Arena Raises $200M Series B at $3.1B Valuation

AI evaluation startup Arena, the team behind LMArena from UC Berkeley SkyLab, raised $200M in Series B funding at a $3.1B valuation from investors including a16z, and launched its agent safety Alignment Index.

2026-10-13 ~ 2026-10-13 · 2 related posts

• Arena raises $200M Series B at $3.1B valuation, launches Alignment Index — arena · 2026-10-13

1 near-duplicate retellings: arena