Everything on Product Quality

AI demos often mask scaling issues, producing high-quality samples but low-quality volume. Duolingo rejects AI outputs that degrade standards, particularly in creative design and code, to prevent "slop" from reaching users.

Impact: Protects brand reputation and user retention by ensuring that speed gains from AI do not compromise the core value proposition of the product.

— from Duolingo CEO Pivots to User Growth, Refines AI Strategy · Masters of Scale· May 12, 2026