---
type: Changed
pr: 2146
---
**Codex/OpenAI default models advance to the GPT-5.6 family (Sol/Terra/Luna)** — the Codex runtime tier defaults and the `openai` provider preset now resolve to current-generation model IDs instead of the superseded GPT-5.4/5.5 line, so Codex users on default profiles get improved agentic coding (Sol) and lower costs (Terra/Luna) without changing any config. (#2122)