What changed
Duolingo's second quarter report, published in August, shows daily users at 58.7 million, up from 47.7 million a year prior, which means roughly eleven million more people open the app daily.
Then look at what customers actually paid. Bookings, the cash customers pay up front, rose 8 percent from the prior year, down from 14 percent in the first quarter, which means usage and money are growing at different speeds.
Daily users in the second quarter, up from 47.7 million a year earlier. The cash they paid grew far slower.
Why it matters
Duolingo is the clearest public test of whether AI features in a consumer app pay for themselves. Duolingo says it beat its own margin expectation partly by slowing how fast it shipped its flagship AI feature, because the feature costs money every time someone uses it.
If you pay for Super, you may not have the conversation feature you think you bought. If you are weighing a per-use AI feature in your own business, this is an audited example of rationing on purpose. Taken together, the quarter suggests popularity and payment have come apart, and the AI bill sits in the gap.
What to watch
The kept 2026 target leaves about $380 million to collect in the fourth quarter, more than any prior quarter this year, which means the year's math back-loads.
Watch third quarter bookings against the $307 million guide, higher than the second quarter's pace, which means the next print is the test. Whether Super subscribers actually receive Video Call this year is not yet known.
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