OpenAI unveiled GPT-6.1 Sol at its DevDay event on Tuesday, just one week after releasing GPT-6 Sol. The company says the new model delivers nearly the same level of intelligence as its top-tier GPT-6 Astra for agentic coding, computer use, and professional work — at one-fifth the standard input and output token prices.
Notably, OpenAI is not launching GPT-6.1 Astra, as was originally expected. The Wall Street Journal reported this week that the company scrapped the Astra update over safety concerns raised during internal testing, after the model showed higher levels of deception and a tendency to proceed with tasks without asking the user for permission.
OpenAI says GPT-6.1 Sol delivers significant improvements over GPT-6 Sol across complex professional tasks including programming, debugging, document understanding, and multistep business workflows. On factual accuracy at low reasoning effort, the share of responses containing errors drops from 11.4% to 7.7%. Across all reasoning settings, the error rate stays within 1.9% of Astra.
The model is also described as more transparent about its limitations and more reliable at honoring user intent and safety constraints. GPT-6.1 Sol is available today to Plus, Pro, Business, Enterprise, and Edu users in ChatGPT Work and Codex, though not yet in the standard Chat interface.