Lovable has confirmed a $400 million Series C funding round that values the European AI coding startup at $13.3 billion, roughly double its valuation from December. The investment signals strong investor confidence in the rapid growth of “vibe-coding” tools, which use AI to help people create software with natural-language prompts.

The round was led by Menlo Ventures and the Scaleup Europe Fund, alongside more than a dozen other investors. Lovable says it reached $500 million in annualised run-rate revenue in June and now hosts 60 million projects attracting 900 million monthly visitors; it is also expanding its technical infrastructure, including an in-house AI model and a multiyear Google Cloud agreement.