OpenAI releases GPT-6.1 Terra with lower API prices and stronger benchmark results

What happened

OpenAI has released GPT-6.1 Terra, with API pricing of $1 per million input tokens, $5 per million output tokens, and $0.05 per million cached input tokens. Artificial Analysis reports a six-point Intelligence Index gain over GPT-5.6 Terra at maximum reasoning effort, with task costs falling from $1.40 to $0.40. The model is available to Plus, Pro, Enterprise, and Edu users in ChatGPT Work and Codex, and through the API; OpenAI still recommends GPT-6.1 Sol and GPT-6 Astra for the most demanding coding tasks.

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Reported by 6 sources

The story so far

OpenAI has released GPT-6.1 Terra, which it says can interpret screens and take action across apps, with access now available through the API and to Plus, Pro, Enterprise and Edu users in ChatGPT Work and Codex, according to The Decoder. API pricing is $1 per million input tokens and $5 per million output tokens, down from GPT-5.6 Terra’s $2 and $12, according to Artificial Analysis; The Decoder reports cached input pricing of $0.05 per million tokens. In Artificial Analysis evaluations at maximum reasoning effort, Terra gained six points on the Intelligence Index over its predecessor while cost per task fell from $1.40 to $0.40. On AA-Omniscience, its hallucination rate fell from 88% to 38%, alongside a two-point accuracy increase. Terra scored 48 on the Coding Agent Index v2.0, below GPT-6.1 Sol’s 54 and above GPT-6 Luna’s 31. OpenAI says Terra completes tasks more than three times faster on average than Astra and Sol, while continuing to recommend those models for deep research and complex coding, according to Baoyu. Greg Brockman said Terra’s computer use feels faster than his own unaided computer use.