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We scored v0, Replit, Lovable, Bolt.new and Base44 across six documented axes and summed them into one composite ranking. See the 2026 leaderboard, who wins each axis, and how to reproduce every score.
Every builder now makes pretty output; the code underneath diverges. We score five AI app builders on visual fidelity, code structure, and functional correctness against one fixed brief. Lovable leads at 93/100.
Deploying is solved; deploy quality is not. We score five AI app builders on the SEO, accessibility, and performance of the app they actually ship. v0 leads at 9/10.
A neutral, reproducible leaderboard ranking five AI app builders on BuilderProof auth and access-control posture axis, scored from public 2026 documentation. Bolt and Replit lead at 8/10, Base44 trails at 5/10, with the July 2025 Wiz disclosure weighed as documented evidence.
Lovable, Bolt, and Replit scored on BuilderProof's six reproducible axes in 2026. The three pairwise results form a near-cycle, not a clean 1-2-3. See who wins each row.
