Dr Jack JP O'Sullivan

Proud to have contributed to @OpenAI’s #Healthbench, alongside physicians from around the world. This was a unique opportunity to evaluate how AI performs on real health challenges and help shape how we measure progress. Learn more: openai.com/index/healthbe…

In “conversations that reflect real-world use of LLMs, GPT-5.4 correctly recommends immediate care in emergency cases more than 99% of the time”. This team is committed to evaluation integrity and improvement because they care about the real outcomes here ❤️ ⚕️

📣Another one, soon after ChatGPT Health: Introducing ChatGPT for Healthcare and OpenAI for Healthcare. ChatGPT for Healthcare brings health intelligence together with trusted medical evidence, health workflows, enterprise controls, and HIPAA compliance. openai.com/index/openai-f…

Today we’re launching ChatGPT Health. People already use ChatGPT to understand test results, prepare for appointments, and make sense of what they’re dealing with. Health brings all of that into a dedicated, private home, with the ability to securely connect apps and medical records. We’re starting with a small group of users from the waitlist and will expand access over the coming weeks. Learn more: openai.com/index/introduc…

2026 may be the year AI begins delivering its most tangible benefit to humanity: better health. Over 200M people already use ChatGPT every week to navigate their health across billions of messages — and today, we’re introducing ChatGPT Health ♥️ 🧵 openai.com/index/introduc…

No doctor today is worth less than they were 17 years ago. That’s why we’re standing together for #PayRestoration.

… as one of the independent physicians working on this effort. Learn more about the project here: openai.com/index/ai-clini…

A new study between @OpenAI and @PendaHealth details a real-world study of an AI copilot tool which acts as a safety net for clinicians. In this study, the copilot tool helped reduce diagnostic errors by 16% and treatment errors by 13%. I was fortunate to contribute ... 1/

next big thing: Agent Simulations 🔥 run your agent on many simulated scenarios to test it's doing the right thing ✨ auto-simulate users in different edge cases 📊 judge, tool calls check, simulation control 🧑‍💻 open-source, compatible with all AI frameworks

@KidsBalanced @RazaSN This was a fantastic thing to be part of and you did a stellar job leading us Rebecca - thank you so much!

Special thanks to the physician advisors on this work @RazaSN, @OSullivan Frida Vizcaino, Antoine Denis, Pamir Cerci, and TingTing Yan 🫶🏻

I’m incredibly proud to lead the physician team contributing to OpenAI’s #Healthbench and to have helped shape the framework for its design. Evaluating how AI performs on real health challenges is essential!

📣 Proud to share HealthBench, an open-source benchmark from our Health AI team at OpenAI, measuring LLM performance and safety across 5000 realistic health conversations. 🧵 Unlike previous narrow benchmarks, HealthBench enables meaningful open-ended evaluation through 48,562 unique physician-written rubric criteria spanning several health contexts (e.g., emergencies, global health) and behavioral dimensions (e.g., accuracy, instruction following, communication). Blog, paper, code: openai.com/index/healthbe…

We've just released HealthBench — a new eval for AI systems for health. Developed with 262 physicians who have practiced in 60 countries.

@TicketmasterDE Hi, our tickets haven't arrived since purchase several hours ago, can you DM?

A multi-million pound grant has been awarded to Newcastle researchers to tackle challenges facing healthcare workers in remote and deprived areas. Source: Press Office Shared via the Google app search.app/ANmgbSysxiXZsm…

Doctors in England are working in the NHS for £17/hr. @wesstreeting has proposed that some doctors are worth an extra 49p this year. Under-valuing the public sector seems to be a common theme for this government. If they keep proposing pay cuts, drs will be back out on strike.

@HSELive That's grand, have sent - thank you!

@OSullivan Hi Jack, can you drop us a DM and we will follow up.

@HSELive Hello, I booked a marriage notification appointment online in Dublin but our phone numbers weren't recorded. Can I email them along to someone, or is it okay to just show up for the appointment?

@HSELive Hi, unfortunately, it looks like that email address is not active - is there perhaps a specific person happy to assist here at the Dublin office? Can DM if they would rather keep their email address private

@HSELive Thank you, that's really helpful - I will get in touch via the email provided