This is what Lovable's terms say:

  # AI Output
  
  The Services may use artificial intelligence models to
  generate code, content, or other outputs ("AI Output").
  AI Output may contain errors, inaccuracies, or other
  issues and should not be relied upon without
  independent review and testing. You are solely
  responsible for reviewing, validating, and using any
  AI Output, whether it is generated through:
  
  - our Platform's integrated AI;
  - the AI Gateway (via Third-Party AI Providers); or
  - any model or API that you connect to the Services.