Summary: Grok launches Grok 4 Fast

Why It Matters: This shows a new, faster version of their main product.

What Changed:

• A new news item for "Grok 4 Fast" was added.
• The date for the new news item is September 19, 2025.
• The old news item "Grok Code Fast 1" moved down the list.
• The news item "Announcing Grok for Government" was removed.