GPT-5.6 Terra
OpenAI · 2026-07-09
GPT-5.6 Terra is OpenAI's balanced model in the GPT-5.6 family, designed for workloads that trade off intelligence and cost and roughly corresponding to the mini tier in earlier GPT-5 families. It is a closed reasoning model with text and image input, a 1.05-million-token context window, and broad built-in tool support.