New Model Law Firm Arceus Legal Raises $17M

Scale: $17M led by Greycroft (Craft Ventures, South Park Commons participating).
Significance: High
Confidence: Confirmed

Why this matters

Arceus Legal is putting capital behind AI. This is a high-significance signal for buyers benchmarking their panel.

Arceus Legal, a San Francisco AI-native law firm (MSO model), raised $17M to scale flat-fee commercial contract review with an eight-hour turnaround guarantee, powered by its CounselOS operating system; customer base quadrupled in September and 12,000+ contracts reviewed. Quote: "The billable-hour model just didn't make sense to me because firms are incentivized to take longer." — Mac Liu, Founder/CEO.

Scale / Terms: $17M led by Greycroft (Craft Ventures, South Park Commons participating).
Significance: High
Source type: Trade Press

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