OpenAI’s September 2026 rollout of the GPT-6 family—starting with flagship GPT-6 Astra on September 3, followed by Sol, Luna, and GPT-6.1 Sol variants—has reset expectations for the next major integer jump. No official GPT-7 announcement, preview, or internal codename has surfaced in OpenAI channels or credible reporting as of mid-October 2026, with the company instead iterating rapidly on GPT-6 tiers for coding, agents, and cost efficiency. Historical flagship gaps (roughly 13 months from GPT-5 to GPT-6) and infrastructure timelines around Stargate-scale training point to a likely second-half 2027 window, though trader sentiment hinges on any surprise developer event or competitive pressure from labs like Anthropic that could compress or extend the cycle.