DUOL YTD mountain DUOL YTD chart Smilek also said there may be additional room on the table for potential upside to Duolingo's full-year 2024 outlook as part of the first-quarter numbers. "We believe Duolingo could raise its 2024 outlook based on solid 1Q trends & recent third-party data, strong marketing, & healthy execution — a full-year guidance raise would align with management's historical beat & raise cadence," he wrote. Smilek praised Duolingo's strong advertising presence that's resulted in rising user growth.