OpenAI details GPT-6 Sol and Luna availability in Codex and ChatGPT Work
OpenAI says GPT-6 Sol and GPT-6 Luna are rolling out to Plus, Pro, Business, Enterprise, and Edu users in Codex and ChatGPT Work. Free and Go users can access Luna in the desktop app. Availability depends on rollout and workspace settings; Enterprise administrators must enable the models.
SessionWatcher editorial · Published · Updated · Source announcement: 2026-09-22
Related guide: How to check your Codex usage
Plans and surfaces
OpenAI says GPT-6 Sol and GPT-6 Luna are rolling out to Plus, Pro, Business, Enterprise, and Edu users. Free and Go users can access Luna in the desktop app. Availability depends on rollout and workspace settings, and Enterprise administrators must enable the models.
In ChatGPT, the models are available in Work and Codex, but not Chat. Select a model in the picker when it is available.
Sources: Openai release notes: 2026-09-22
Choosing a model in Codex
OpenAI recommends Sol for complex coding and agentic workflows, and Luna for focused, high-volume tasks. In the CLI, use /model or start a task with codex --model gpt-6-sol or codex --model gpt-6-luna.
The announcement says both models have lower token prices than their GPT-5.6 predecessors, but gives no specific rates. It points readers to pricing information for credit rates and usage.
Sources: Openai release notes: 2026-09-22
Corrections
2026-10-01: Updated factual details after a change in the linked official source.
AI assisted reporting, checked against the linked official sources. Source pages checked 2026-10-01. Editorial process and corrections.