Why Anthropic's co-founder left OpenAI

Lenny's PodcastAbout 2 min readJul 30, 2025Watch original
THE SUMMARYAI-generated

Key Concepts:

  • AGI (Artificial General Intelligence): A hypothetical level of AI that possesses human-level cognitive abilities.
  • Safety Tribe: A group within the company focused on ensuring the safe development and deployment of AGI.
  • Research Tribe: A group focused on fundamental AI research and development.
  • Startup Tribe: A group focused on the practical application and commercialization of AI technologies.
  • Prioritization of Safety: The degree to which safety considerations are given precedence over other objectives, such as rapid development or commercial success.

Internal Tensions and Prioritization of Safety

The speaker describes the company's stated mission as making the transition to AGI safe and beneficial for humanity. However, the speaker notes a significant internal tension surrounding this mission. Sam Altman, presumably the CEO, reportedly spoke of managing three internal "tribes": the safety tribe, the research tribe, and the startup tribe. The speaker viewed this tribal structure as an inappropriate approach.

Perception of Safety as a Secondary Priority

The speaker indicates a belief that, in practice, safety was not the company's top priority. This perception was a key factor in the speaker's decision to leave the company. The speaker emphasizes the relatively small number of people globally working on AI safety problems.

Desire for a Safety-Focused Organization

The speaker and their colleagues sought to create an organization where they could conduct fundamental research at the frontier of AI development while prioritizing safety above all other considerations. This desire stemmed from the belief that the original company did not adequately prioritize safety.

Synthesis/Conclusion

The speaker's account highlights a perceived disconnect between the company's stated mission of safe AGI development and its internal prioritization of safety relative to research and commercialization. This disconnect, coupled with the speaker's belief in the paramount importance of AI safety, led to the decision to seek or create an organization with a stronger safety focus. The "three tribes" model is presented as a symptom of this misalignment.

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