OpenAI has accelerated its GPT-6 family releases through late 2026, with GPT-6 Sol and Luna launching September 22, followed by GPT-6.1 Sol in late September, GPT-6.1 Terra in October, and GPT-6 Cyber on November 5. These updates emphasize improved capabilities in coding, computer use, cybersecurity, and interactive interfaces, often at lower token costs than prior versions. The pattern of frequent, tiered releases within the GPT-6 line creates market-implied odds favoring a GPT Sol (6.2+) variant by year-end while keeping near-term probabilities low. Key upcoming catalysts include potential further refinements ahead of developer events or year-end benchmarks, though exact timelines remain unconfirmed and subject to OpenAI’s internal safeguards.