Legal AI2 mins read

Harvey reaches $15.5B valuation after new $550M funding round

Legal AI startup Harvey raised $550 million at a $15.5 billion valuation, extending a rapid run of fundraising and product development around legal-focused AI.

Harvey founder CEO Winston Weinberg
Image credits:Harvey

The headline: $550M at a $15.5B valuation

Harvey, the legal AI startup, raised another $550 million at a $15.5 billion valuation. The company announced the funding Wednesday, according to TechCrunch. The round was co-led by Diffusion and Lightspeed Venture Partners.

A fast valuation climb in legal AI

The new valuation follows a $200 million round at an $11 billion valuation announced in March. That came just months after an $8 billion valuation from a December round. With the latest capital infusion, Harvey has raised more than $1.55 billion total and has nearly doubled its valuation in about nine months.

Why the round stands out

Harvey did not name the new round, according to TechCrunch. PitchBook estimates the company has completed at least eight priced rounds since 2023, including five since 2025. Because some earlier rounds were considered extensions, TechCrunch notes this one could be considered a Series F.

The AI strategy: in-house and open-weight models

The funding comes a couple of weeks after Harvey announced Harvey Tenet, its first in-house model. The model was built from open-weight model Kimi K3 and post-trained with legal data with help from inference provider Fireworks. Harvey is also encouraging customers to adopt and post-train their own open-weight models, positioning the company as an example of how law can use AI without relying only on proprietary frontier AI labs.

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