OpenAI ships ChatGPT health; o3 re-solves 4.8% of rare
OpenAI's June 18, 2026 release: GPT-5.5 Instant rated higher than physicians on a 3,500-response panel; o3 Deep Research surfaces 18 of 376 unsolved rare-disease cases (4.8%).
LifeSciBench: GPT-Rosalind 36.1%, artifact gap 17pts
OpenAI published LifeSciBench, a 750-task life-sciences evaluation. GPT-Rosalind hits 36.1% vs GPT-5.5's 25.7%, but drops 17 points on tasks with artifacts.