Siri AI: Apple Rebuilds Its Assistant on Google Gemini at WWDC 2026

Siri AI stole the show at Apple’s WWDC 2026 keynote on June 8, and it is the biggest reset the assistant has had since it first arrived in 2011. Rebuilt on a custom Google Gemini model, the new Siri is meant to actually understand you — and finally behave like the AI helper your iPhone always should have had.

Apple opened WWDC 2026 at Apple Park in Cupertino on June 8, and the moment carried extra weight. It was Tim Cook’s last keynote as CEO, so the company wanted a headline worth remembering. Siri AI was exactly that.

After years of delays and a rare apology for the old assistant, Apple finally showed a version it felt proud of. Craig Federighi, Apple’s software chief, called Siri AI “a dramatically more capable and conversational assistant.” In other words, the long wait is officially over.

The assistant did not arrive alone, either. Apple also previewed homeOS for future smart-home hardware, refreshed its Liquid Glass design, and pushed developer betas across six operating systems. Still, Siri AI was the clear star.

Old Siri handled timers and weather. The new one is built to hold a real conversation. It understands personal context, pulls current answers from the web, and takes actions across your apps and devices instead of dumping you on a search page.

Meanwhile, the voice itself got an upgrade. Siri AI sounds far more natural than the robotic Siri you know, and you can tune the pace and expressiveness to your taste. As a result, talking to your phone feels less like barking commands and more like asking a helpful person.

Here is the twist that surprised everyone: Siri AI is powered by Google. Apple licensed a custom version of Google’s Gemini models — reportedly a 1.2-trillion-parameter system that uses a mixture-of-experts design to stay fast by firing only the parts it needs for each request.

The deal is enormous, too. Bloomberg’s Mark Gurman reported a multi-year agreement worth roughly $1 billion a year, first confirmed back in January. Even so, Apple blends Gemini with its own on-device Apple Intelligence, so Google handles the heavy reasoning while your iPhone keeps things private and quick.

For the first time, Siri lives in its own app on iPhone, iPad, and Mac. Open it and you get a clean space to chat, attach images or documents, and scroll back through past conversations that sync across your devices through iCloud.

It also shows up right in the Dynamic Island. A new “Search or Ask” prompt with a glowing cursor sits at the top of the screen, so you can fire off a multi-step request without leaving what you are doing. Because of this, Siri AI feels woven into the system rather than bolted on.

This is where the upgrade starts to feel genuinely new. Point your Camera at a food label and Siri AI reads the nutrition facts back to you. Snap a group-dinner receipt and it splits the bill, working out who owes what.

On top of that, it can draft and send emails, chain several steps into a single request, and hold context as the task unfolds. Instead of ten taps, you describe what you want once and let the assistant handle the busywork.

Apple did something unusually open here. In iOS 27, new Extensions let you set a different default assistant entirely — Anthropic’s Claude, OpenAI’s ChatGPT, or Google’s Gemini — if Siri AI is not your thing.

However, that choice is yours to make, not Apple’s to force. Siri AI can also hand specific questions off to those services when it makes sense, which means you are no longer locked into a single AI on your iPhone.

Naturally, Apple leaned hard on privacy. Siri AI handles what it can directly on your device, then routes heavier requests through Private Cloud Compute, a server layer Apple says even it cannot read. Reporters described the setup as a three-tier privacy stack.

Federighi put it bluntly, saying “privacy in AI is non-negotiable,” and took a thinly veiled swipe at rivals chasing “AI for the sake of AI.” Whether that promise holds up will be the real test once the assistant reaches millions of hands.

Developers get first crack: betas began rolling out on June 9, although iOS 27 added a waitlist just to access the new Siri and its app. For everyone else, the public release is expected later in 2026 alongside iOS 27, with some features arriving gradually rather than all at once.

So a little patience is still required. Even so, after a year of delays, Siri AI is finally real software you can point to — not just another promise on a keynote slide.

Want to go deeper? Compare Siri AI with a rival voice helper in our breakdown of xAI’s Grok 4 assistant, then explore the best AI chatbot platforms reshaping how we talk to machines in 2026.

*Sources: Apple Newsroom, Reuters, The Verge, The New York Times, BBC, CNBC, Bloomberg, Ars Technica, MacRumors, NPR, Variety.*