Models (GPT-5 variants)
- Removed: gpt-5-4-high, gpt-5-4-xhigh, gpt-5-5-high, gpt-5-5-medium, gpt-5-5-xhigh, gpt-5.4
→ Dropping multiple GPT-5 tiered/experimental model aliases.
No flag, endpoint, or host changes. No notable sitemap or robots.txt updates.