Can AI save global health? Bill Gates is betting $1 billion that it can.

On stage at Davos in the Swiss Alps earlier this year, Bill Gates, before an audience of the global do-gooding elite, announced a $50 million partnership between his foundation and an unlikely new ally, OpenAI, aimed at improving healthcare in Rwanda.

Just a month earlier, the Gates Foundation had released a harrowing report about widespread global health cuts and collapsing foreign aid infrastructure, documenting a rise in child deaths for the first time this century. But at Davos, even as the US hemorrhaged funding for vaccines, maternal healthcare, and HIV treatment, the Microsoft co-founder struck an optimistic tone.

“Using innovation, using AI,” Gates told Reuters, “I think we can get back on track.”

As it turns out, the partnership was just an opening salvo for what’s become a wholesale embrace of AI by the world’s largest global health philanthropy. A $200 million partnership with Anthropic came just a few months later. And then, on Tuesday, the Gates Foundation announced a plan to dole out a jaw-dropping $1 billion over the next two years for scaling up AI interventions across healthcare, education, and agriculture around the world.

The sense that AI will soon change everything, and mostly for the worse, has perhaps never felt so pressing and alarming as it does right now. But this hefty new commitment is premised on the idea that AI could eventually make our lives much better too. In a country like America, AI requires massive investments and buildout — in the grid, in power, in technology, in water. In many parts of Africa, already infrastructure-poor, the foundation is effectively betting that AI can compensate for some of the infrastructure that isn’t in place or that has been lost — and offer a new layer that can help in education, in delivering healthcare, and more.

The Gates Foundation’s new commitments include projects to improve how farmers analyze their crops, how doctors diagnose patients, and how students learn. Some have already proven to be quite effective, according to the foundation, with one tool improving the accuracy of medical diagnoses by 16 percent across several Kenyan clinics. “In poorer countries with enormous health worker shortages and lack of health systems infrastructure,” Gates wrote on his blog earlier this year, “AI can be a game-changer in expanding access to quality care.”

Last year’s foreign aid cuts were unfathomably destructive for some of the world’s poorest countries, shuttering thousands of clinics and perhaps hundreds of thousands of classrooms in places where critical workers and supplies were already stretched thin. No, AI cannot deliver a baby, administer a vaccine, or manage a classroom — not yet, at least — but it can, the Gates Foundation hopes, help ease the burden and augment the quality of care for nurses and teachers now tasked with serving far more people than any one person should.

“This is the most transformative technology of our lifetime,” Mark Suzman, CEO of the Gates Foundation, told me, and while there are “very real risks and challenges” surrounding AI, it also presents genuine opportunities to tangibly improve many people’s lives.

It is a tantalizing premise: We can’t afford to build clinics, hire teachers, or lay new power lines, but perhaps AI could create the digital infrastructure needed to help billions of people do more with what they have — or rather, with what’s left. The question is, can the right layer of innovation help bolster a buckling system, even as the physical and logistical infrastructure surrounding it crumbles?

Most Americans have yet to see AI improve their lives in meaningful ways, much less those living in poverty or in countries where only a sliver of the population has ever used ChatGPT.

But those numbers in the developing world are slowly changing, a shift enabled in part by other global health funders convinced that as foreign aid dries up, AI could soon help the world do more with less. The Trump administration itself is on board with this thinking, so long as it benefits American tech companies. Last year, the State Department announced a $150 million partnership with the drone company Zipline to transport medical supplies in several countries.

To Zipline’s credit, an NPR reporter in Rwanda last month found that the company’s drones were already saving lives in places with poor road infrastructure, where driving to the nearest hospital can take hours on winding hills, but where drones can deliver crucial blood transfusions within minutes.

And yet, for Rwandans to benefit fully from these high-tech deliveries, they need staffed clinics to visit. As a result of foreign aid cuts, some of those literal landing spots are now on the verge of closing in some of the nation’s most vulnerable rural corridors. “Without the underlying infrastructure, like roads, energy and power and unless there is accessibility, rural and otherwise,” Enoh Ebong, president of the global development department at the Center for Strategic and International Studies, told NPR, “then all of these solutions will stop short.”

But just as medical delivery drones still need a clinic to fly to, most of these interventions require some layer of physical infrastructure — roads, schools, power, and quite obviously, broadband — to function. Satellite imagery shows that some rural communities in sub-Saharan Africa quite literally went dark in the aftermath of USAID cuts. It will be much harder for their kids to prompt an AI math tutor, or for a local farmer to download a weather app.

“We’re seeing this very much as a both/and,” Suzman told me, calling more traditional funding for education and healthcare “the bedrock for long-term economic growth,” which AI is meant to supplement, not replace. But, in practice, foreign aid cuts have left serious cracks across much of that bedrock, which could make it harder for state-of-the-art solutions to function as intended.

It is obviously not incumbent on the Gates Foundation to pay for all of this alone – nor would it even be feasible for them to do so. And for the record, plenty of the foundation’s other grant programs are not AI-related at all. But this tension does speak to a broader question that may be felt most acutely in a context like global health, but ultimately one that touches us all: Do we spend our scarce resources on the digital infrastructure of the future at the peril of our needs right now? Could you justify buying the new $1,999 folding iPhone if you can barely afford to buy groceries?

The answer is not actually always an easy one. It is not for us to say, for example, that just because a community lacks reliable running water, its people should be excluded from the benefits (and encumbrances) of the smartphone, especially if that smartphone can connect them to health advice they could never access otherwise, or guidance that could help them survive a drought.

In some parts of the world, digital forms of banking arrived long before local brick-and-mortar branches did, instantaneously connecting countless people to a cheap and secure way to save and send their cash to family and friends in need. It is certainly possible that AI, or at least the kind of applications the Gates Foundation funds, could one day have a similarly transformative effect on how people access personalized levels of care, education, and other services in places without the resources to do so otherwise.

That is the hope, but it is also hard right now to believe uncritically in a technology that, as Gates himself blogged just last month, “will either be the greatest equalizer ever invented, or the worst source of injustice,” ushering in “one of the most turbulent times in human history.”

In an interview with the New York Times soon after, he seemed convinced that AI will likely do more harm than good. “I don’t like bringing bad news to people, and I don’t like saying that innovation may be a net negative,” he said. “But that’s where we are.”

Now he wants billions of people around the world to use it? Yes, Suzman said, because if not, then inevitably the best parts of AI — the potential for exponentially better cancer treatments, for example — will go only “to those who can pay for it,” while the worst parts of it will fall, as they so often do, on those who benefit the least. “These decisions are being made now,” he said, “and the decisions being made now will then probably shape the following two decades.” Here’s hoping they’re good ones.