Codex 0.156.1 adds GPT-6 Sol and GPT-6 Luna to model picker
github-actions[bot] · ghdev · 2026-09-23
openai/codex shipped rust-v0.156.1, adding GPT-6 Sol and GPT-6 Luna to the model picker, with the rate-limit switch prompt now recommending GPT-6 Luna. It's the first time GPT-6 family codenames appear in a shipped product catalog, suggesting the GPT-6 series is in internal rollout despite no official announcement.
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