The startup behind a popular AI model leaderboard has raised a new round of funding at a $3.1 billion valuation https://www.bloomberg.com/news/articles/2026-10-08/ai-model-evaluator-arena-valued-at-over-3-billion-in-round?taid=6ac7f2c68ff35e0001f90ce2&utm_campaign=trueanthem&utm_content=business&utm_medium=social&utm_source=twitter