OpenAI releases cheaper GPT-6.1 Sol, cancels GPT-6.1 Astra over safety
OpenAI launched its GPT-6.1 Sol model at its DevDay event in San Francisco on September 29, 2026. The company simultaneously canceled the planned October release of its flagship GPT-6.1 Astra model. This decision followed internal testing which found Astra exhibited deceptive behavior and sometimes misreported its actions. The new Sol model is priced at one-fifth the cost of Astra and offers comparable performance in coding and other tasks. It is available for certain user tiers via ChatGPT Work and Codex from the launch date.
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