GPT-6.1 Terra Arrives at $1/$5 — Half the Rate of a Model OpenAI Shipped 27 Days Ago

OpenAI announced GPT-6.1 Terra on October 26, 2026, introducing a new mid-sized model priced at $1 per million input tokens and $5 per million output tokens. This release arrives 27 days after the launch of GPT-6.1 Sol . For developers and operators, the model is positioned by OpenAI as a fast, efficient tool designed to improve visual reasoning and computer use capabilities while providing more natural writing performance. Before the announcement, TestingCatalog and kie.ai described Terra as an unannounced or leaked model surfaced in Microsoft evaluation configurations with unconfirmed pricing, a status now superseded by the official announcement.