# clm_FB7688228F76

subject: ChatGPT (/record/chatgpt.md)  
predicate: default_model  
value: [GPT-6 Luna](/record/gpt-6-luna.md)  
valid_from: 2026-10-08  
valid_to: null  
published: 2026-10-07  
recorded: 2026-11-13  
confidence: 0.90  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-13  
cite: AsOf. "ChatGPT default model: GPT-6 Luna", as of 2026-10-08. Claim clm_FB7688228F76, https://asof.is/claim/clm_FB7688228F76, accessed 2026-11-13. Source: https://help.openai.com/en/articles/6825453-chatgpt-release-notes.  
checked: 2026-11-13 · admin  

> The rollout starts globally today for Plus, Pro, Business, and Enterprise in the Chat tab, and expands to Free and Go starting tomorrow. Enterprise availability depends on workspace admin settings. Plus, Pro, Business, and Enterprise use GPT-6 Sol; Free and Go use GPT-6 Luna.

What https://help.openai.com/en/articles/6825453-chatgpt-release-notes says, word for word.

## Sources

- https://help.openai.com/en/articles/6825453-chatgpt-release-notes (primary, OpenAI Help Center, published 2026-10-07)

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