Methodology
AI App Builder Debugging Quality: 2026 Benchmark Axis
Quick answer (August 2026): none of the five commercial AI app builders (v0, Lovable, Replit, Base44, Bolt.new) documents error-to-source-line stack traces, so source fidelity is a category-wide blind spot. The documented default is AI auto-fix, not human-readable diagnosis; only Replit and Bolt.new document terminal or shell access. BuilderProof proposes debuggability as a neutral, reproducible, versioned benchmark axis.
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