# Arena Completes $200 Million Series B Financing

- Category: Flash (快讯)
- Published: 2026-10-09T11:54:00.000Z
- Source date: 2026-10-09
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AI model evaluation platform Arena announced the completion of a $200 million Series B financing round, reaching a valuation of $3.1 billion. The round was led by Lightspeed and Khosla, with participation from a16z, Salesforce, and others. Since its Series A in January, its valuation has nearly doubled within ten months, while annual recurring revenue grew from $30 million to $100 million.

## At a glance

- Arena completes $200M Series B at $3.1B valuation, nearly doubling in 10 months
- Annual recurring revenue grew from $30M in January to $100M in June

## The update

AI model evaluation platform Arena has officially announced the completion of a $200 million Series B financing round, bringing its valuation to $3.1 billion. The round was co-led by Lightspeed and Khosla Ventures, with participation from prominent firms such as a16z and Salesforce. Notably, just ten months after completing its Series A in January, Arena's valuation has nearly doubled, reflecting strong market confidence in its business growth. Originating from a 2023 research project at the University of California, Berkeley, Arena primarily ranks and evaluates various AI models through crowdsourcing. As its business scale expands rapidly, its financial performance has been impressive. Data shows that the company's annual recurring revenue has surged from $30 million in January to $100 million in June, demonstrating its strong momentum and commercial potential in the AI evaluation sector.

## Sources

- [Z Potential](https://mp.weixin.qq.com/s/ERCEgh55oR04I7GRVcsK5g) (2026-10-09)

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