The facts
OpenEvidence at a glance.
Read Oct 20, 2026. Valuations and amounts are copied as each source states them; a figure that is only reported (talks, or people familiar with the deal) is labeled as reported.
- Kind of company
- Law, medicine, finance and defenseAI built for one profession or industry.
- Based in
- United States
- Founded
- Not found in our sourcesForbes Colombia, Jan 23, 2026
- Last closed-round valuation
- $12B$12 billion (Reuters, Jan 21, 2026)
- What it has shipped
- Has a product
Founders
- Daniel Nadler: CEO and co-founder; sold his first startup, Kensho Technologies, to S&P in 2018 (per Forbes Colombia) (Forbes Colombia, Jan 23, 2026)
- Zachary Ziegler: co-founder; background not stated (Forbes Colombia, Jan 23, 2026)
Series D of $250 million at $12 billion valuation (latest round verified on a fetched page) Jan 21, 2026
Reuters, Jan 21, 2026
What it has built
Shipped, or not yet.
“Has a product” is what our search found: something the public can use or buy, a model or API, research only, or nothing public.
2 rounds
Funding, as reported.
Every round we found, with the amount, valuation and investors as the source states them.
| When | Round | Amount | Valuation | Investors named | Source |
|---|---|---|---|---|---|
| Oct 2025 | unnamed | roughly $200 million | $6 billion | None named | Reuters (via WDEZ), citing PitchBook |
| Jan 21, 2026 | Series D | $250 million | $12 billion | Thrive Capital (co-lead), DST Global (co-lead) | Reuters |
Our note
Worth knowing.
Our note: Usage figures are company-reported. Forbes Colombia says annualized run rate passed $100 million in 2025, driven by advertising. Founding year not stated: Forbes Colombia says Nadler launched it 'three years ago' (January 2026). A September 2026 Business Insider report of about $250 million at $15 billion (from people familiar) could not be fetched, so it is listed as unverified.
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