What is GPT-6.1 Terra?
GPT-6.1 Terra is a OpenAI model: OpenAI's 26 Oct 2026 Terra line. Text and image in, text out. 1,050,000-token context, 922,000 max input, 128,000 max output. Knowledge cutoff 1 Jun 2026. Short-context API list is $1 / $5 per 1M tokens.