Apple is releasing a free software update that will inject its first dose of artificial intelligence into its iPhone 16 lineup as the trendsetting company tries to catch up with technology's latest craze.

The upgrade to the iOS 18 operating system on Monday arrives more than a month after four iPhone 16 models equipped with the special computer chip needed to power the AI features went on sale at prices ranging from $800 to $1,200. Last year's premium models — the iPhone 15 Pro and iPhone 15 Pro Max — also possess a processor that will enable the AI technology after the software update is installed.

Recent versions of Apple's iPad and Mac computer also can be updated with the software.

Countries outside the U.S. won't be getting the AI software for their iPhones until next year at a date still to be determined. Apple spent the past five weeks testing the AI software among an audience of iPhone owners who signed up to help the company fine tune the technology.

The AI infusion is supposed to transform Apple’s often bumbling virtual assistant Siri into a more conversational, versatile and colorful companion whose presence will be denoted by a glowing light that circles the iPhone’s screen as requests are being handled.

While Apple is promising Siri will be able to perform more tasks and be less prone to becoming confused, it won’t be able to interact with other apps installed on the iPhone until another software update comes out at a still-unspecified date.

Other AI features included in this software update will handle a variety of writing and proofreading tasks, summarize the content of emails and other documents. The AI also will provide a variety of editing tools to alter the appearance of photos and make it easier to find old pictures.

Other AI tricks still to come in future software updates will include the ability to create customized emojis on the fly or conjure other fanciful imagery upon request. Apple also plans to eventually enable its AI suite to get a helping hand from OpenAI’s ChatGPT when users want it.

Most of the AI features Apple introduced Monday are already available on Android-powered smartphones that Samsung and Google released earlier this year.

In an effort to distinguish its approach from the early leaders in AI, the iPhone’s suite of new technology is being marketed as “Apple Intelligence.” Apple is also promising its AI features will do a far better job protecting the privacy of iPhone owners by either running the technology on device or corralled in a fortress-like data center when some requests have to be processed remotely.