The Legal Tech Map › Legal AI platforms and assistants
Sandstone
AI workspace for in-house legal teams: intake, triage, agentic drafting and redlining, and legal knowledge
Sandstone builds an operating system for corporate legal departments, designed around AI from the start, which handles legal intake and triage, runs agents for drafting and redlining, and keeps a record of legal relationships and knowledge. Vercel, Wayfair, Mercury and Patreon appear as logos on its site. It launched in January 2026 with a $10M seed led by Sequoia and raised a $30M Series A, led by Lightspeed, in June 2026.
- Market
- Legal AI Platforms, In-house legal teams
- Based in
- New York, United States
- Stage
- Series A
- Total raised
- $40M
- Founders
- Nick Fleisher (CEO)
- Website
- sandstone.com
Funding and deals
- 2026-06: Series A, $30 million, led by Lightspeed Venture Partners
- 2026-01: Seed, $10m, led by Sequoia
Investors
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