GPT-6 Sol and Luna appear in OpenAI docs, alongside guidance on reasoning effort
cedric_chee · x · 2026-09-23
Developer cedricchee spotted GPT-6 Sol and Luna now listed in OpenAI's developer docs, pointing to the official Model selection page explaining how to think about models and reasoning effort.
- The docs confirm GPT-6's arrival in the official model catalog, covering responses, reasoningeffort, prompt caching, Agents API, and realtime voice
- The core advice: choosing a model means picking the right model + reasoning effort combination, which directly affects cost and capability
- The restructured docs signal OpenAI is treating model selection and reasoning-effort tuning as first-class concepts for API developers
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