Which of these speculative stocks is a better investment right now?BigBear.ai (BBAI 0.62%) and SentinelOne (S 0.54%) represent two unique ways to invest in the growing artificial intelligence (AI) market. BigBear.ai develops modular data mining and analytics tools that can be plugged into edge networks. SentinelOne provides AI-powered cybersecurity tools that are aimed at replacing human analysts.Those AI-driven technologies sound promising, but both stocks disappointed their early investors. BigBear.ai wen ...