OpenAI Ships GPT-5.6 Sol, Terra, Luna and ChatGPT Work Agent

A model release and a new desktop product landed together this morning, and the interesting part is how OpenAI priced the range. GPT-5.6 ships in three tiers, Sol, Terra and Luna, at $5/$30, $2.50/$15 and $1/$6 per million input and output tokens, according to OpenAI's launch page. Terra is being pitched as similar performance to GPT-5.5 at roughly half the price, which is the tier most existing OpenAI customers will actually feel.

The pricing ladder matters more than the flagship benchmark chart. Sol is aimed at the hardest problems, complex coding and security research. Luna is the cheap workhorse for summarization, drafting and routine automation. Terra sits between them for high-volume business tasks like customer support, internal tools and document analysis. That gives buyers a real cost curve rather than a single sticker price, and it puts direct pressure on the per-token positioning of other frontier labs.

Alongside the models, OpenAI shipped ChatGPT Work, an agent that runs on a new ChatGPT desktop app for Mac and Windows and can act across local files, installed apps and a built-in browser. Axios reports that Codex has been folded into the ChatGPT desktop app on both platforms, that ChatGPT Work is available today for Pro, Enterprise and Edu plans with Plus and Business following in the next few days, and that it is powered by the new GPT-5.6 models. It can execute multi-step tasks and schedule work to run independently.

The release itself is politically loaded in a way worth flagging honestly. GPT-5.6 sat in a limited preview with roughly 20 government-approved partner organizations while the Commerce Department's Center for AI Standards and Innovation ran additional tests before clearing a broad rollout. What the reporting doesn't give you is the substance of those tests, whether the same review will gate future models, or the security model behind an agent that reads your local files and drives your installed apps. Take the pricing and platform coverage as reported; the guardrails around all of it are still being written.

For teams that have been waiting on cost-viable summarization or drafting at OpenAI quality, Luna at $1/$6 is the obvious near-term unlock. For anyone building serious cross-app automations, ChatGPT Work is now the surface to try before rolling your own.