ChatGPT-5 just launched, marking a major milestone for OpenAI and the entire AI ecosystem.
Fresh off the live stream, Erik Torenberg was joined in the studio by three people who played key roles in making this model a reality:
- Christina Kim, Researcher at OpenAI, who leads the core models team on post-training
- Isa Fulford, Researcher at OpenAI, who leads deep research and the ChatGPT agent team on post-training
- Sarah Wang, General Partner at a16z, who’s led our investment in OpenAI since 2021
They discuss what’s actually new in ChatGPT-5—from major leaps in reasoning, coding, and creative writing to meaningful improvements in trustworthiness, behavior, and post-training techniques.
