Post by OpenAI on X
OpenAI@OpenAI
XThe new GPT-5.6 Sol powers all chats for paid users, including Instant, creating one consistent experience.
In our high-stakes factuality evaluation covering finance, medicine and law, the new GPT‑5.6 Sol produced 68% fewer responses with factual errors than GPT‑5.5 Instant.

1.9K likes58 repliesPosted Aug 6, 2026