Archive · 6 Aug 2026
Alphabet Falls 4% as Google AI Shake-Up Raises Gemini Delays
Google is a very big technology company that makes computer programs, including smart tools called artificial intelligence, or AI.
Google makes an AI program called Gemini and hoped to release a new version of it in June.
That new version is still not ready, and some people who invest in Google started to worry.
Google also announced big changes to its AI team, which worried investors even more.
A famous scientist named Demis Hassabis, who was the boss of Google's main AI group, is moving to a new job where he can focus on making AI even smarter.
Another leader named Koray Kavukcuoglu will now take care of the everyday work of running the AI team.
At the same time, four important scientists who helped build Google's AI left to start their own company called Discovery Loop.
Because of all this news, the price of Alphabet's stock, the company that owns Google, went down by 4 percent in one day.
An expert says Google still has many smart people, but it will take time to replace the scientists who left.
Alphabet shares fell 4% on Wednesday after Google announced a sweeping shake-up of leadership at its AI division.
Demis Hassabis is stepping down as Google DeepMind CEO to become Alphabet's chief scientist, focusing on artificial general intelligence and spending more time at Isomorphic Labs.
Koray Kavukcuoglu, DeepMind's CTO and Alphabet's chief AI architect, will lead the AI division day-to-day as senior vice president.
Jeff Dean, Sanjay Ghemawat, Oriol Vinyals and Quoc Le left Google to launch AI startup Discovery Loop, which has Google investment and an Alphabet cloud partnership.
Gemini 4 remains unreleased despite an earlier June target, heightening investor worries about rivals OpenAI, Anthropic and lower-cost open-source AI models from China.
- Who
- Alphabet CEO Sundar Pichai, Demis Hassabis, Koray Kavukcuoglu, and departing researchers Jeff Dean, Sanjay Ghemawat, Oriol Vinyals and Quoc Le.
- What
- A sweeping leadership shake-up at Google's AI division: Hassabis becomes Alphabet chief scientist, Kavukcuoglu takes day-to-day command, and four senior researchers leave to found startup Discovery Loop; Alphabet shares fell 4%.
- When
- Announced on Wednesday; Gemini 4 was earlier targeted for June and remains unreleased, while Gemini 3 was released last November.
- Where
- Google DeepMind, Alphabet's AI division, which Hassabis has run from London.
- Why
- Investor concerns over Gemini delays and mounting competition from OpenAI, Anthropic and lower-cost open-source AI models from China.
Google leadership
Wall Street investors
Hassabis transition
Google leadership
Google says the long-discussed move lets Hassabis focus fully on shaping the future of AGI, work it calls 'vitally important to Alphabet and humanity.'
Wall Street investors
Investors read the upheaval as fresh instability, raising concerns over Gemini delays and Google's position in the AI race.
Impact of talent departures
Google leadership
A market strategist at Zacks Investment Management says Google's deep talent bench will cushion the loss of the four researchers.
Wall Street investors
The same strategist warns the departures 'will leave a mark for some time' and that restoring innovation and execution will not be easy.
Gemini's competitive position
Google leadership
Gemini 3 was widely seen as narrowing the gap with OpenAI and Anthropic, and Google touted Gemini's cost efficiency at its May developer conference.
Wall Street investors
Rival advances and the rise of cheap Chinese open-source models have put Google on the defensive, making the unreleased Gemini 4 a key investor focus.
- Company
- Alphabet Inc., Google's parent company
- Stock reaction
- Alphabet shares fell 4% on Wednesday
- Hassabis new role
- Alphabet chief scientist focused on AGI; also chairman of Google DeepMind
- New AI division leader
- Koray Kavukcuoglu, senior vice president
- New startup
- Discovery Loop, a public benefit corporation focused on machine learning, scientific research and engineering
- Startup founders
- Jeff Dean, Sanjay Ghemawat, Oriol Vinyals and Quoc Le
- Gemini timeline
- Gemini 3 released last November; Gemini 4 unreleased despite an earlier June target
- Earlier departures
- Noam Shazeer to OpenAI; Nobel laureate John Jumper to Anthropic
