GPT-6 Astra, Sol and Luna arrive in ChatGPT but only in Work and Codex
OpenAI has added GPT-6 Astra, Sol and Luna to ChatGPT, but the models are available only in Work and Codex modes, not in regular Chat. Astra is pitched as OpenAI's most capable model for multistep tasks, while Sol and Luna are faster, cheaper variants.
- GPT-6 Astra, Sol and Luna are missing from the model picker in regular Chat
- Astra is called OpenAI's most intelligent and aligned model
- Sol and Luna are lighter and cheaper, trained with similar methods
- GPT-6 Pro powered by Astra is available in Chat on higher-tier plans
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