Arena raises $150M series a

Arena raised $150M in series a funding, announced on 6 January 2026, with participation from Felicis, Andreessen Horowitz, The House Fund, LDVP, Kleiner Perkins, Lightspeed Venture Partners, Laude Ventures, UC Investments. The round is tracked live by Fusion42 as part of the Raise fund database and the Scout startup database.

AI leaderboard platform providing crowdsourced model performance evaluation and commercial AI Evaluations service for enterprises. Arena is based in United States and currently at series a stage, operating in deeptech, AI.

Andreessen Horowitz, Kleiner Perkins and Lightspeed Venture Partners are profiled on Raise, Fusion42's database of venture funds — where each investor's thesis, cheque size and other tracked backings can be followed. This funding event is a citable node in Fusion42's market graph: it links Arena's Scout profile to the funds behind the round and to related Wire analysis, and is refreshed from public announcements as the round is confirmed or extended. It is the same live market data Arthur, Fusion42's AI co-founder, reasons over when benchmarking a founder's own raise against what is closing in the market right now.

Round details

Explore: Series A · United States

Verified 29 June 2026 · Sources: public filings