OpenAI today released GPT-6.1 Terra, featuring enhanced visual reasoning, computer operation, factual accuracy, and software engineering capabilities with 50% lower API pricing compared to its predecessor.
The model improved factual accuracy significantly: in internal challenging prompt tests, the error rate dropped from 53.6% (GPT-5.6 Terra at low reasoning intensity) to 16.7%, further declining to 4.3% at highest reasoning intensity. On Terminal-Bench 4.0 programming benchmark tests, GPT-6.1 Terra achieved a 50.3% task completion rate at maximum reasoning intensity, up from 21.5% for GPT-5.6 Terra.