C3.ai (NYSE: AI) and Opera (NASDAQ: OPRA) both saw their stocks skyrocket amid the recent buying frenzy in AI-related stocks. Shares of C3, which develops AI algorithms that can be integrated into a company's existing software infrastructure, have soared 240% since the beginning of the year. Opera, which recently upgraded its namesake web browser with AI features, generated a year-to-date gain of nearly 210%.

Should investors buy either of these red-hot AI stocks right now? Let's review their business models, growth rates, and valuations to decide.

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Source Fool.com