GPT-5.6 rolls out in tiers: Sol for paid users, Terra and Luna free
OpenAI is gradually releasing GPT-5.6 with tiered access—Sol for paid subscribers, Terra and Luna for free accounts. The rollout includes ChatGPT Work agent, ChatGPT Sites publishing tool, and a merged Codex-ChatGPT desktop app.
OpenAI began rolling out GPT-5.6 this week with a tiered access model splitting capabilities across subscription levels. Sol is reserved for paid subscribers, while free users can access Terra and Luna. The company has not disclosed parameter counts, context window sizes, or benchmark scores.
Two major features ship alongside the release. ChatGPT Work is a new agent for non-coding tasks, positioning it as a competitor to Anthropic's Claude Cowork. ChatGPT Sites lets users publish small websites created inside the ChatGPT interface—similar to artifact-handling features in other platforms—allowing web content generation and deployment without leaving chat. OpenAI has not specified hosting limits, custom domain support, or tier availability.
OpenAI also merged Codex and ChatGPT into a single desktop application, consolidating coding and conversational interfaces under one client. Platform availability—Windows, macOS, Linux—was not specified.
