuation (May 2026)
Sources: en.wikipedia.org
The people on Day One.
Hear from the team.
Milestones.
- Founded by ex-OpenAI researchers led by the Amodeisen.wikipedia.org
- Released Claude and Claude Instanten.wikipedia.org
- Amazon committed up to US$4B investmenten.wikipedia.org
- Launched Claude 3 model familyen.wikipedia.org
In conversation.
Moments from other conversations on the network where Anthropic comes up.
“in a world where some other company using OpenAI or Anthropic models does something similar, I think it's going to be very hard to attribute who's actually at fault and who's responsible.”
“somebody shared the like pull request that Anthropic recently acquired Bun.”
“it was this incredible piece of research that I think Anthropic released where they were kind of looking at the neural network and how the model lights up.”
“OpenAI, Anthropic, and other frontier labs will begin moving up the stack, increasingly shifting their strategic focus to building applications.”
More companies on Day One.
Spot something wrong? Suggest a correctionUpdated 29 October 2026
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