OpenAI says GPT-6.1 Terra cut GPT-5.6 Terra's error rate on OpenAI's internal error-inducing prompts from 53.6% to 16.7% at low reasoning effort

OpenAI introduces GPT-6.1 Terra, a fast, efficient model for visual reasoning, computer use and writing, priced at half of GPT-5.6 Terra and GPT-6.1 Sol.