OpenAI releases GPT-6.1 Terra, a cheaper mid-tier model
The gist
OpenAI released GPT-6.1 Terra at $1 per million input tokens and $5 per million output tokens.
It replaces GPT-5.6 Terra at half the price, targeting high-volume developer work.
How it unfolded
- Jul 9, 2026OpenAI released GPT-5.6 Terra, the prior mid-tier model, at $2 per million input tokens and $12 per million output tokens.
- Sep 29, 2026OpenAI released GPT-6.1 Sol at $2 per million input tokens and $10 per million output tokens.
- Oct 7, 2026The string gpt-6.1-terra-medium was spotted on social channels, the earliest public trace of the identifier.