Amjad Masad announced that Replit has raised $400 million in a series D, and also unveiled a powerful new agent.

Amjad Masad’s Replit allows users to work together like they’re doodling on a white board. It also made him a billionaire along the way.

As new large language models, or LLMs, are rapidly developed and deployed, existing methods for evaluating their safety and discovering potential vulnerabilities quickly become outdated. To identify ...