Apple will use Google's Gemini models for its AI features, including a revamped version of Siri. The multi-year partnership means Apple will rely on Google's Gemini and cloud technology for its upcoming products, according to CNBC. The new features are expected to roll out later this year.

In a statement, Apple said that after careful evaluation, Google's technology offers the most capable foundation for its applications. Rumors about talks between the two tech giants first surfaced in March of last year. Later reports suggested the switch would cost Apple more than one billion dollars annually.

The move comes as Apple continues to struggle with Siri's underlying architecture. Internal reports describe Siri as a technically fragmented system built from old rule-based components and newer generative models - a combination that makes updates difficult and leads to frequent errors. Apple is also working on an entirely new in-house LLM architecture and a model with roughly one trillion parameters, aiming to eventually break free from external providers. Google faced similar challenges early on keeping pace with OpenAI's rapid progress but managed to catch up.