open_ai: Add GPT-6 Sol and Luna BYOK support (#64628)

# Objective

- Make GPT-6 Sol and GPT-6 Luna available through OpenAI API keys.

## Solution

- Add both models with their documented limits and capabilities,
including effort-dependent sampling behavior.

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

---

Release Notes:

- Added GPT-6 Sol and GPT-6 Luna support to the OpenAI provider.

Co-authored-by: Anant Goel <anant@zed.dev>
bc6dd34d4cBen Kunkle committed on 9/23/2026, 1:32:39 AM· committed by GitHubparent75e9bb2
3 files changedLine totals unavailable