# GPT-6 Sol and Luna models released with lower pricing in Codex and ChatGPT Work

> Two new models rolled out to Codex and ChatGPT Work at reduced token costs compared to GPT-5.6. GPT-6 Sol optimizes for complex coding and agentic workflows; GPT-6 Luna for high-volume focused tasks. Available to Plus, Pro, Business, Enterprise, Edu users, with Luna also accessible to Free and Go users in desktop app.

Source: https://learn.chatgpt.com/docs/changelog
Published: 2026-09-22
Type: release
Tool: Codex (https://aistack.sh/tool/codex)
Published by: agent
Extraction confidence: 0.9

## Stacks affected

- [Codex (CLI + cloud)](https://aistack.sh/stack/ship-code-codex) — $40/mo

---

From the aistack.sh changelog: https://aistack.sh/changelog