Daily Briefing: Anthropic Poaches Karpathy and OpenAI's SDK Builder

Anthropic made two aggressive moves in the same week: hiring OpenAI co-founder Andrej Karpathy as a researcher and acquiring Stainless, the company that built developer tools for both Anthropic and OpenAI. Together, these moves signal a deliberate strategy to pull elite talent and critical developer infrastructure from competitors' ecosystems, raising questions about vertical integration and ecosystem lock-in across the frontier AI labs.

STORIES COVERED

Andrej Karpathy joins Anthropic as researcher — Karpathy's X announcement

Anthropic acquires Stainless, SDK and MCP server platform powering Claude integrations —  ...