A

Arena

AIAI EvaluationB2B📍 United States

Arena has raised $200 million in Series B funding at a $3.1 billion valuation to expand its platform for evaluating frontier AI models and agents. The company is moving beyond capability measurement to assess AI safety and alignment with human intent, reporting over $100 million in annualized revenue. The funding will support the development of independent evaluation infrastructure for increasingly autonomous AI systems.

Total raised
Undisclosed
tracked to date
Latest round
Series B
Oct 8, 2026
Known investors
9
led by Lightspeed Venture Partners
Press coverage
4
outlets tracked

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🏆 Featured in Datapile’s Q4 2026 USA Funding Report

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Funding history

  1. 1
    $200 Million Series BSeries BOct 8, 2026

    Led by Lightspeed Venture Partners

    Announcement ↗

Investors in Arena

Backers from this company's tracked funding rounds.

  • LLightspeed Venture PartnersLead investorVC firm
  • KKhosla VenturesVC firm
  • SSalesforce VenturesVC firm
  • 001 AdvisorsVC firm
  • DDell Technologies CapitalVC firm
  • EEndeavor CatalystVC firm
  • AAndreessen HorowitzVC firm
  • FFelicisVC firm
  • Aa16zVC firm

Arena in the news

Coverage of this company's funding, tracked by Datapile.

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