The lab in London that Google bought and turned into its core for artificial intelligence. This is where Gemini is born - the model behind most of what Google today calls "AI".
DeepMind started in 2010 in London, founded by Demis Hassabis, a neuroscientist and former chess prodigy, along with Shane Legg and Mustafa Suleyman. Their goal wasn't a product, but something more ambitious - to build artificial intelligence that thinks generally, not just on one narrow task. They taught it to play old video games from the 80s before moving on to something more serious.
Google bought it in 2014 - their biggest European acquisition up to that point. DeepMind remained a lab bought by a giant: it wasn't immediately merged with the product teams, but kept separate, as a research unit under Alphabet, the parent company of Google.
In practice DeepMind solves problems that look impossible. AlphaFold, their system, predicts how a protein folds in space - a question biologists had been struggling with for decades, because a protein's shape determines what it does in the body. AlphaGo beat the best Go player in the world, a game so complex that computers weren't supposed to master it any time soon. Today their main product is Gemini - the model that answers in place of Google Assistant, writes text in the search engine and powers Google Photos.
Later, as the AI race heated up, Google merged DeepMind with its other big AI team, Google Brain, into one whole under Hassabis's leadership. The reason is simple - competition with OpenAI got too fast for them to afford two separate teams heading in different directions. Every time you ask Google something and get a ready AI answer instead of a list of sites, you're going through this lab's work without seeing its name.
From the builder in me
This happens on a much smaller scale too: a small research group gets resources and freedom from a big company, and suddenly its whole speed changes. DeepMind is the same story, just with Google's budget behind it. They didn't buy a finished product, they bought brains and gave them a decade to think in peace, without pushing them for quarterly results. It rarely happens exactly like this, and that's exactly why the result is what it is.