Apple details how it trained its new AI models, see highlights

During WWDC25, Apple announced new versions of its on-device and cloud-based foundation models. Now, they have published a tech report detailing how those models were trained, optimized, and evaluated. And the report includes some genuinely interesting under-the-hood tidbits.

In a comprehensive document called “Apple Intelligence Foundation Language Models – Tech Report 2025“, the company walks through multiple aspects of the new models, including their architecture, data…