Builder.ai

Builder.ai, also known as Engineer.ai, marketed an AI platform ("Natasha") that aimed to simplify building apps and websites for businesses. The Microsoft-backed unicorn raised more than $450 million in funding. A 2019 Wall Street Journal investigation found that the AI was largely about 700 human engineers in India doing the coding. It claimed $220 million in anticipated 2024 revenue, but actual revenue was closer to $55 million. In May 2025 it announced insolvency proceedings after creditors seized $50 million borrowed in October 2024. By June 2025 it had laid off about 80% of its workforce, around 1,000 people.