OpenAI releases GPT-6.1 Terra, a cheaper mid-tier AI model
The gist
OpenAI released GPT-6.1 Terra, a mid-tier model priced 50% below its predecessor and GPT-6.1 Sol.
The launch targets everyday computer work, where enterprises weigh intelligence against cost.
How it unfolded
- Jun 26, 2026OpenAI introduced Terra as part of the GPT-5.6 family in a limited preview requested by the Donald Trump administration.
- Jul 9, 2026OpenAI opened Terra to the public as a model competitive with GPT-5.5 at about half the cost.
- Sep 2026OpenAI launched GPT-6 Sol and Luna minutes after Anthropic released Claude Opus 5.5, with no new Terra.