Update
OpenAI Launches GPT-6.1 Terra with API Price Reduction
OpenAI has released GPT-6.1 Terra, an upgrade to its mid-tier model, which now operates apps and screens more like a person would. The new model costs developers 50% less than GPT-5.6 Terra and handles computer tasks faster and more accurately. It is available to all Plus, Pro, Enterprise, and Edu users in ChatGPT Work and Codex, with free users getting the lower-tier GPT-5.6 Luna. On an internal error test, the rate of factual errors at low reasoning effort fell from 53.6% for GPT-5.6 Terra to 16.7% for GPT-6.1 Terra, and at maximum effort it fell to 4.3%. Terra also finishes tasks more than three times faster on average than GPT-6 Astra and GPT-6.1 Sol.