Summary: Arena Leaderboard adds video and search rankings

Why It Matters: The platform now tracks how AI models perform at making videos and searching the web, not just writing text.

What Changed:

• Added new ranking categories for Text-to-Video and Image-to-Video models.
• Added a dedicated leaderboard for AI Search and grounding capabilities.
• Updated the homepage to show a "Leaderboard Overview" with snapshots of different model types.
• Included new "thinking" model variants from Anthropic, Google, and OpenAI in the rankings.
• Changed the site title to emphasize "Frontier AI Models."