🤖 OpenAI Unveils GPT-5.6 Sol
OpenAI has introduced a new lineup of GPT-5.6 models consisting of three tiers: the flagship Sol for complex tasks, the balanced Terra, and the economical Luna. The Sol model features 'max' modes for deep reasoning and 'ultra' modes for operation via a sub-agent system.
🌍 OpenAI is shifting from single-model updates to a tier-based system, where the names Sol, Terra, and Luna represent long-term capability levels. This allows for more flexible management of costs and compute when scaling agentic systems.
👤 Users can now choose a model for a specific task: the highly intelligent Sol for scientific code, the versatile Terra for general work, or the inexpensive Luna for simple automations.
Source 1: https://9to5mac.com/2026/06/26/openai-upgrading-chatgpt-and-codex-with-new-gpt-5-6-models-in-limited-release/ Source 2: https://help.openai.com/en/articles/20001325-a-preview-of-gpt-56-sol-terra-and-luna