2025 is shaping up as the breakout year for legal AI. Investors have already poured billions into startups promising faster contract reviews, smarter copilots, and plaintiff-side automation. For lawyers and in-house teams, the question isn’t if AI will transform workflows—it’s which tools will lead the way. Below, we highlight 10 legal tech startups that have raised serious funding and are reshaping how the industry works.
Harvey
What it is: Full‑stack legal copilot for research, drafting, and analysis.
Why watch: Massive round + enterprise adoption; building domain‑specific reasoning on top of frontier models.
Latest funding: $300M Series E at $5B valuation (June 23, 2025).
Best for: AmLaw 100/Global 200, complex advisory work.
Luminance
What it is: Contract review/negotiation with legal‑grade AI; strong in regulated sectors.
Why watch: Mature product breadth + rapid go‑to‑market.
Latest funding: $75M Series C (Feb 18, 2025); >$115M raised over prior 12 months.
Best for: In‑house teams standardizing playbooks across regions.
Spellbook
What it is: Contract drafting assistant embedded in Microsoft Word (first‑drafts, clause suggestions).
Why watch: Clean UX + strong SMB–mid‑market traction.
Latest funding: $20M Series A (Jan 2024).
Best for: Lean legal teams that live in Word.
Robin AI
What it is: Legal copilot for contract review + negotiation tracking.
Why watch: Velocity + customer conviction (customers participated in follow‑on raise).
Latest funding: $26M Series B (Jan 2024) and additional $25M later in 2024.
Best for: Mid‑market to enterprise CLM/PLM workflows.
EvenUp
What it is: Plaintiff‑side AI for demand packages, med summaries, and workflow scale.
Why watch: Category leader in PI; unicorn valuation with product expansion.
Latest funding: $135M Series D (Oct 2024), >$1B valuation.
Best for: PI & mass‑tort firms (and litigation‑finance backed shops).
Supio
What it is: AI platform for PI/mass‑tort (signals, drafting, analytics).
Why watch: Rapid growth and follow‑on capital.
Latest funding: $60M Series B (Apr 30, 2025).
Best for: High‑volume plaintiff practices pursuing scale.
Eve
What it is: AI‑native platform for plaintiff firms; introducing reasoning modes for complex analysis.
Why watch: Tier‑one investors; fast product tempo.
Latest funding: $47M Series A (Jan 2025).
Best for: Plaintiff firms building data‑driven case ops.
Paxton AI
What it is: Research + drafting copilot focused on SMB/mid‑market firms and scrappy in‑house teams.
Why watch: Compelling price‑to‑value vs. enterprise copilots.
Latest funding: $22M Series A (Jan 29, 2025; total $28M to date).
Best for: Solos to ~50‑lawyer boutiques.
Genie AI
What it is: UK‑born “agentic” legal editor with growing U.S. footprint; strong template library.
Why watch: Backed by GV (Google Ventures), pushing agentic drafting flows.
Latest funding: £13.3M Series A (Oct 23, 2024).
Best for: Firms systematizing knowledge + clause reuse.
Patronus AI
What it is: Automated LLM evaluation & safety—catches hallucinations, regressions, and risk before production.
Why watch: As legal teams scale AI, eval/guardrails become non‑negotiable.
Latest funding: $17M Series A (May 22–23, 2024; total $20M).
Best for: Any org deploying multiple AI models or vendors.
The surge of capital into legal AI in 2024–2025 is more than hype—it’s a signal that the profession is entering a new operating model. From copilots like Harvey to plaintiff platforms like EvenUp and Supio, these startups are not just building tools, they are reshaping how legal services are delivered. For lawyers and in-house counsel, the opportunity is clear: start piloting, set guardrails, and understand where AI can deliver the most value. The firms that lean in now will be the ones setting the standard by 2026 and beyond.
