Andrej Karpathy joins Anthropic to help launch a team focused on using Claude to accelerate pre-training research; he helped found OpenAI and worked at Tesla (Madison Mills/Axios)

<a href="https://www.axios.com/2026/05/19/anthropic-openai-karpathy-andrej-claude"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260519/i29.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260519/p29#a260519p29" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Madison Mills / <a href="https://www.axios.com/">Axios</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.axios.com/2026/05/19/anthropic-openai-karpathy-andrej-claude">Andrej Karpathy joins Anthropic to help launch a team focused on using Claude to accelerate pre-training research; he helped found OpenAI and worked at Tesla</a></b></span>&nbsp; &mdash;&nbsp; Andrej Karpathy, one of the best-known AI researchers in the world and a founding member of OpenAI, announced Tuesday that he's joining rival AI lab Anthropic.</p>