Summary
On July 9, 2026, OpenAI made GPT-5.6 generally available in three tiers—Sol, Terra, and Luna—and launched ChatGPT Work, an agent that gathers context across a user's apps, decomposes goals into steps, and works autonomously for hours to return finished docs, sheets, slides, and web apps.
What changed
OpenAI released GPT-5.6 (Sol, Terra, Luna tiers) to general availability and introduced ChatGPT Work, a long-running agent that executes multi-step projects across connected apps.
Why it matters
OpenAI is repositioning ChatGPT from an assistant toward an outcome-delivering agent, competing directly with agent products from Anthropic, Google, and coding-agent vendors. Tiered models plus a work-completion agent target enterprise adoption where finished deliverables, not chat, are the value.
Evidence excerpt
OpenAI launched ChatGPT Work ... an agent inside ChatGPT that gathers context across your apps, breaks a goal into steps, and returns finished sheets, slides, docs, and web apps.