They say artificial intelligence (AI) will improve medicine.
But how good is it?
Recently, several independent studies tested the leading AI systems, including the PrIME-LLM Benchmark (JAMA Network Open 2026) test.
AI systems faced realistic patient cases. They reasoned through symptoms, test results, and medical history, reached a diagnosis, and prescribed a treatment plan.
The competitors were GPT-5, Claude 4.5 Opus, Gemini 3.0, Grok AI, and 17 others.
The winner? Grok, which received the highest score. It excelled in final diagnosis and management reasoning. Grok correctly identified a complex case of autoimmune encephalitis, while several of the competitors missed it completely.
Grok was especially strong when given clear information and handling medical images.
We now see AI creating a new wave of innovative start-ups.
Example: OpenCancer.ai. Here is what it says: “When someone receives a cancer diagnosis, time suddenly becomes everything. Yet many patients wait 30 days or longer just to get a follow-up appointment. The information they need is scattered, technical, and overwhelming.”
OpenCancer.ai was created to fix that. Patients simply upload their medical records. The AI prepares a comprehensive analysis using the latest research and clinical guidelines. It finds precision testing options and clinical trials.
A human expert then reviews the report.
The patient receives a complete, personalized second opinion, often in just a few hours, instead of weeks. OpenCancer.ai refers patients to testing services, financial assistance programs, specialists, and clinical trials.
The result: the patient understands not only what is happening, but exactly what their options are. OpenCancer.ai is the kind of practical innovation we are starting to see more often. AI is not just helping doctors in the hospital, but even giving patients and families better tools to navigate one of the hardest moments in life.
Looking to the future, my personal view is that the old-world model of expensive healthcare, a closed guild of doctors with a monopoly on prescriptions, an army of lawyers looking for cash settlements, medical insurance bankrupting nations – all of that is coming to an end.
AI already is “smarter” than any individual doctor. It is only a matter of time before it replaces them. But let’s not get ahead of ourselves.
AI still has limits. It can make mistakes. It needs good data. And it must always be used with human oversight. No one knows what it eventually will cost.
But it is incomprehensibly “smarter” than humans.
When used wisely, it has the potential to save time, reduce errors, save lives, and give both doctors and patients more confidence. It is available anywhere on the planet, even in places days away from a doctor.
For the time being, the future of medicine will not be human or machine. It will be human and machine, working together. It will be better, and less expensive.
And that future is arriving faster than most people realize.
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