Summary: GPT-5 launched, replacing older models.

Why It Matters: This shows a big update to their main AI model.

What Changed:

• Removed "API Platform" from the main navigation.
• Added "For Developers" to the main navigation.
• Updated the "Latest Advancements" section to show "GPT-5" and "OpenAI o3 and o4-mini".
• Removed "GPT-4.5", "OpenAI o3-mini", "OpenAI o1", "OpenAI o1-mini", and "GPT-4o mini" from "Latest Advancements".
• Added a new section about "GPT-5 is here" with details about it being their "smartest, fastest, and most useful model yet."
• Removed many older news and story articles.
• Added new news articles about "GPT-5" and "Stargate advances with 4.5 GW partnership with Oracle".
• Added new story articles about "Coding and design with GPT-5", "Creative writing with GPT-5", and "Medical research with GPT-5".
• Updated the "OpenAI for business" section with new examples.
• Updated the "Our Research" section to show "OpenAI o3" and "OpenAI o4-mini".
• Removed "OpenAI o1" and "OpenAI o1-mini" from "Our Research".
• Added "Trust & Transparency" under "Safety".
• Updated the "For Business" menu to include "Business Overview", "Solutions", "ChatGPT Pricing", "API Pricing", and "Contact Sales".
• Added a new "For Developers" menu with "API Platform", "API Pricing", "Codex", "Open Models", and "Community".
• Removed "Security" from the "Terms & Policies" section.
• Added "Livestreams" and "Podcast" under "More".
• Added "Manage Cookies" and "English United States" at the very bottom.