We decided on Kotlin because it's easy to use, it's memory safe, it's type safe, and their functional constructs. It's extensible via compiler plugins, and it's performant.

Lee started using Kotlin at the startup Math Camp before it was acquired by Pinterest simply because her team thought it was the best language for their needs. "We started from scratch," she says.

Thanks to this approach, Meta has been able to port over 10 million lines of Kotlin code, allowing thus the majority of Meta Android engineers to switch to Kotlin for their daily tasks.

However, it’s worth noting that many developers using Kotlin for AI still rely heavily on Java libraries due to Kotlin’s Java interoperability. And in the context of AI, Java has many advantages.

"Google and Udacity currently offer video-based courses for Kotlin Bootcamp and How to build Android apps in Kotlin," said Jocelyn Becker, senior program manager of Google Developer Training.

Snyk puts growth in Kotlin adoption down to how seamlessly it integrates with Java. The growth has put Kotlin in second place, albeit well behind Java, but now ahead of Clojure and Scala.