Karan Singhal(@thekaransinghal):GPT-6 Luna and Sol are a step towards health intelligence too cheap to meter. ♥️ These models push the frontier of performance per dollar on HealthBench Professional. GPT-6 Luna scores higher than GPT-5.6 Sol–our best model a few weeks ago–at their highest reasoning efforts, despite GPT-6 Luna being ~34x cheaper: about a third of a cent per response. HealthBench Professional consists of real clinician tasks, including care consultations, medical documentation, and research. This evaluation is designed to be challenging and focuses on especially complex and rare situations. I’m excited for what abundant health intelligence can unlock for patients and clinicians.

2026.09.23 18:37

GPT-6 Luna and Sol are a step towards health intelligence too cheap to meter. ♥️ These models push the frontier of performance per dollar on HealthBench Professional. GPT-6 Luna scores higher than GPT-5.6 Sol–our best model a few weeks ago–at their highest reasoning efforts, despite GPT-6 Luna being ~34x cheaper: about a third of a cent per response. HealthBench Professional consists of real clinician tasks, including care consultations, medical documentation, and research. This evaluation is designed to be challenging and focuses on especially complex and rare situations. I’m excited for what abundant health intelligence can unlock for patients and clinicians.