OpenAI Launches GPT-6.1 Terra, Cutting GPT-6.1 Sol API Prices in Half for Agentic Workloads

OpenAI has introduced GPT-6.1 Terra, a new model variant designed specifically to reduce the cost of running AI agents at scale, pricing it at half the API cost of GPT-6.1 Sol. This continues OpenAI's strategy of tiering its model family for different cost-performance tradeoffs, similar to how GPT-4o Mini served as a cheaper alternative in earlier generations. For developers building agentic pipelines, this represents a meaningful reduction in inference costs for high-volume, multi-step tasks. Terra is positioned for autonomous work where per-call economics matter more than peak capability. Teams currently running GPT-6.1 Sol for agent orchestration should evaluate whether Terra meets their quality bar at lower cost.