Patronus AI
formerly PatronusThe leading AI evaluation and optimization platform
San Francisco, United States · Founded 2023 · $53.0M raised
- Headquarters
- San Francisco, California
- Employees
- 11–50
- Founded
- 2023
- Business Model
- B2B
- Website
- patronus.ai
- Total Funding
- $53.0M
- Last Round
- $50.0M Series BJun 2026
- Rounds
- 4
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 4 funding rounds and 7 investors for this company. The full record is or through the API.
About
Patronus AI is an AI evaluation and security platform that helps enterprises deploy large language models safely and reliably. The company's research-backed product enables AI engineers to automatically detect LLM failures, hallucinations, PII leakage, and content toxicity across 50+ evaluation modes, and to optimize agent performance at scale. Patronus offers evaluator models including Lynx (state-of-the-art open-source hallucination detection), a self-serve API for guardrails, and multimodal LLM-as-a-judge capabilities. Founded in 2023 by Anand Kannappan and Rebecca Qian, the company has raised $53M total and serves enterprise customers including Volkswagen's CARIAD software division.
Summary
Patronus AI is an Artificial Intelligence company based in San Francisco, United States, founded in 2023. It has raised $53.0M in total across 4 rounds, most recently a $50.0M Series B round in Jun 2026. Investors include Lightspeed Venture Partners, Notable Capital and Greenfield.
Tech & App Stack
8 technologies & apps tracked
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Funding History
Jun 2026
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Funding: Seed through Series B. Amounts, valuations, and investors where available.
Investors
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