Two AI app builders, side by side. Facts below link to their sources; last checked 2026-10-17.

Chat-based builder for real websites and web apps, evolved from the open-source gpt-engineer project and the gptengineer.app platform. source

Vercel's AI builder that generates UIs and apps from prompts, with visual Design Mode, GitHub sync and deploy to Vercel. source
Lovable: Build and publish full-stack web apps by chatting with AI. v0: Vercel's prompt-to-app builder with Design Mode and one-click deploy.
Lovable: From $25/month (free tier available). v0: From $30/month (free tier available). Prices change often; confirm on the official pricing pages.