As of today, November 6, 2023, OpenAI's latest flagship model is **GPT-4**. They are holding their first developer conference today, and while new announcements about improved GPT-4 versions and new capabilities are anticipated, **GPT-4 is still considered the flagship model.**

It is possible this answer will be outdated *very* soon (potentially later today). Keep an eye on OpenAI's announcements.
