Language-learning expert Duolingo (NASDAQ: DUOL) has been crushing it on Wall Street lately. The stock is up by 180% since the start of 2023, lifted by a steady stream of analyst-stumping earnings reports.

However, the stock is soaring on some very lofty valuation ratios. Trading at 208 times earnings and 15 times sales, many value-minded investors would give Duolingo one quick glance before backing away slowly.

Is Duolingo's stock a buy today, or are those shares overdue for a price correction? You could make a serious argument both ways, but I know which way I'm leaning. Let's have a look.

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Source Fool.com