The new model family comes in three variants and powers a unified agentic workspace that combines coding, research, document creation, and workflow automation in a single interface
OpenAI announced on Thursday its latest flagship model family, GPT-5.6, alongside ChatGPT Work, a new agentic workspace designed to handle complex professional tasks without requiring users to switch between multiple tools. The launch represents the most direct challenge yet to enterprise productivity platforms from Anthropic, Google, and Microsoft.
Three Models, One Family
GPT-5.6 arrives in three variants built for different use cases and budgets. Sol is the flagship model for the most demanding tasks. Terra offers strong performance at lower cost, roughly comparable to the previous GPT-5.5. Luna is the fastest and most affordable option. OpenAI has also introduced configurable reasoning levels, allowing users to dial up computational effort for complex tasks or prioritise speed for simpler ones. An ultra reasoning mode is available initially to Pro and Enterprise subscribers. GPT-5.6 is now also the preferred model powering Microsoft 365 Copilot.
What ChatGPT Work Actually Does
ChatGPT Work is a new software that brings together Codex, OpenAI’s programming system and ChatGPT, creating a desktop, a mobile and a web app all in one. Users will be able to write and run codes, create reports, analyze data, website development, automate tasks and make presentation from one single interface.
A Delayed but Significant Launch
The release was postponed after consultations with the US government over cybersecurity and national security concerns, according to Reuters. The delay did not diminish the scale of the announcement. OpenAI is betting that businesses will consolidate their AI workflows around a single platform capable of researching, coding, creating, and automating simultaneously, a direct response to Anthropic’s Claude Cowork and Google’s expanding Gemini for Workspace suite.
Pricing starts at $1 per million input tokens for Luna, $2.50 for Terra, and $5 for Sol.
