Apple Intelligence has been a wreck since its first features rolled out last year, and a big new report from Bloomberg’s Mark Gurman details why — and how Apple is trying to piece things back together. And much of its effort hinges on rebuilding Siri from the ground up.

Gurman has reported in the past that Apple is working on what it’s internally calling ‘LLM Siri’ — a reworked, generative AI version of the company’s digital assistant. Apple’s previous approach of merging the assistant with the existing Siri hasn’t been working. Gurman describes in great detail a number of reasons why, but here’s a quick summary:

Now the company is trying to rejigger its approach. Part of that is a total overhaul of Siri, rather than just trying to make generative AI work in concert with the old Siri. According to Gurman, Apple has its AI team in Zurich working on a new architecture that will “entirely build on an LLM-based engine.” Gurman reported in November last year that the company was working on this, and the idea is that it will make the assistant “more believably conversational and better at synthesizing information.”

Another part of the solution is leveraging iPhones and differential privacy to improve Apple’s synthesized data — comparing fake training data with language from iPhone users’ emails, but doing so on-device and sending only the synthesized data back to Apple for AI training. And one way the company is discussing improving Siri is letting the LLM version loose on the web to “grab and synthesize data from multiple sources.” Basically, Siri as an AI web search tool not unlike Perplexity, which is one of the companies Apple has approached about partnering for AI search in Safari.

Whatever the outcome, apparently Giannandrea won’t be a direct part of it, having been taken off of product development, Siri, and robotics projects in the spring. According to Gurman, Apple execs have talked about putting him “on a path to retirement,” but are concerned that some of the research and engineering folks he brought with him would leave with him, too. Whatever the case, Gurman says Giannandrea plans to stick around, “relieved Siri is now someone else’s problem.”