OpenAI ships ChatGPT Work agent and GPT-5.6 Sol/Terra/Luna

There is a shape to the workday AI pitch now, and OpenAI just moved to occupy it. In a launch livestream hosted by Thibault Sottiaux, the company introduced ChatGPT Work, an agent inside ChatGPT that gathers information across your apps and workflows and produces finished materials like sheets, slides, docs, and web apps, alongside a new GPT-5.6 model family. According to The Decoder, the agent is rolling out today to Pro, Enterprise, and Edu users, with Plus and Business plans in the next few days.

The GPT-5.6 lineup arrives as three tiers rather than a single flagship. Sol is the top model, described by OpenAI as achieving state-of-the-art results across coding, knowledge work, cybersecurity, and science. Terra is the balanced everyday work model, and Luna is the fast and affordable one. API pricing per million tokens lands at $5 input and $30 output for Sol, $2.50 and $15 for Terra, and $1 and $6 for Luna. Free and Go users get Terra only, while Plus, Pro, Business, and Enterprise get all three, with an Ultra mode reserved for Pro and Enterprise inside ChatGPT Work.

The other structural move is that Codex has been folded into ChatGPT. There is now a single desktop app across Mac and Windows, users with the previous Codex app can update in place, and the existing ChatGPT app is being renamed ChatGPT Classic. The read is that OpenAI wants one surface for the developer and the knowledge worker, with Codex living as a mode rather than a separate product.

The honest caveat is that the "stays with complex projects for hours" framing is OpenAI's own claim, not an independently tested one, and none of the reporting I could find pins down the specific benchmarks Sol wins on, the permissioning model when the agent reaches into Slack, Google Drive, or SharePoint, or the task-length ceiling. Those are the questions any IT lead evaluating a Pro-tier rollout will want answered before the coming-days expansion to Plus and Business.

What is worth watching is the pressure this puts on the workplace incumbents. If ChatGPT Work actually ships finished artifacts across a standard SaaS stack, Microsoft Copilot and Google's Workspace AI have to defend per-seat pricing against an agent that treats their apps as tools rather than homes.