Unannounced GPT-6 Sol References Stir Speculation as OpenAI Expands Astra Rollout

Unconfirmed references to GPT-6 Sol have intensified speculation that OpenAI is preparing another GPT-6-family release, but as of September 15, 2026, the company has announced only GPT-6 Astra in the GPT-6 generation. The distinction matters: Astra is already public as OpenAI's new frontier model, while Sol remains unannounced, with no official launch date, pricing page, model card, or availability statement.