Mirendil Raises $1B Series A at $5B From Kleiner Perkins and Clearlake to Automate Frontier AI R&D

Mirendil closed a $1B Series A led by Kleiner Perkins and Clearlake Capital, with Battery, Google, M13, Pear VC, S32 and others participating, roughly 5x its seed round from a few months earlier. The company, founded by researchers formerly at Anthropic, OpenAI, Google DeepMind and xAI, says it is building tools 'to make frontier AI research and development more accessible'; outside reporting pegs the post-money at about $5B. Public products include a 10M-token-context model, Fern 0.1, and Lor, a platform that orchestrates hundreds of autonomous coding and experiment agents.