OpenAI launched GPT-6 Sol and Luna in ChatGPT Work and Codex, with API prices 50% below GPT-5.6 promotional pricing.

The supplied Telegram reports say OpenAI introduced GPT-6 Sol and GPT-6 Luna in ChatGPT Work and Codex for Plus, Pro, Business, and Enterprise users. A fuller message also lists Edu, and reports that the models use training methods similar to GPT-6 Astra.

The reported application programming interface (API) price reduction is 50% relative to GPT-5.6 promotional pricing (较其 GPT-5.6 促销定价下调 50%). The comparison is specifically against promotional pricing, not an unspecified standard list price; the messages do not provide absolute input- or output-token rates.

Availability is qualified by product surface: one message says Free and Go users can access Luna through the desktop application, while Sol and Luna are not yet available in chat (尚未在聊天中开放使用). Consequently, availability in ChatGPT Work should not be generalized to availability throughout every ChatGPT interface.

Separately, OpenAI reportedly announced plans for external organizations to assess safety during model training, evaluation, and rollout, rather than only shortly before release. The stated priorities include independence, scientific rigor, robust security practices, and clear responsibilities; the reports do not establish that a particular external assessment has already been completed for Sol or Luna.