OpenAI launches GPT-6.1 Terra with visual reasoning and computer use capabilities

OpenAI released GPT-6.1 Terra on October 26, 2026, as a mid-range model positioned between Sonnet and Opus, emphasizing visual reasoning and computer use for tasks like drafting proposals and editing videos. Priced at $1 per million input tokens and $5 per million output, it costs nearly half as much as GPT-5.6 Terra and GPT-6.1 Sol, while being around 10 times more expensive than GPT-6 Luna. OpenAI's Ted Sanders noted on Hacker News that Terra is better than Astra and Sol for technical communication, similar on vision and computer use but much faster.