OpenAI has launched GPT-6.1 Terra, a mid-tier reasoning model designed to make capable AI more affordable for high-volume business and developer workloads. It replaces GPT-5.6 Terra and sits between the lower-cost GPT-6 Luna and OpenAI’s more capable GPT-6.1 Sol and GPT-6 Astra models.openai Built for everyday professional tasks OpenAI describes...