OpenAI ships GPT-6.1 Terra at half the price of GPT-6.1 Sol

OpenAI's launch post describes Terra as a mid-tier model that pairs sharper visual reasoning and precise computer use with clearer, more natural writing. That positioning, combined with the halved price relative to GPT-6.1 Sol, suggests OpenAI is aiming Terra at customers who want capable agent-style behavior without paying flagship rates.

The benchmark figures OpenAI published are its own. On its internal error-prompt benchmark, the error rate at low reasoning effort fell from 53.6% with GPT-5.6 Terra to 16.7% with Terra, and at max effort it drops to 4.3%, nearly matching GPT-6 Astra and GPT-6.1 Sol. Artificial Analysis, an outside evaluator, posted that Terra is the first Terra-class model since GPT-5.6 and is more intelligent for less than a third of the cost.

OpenAI also says Terra completes tasks more than three times faster than GPT-6 Astra and GPT-6.1 Sol, though that claim rests on its own timing runs. The combination of lower price and faster completion could shift how teams allocate work between Terra and the more expensive models, though the performance comparisons come from OpenAI rather than independent testing.