Patronus AI
patronus.ai
Actively hiring
Artificial Intelligence
AI Safety & Alignment
AI Research Labs
AI Evaluation & Observability
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News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$87.1M
3 rounds on record
Latest round
$50M
Series B · Jun 2026 · 3 mo ago
Team
10
US Form 5500 (plan participants) · Dec 2025 · -9% in a year
Hiring now
7
+4 posted in 30 days
Backers
1
Notable Capital
The money's age
Fresh money
3 months since the last round · and hiring
Momentum
68/100
hiring for its size, a new city, in the news, fresh money
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Jun 25
Raised a round Series B $50M
Dec 17, 2025
Launched Patronus AI unveils generative simulators · Venturebeat
May 14, 2025
Launched Patronus AI debuts new Percival tool for fixing AI agent malfunctions · SiliconANGLE
Mar 13, 2025
Launched on Hacker News Show HN: Multimodal LLM-as-a-Judge
Dec 19, 2024
Launched Patronus AI Launches Small, High-Performance Judge Model for Fast and Explainable AI Evaluations · PRNewswire
May 22, 2024
Raised a round Series A $17M
Nov 17, 2023
Launched Patronus AI Patronus AI launches FinanceBench, the industry's first benchmark for LLM performance on financial questions · patronus.ai
2023
Founded
Tractionpublic signals, read monthly
Web presence
top 0.31%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series B | Jun 2026 | $50M | — | morningstar.com |
| Venture round | May 2024 | $20.1M | — | SEC Form D |
| Series A | May 2024 | $17M | — | streetinsider.com |
Registers and programsofficial lists and records that name the company
| Legal entity | Patronus AI, Inc. | its site |
Founders and leadersfrom filings, registers and the company's site
Anand KannappanExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Notable Capital Investors in similar startupsfunds that back the companies most like this one
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Overview
Headquartered in San Francisco, California, Patronus AI is an artificial intelligence security and evaluation company that enables enterprise teams to build reliable large language model applications. Founded in 2023, the firm provides an automated platform that performs adversarial red-teaming, hallucination detection, and real-time observability across generative AI outputs.
News
Patronus AI Raises $50 Million Series B and Unveils First Digital World Models for AI Agent Training and Simulation
/PRNewswire/ -- Patronus AI today announced a $50 million Series B led by Greenfield Partners and unveiled its Digital World Models, a new class of large-scale...
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Report
Patronus AI lands $50M to build 'digital worlds' that stress-test AI agents
Agent-testing startup Patronus AI, founded by former Meta AI researchers, is experiencing nearly insatiable demand, its investor says.
Read more
Report
Patronus AI Raises $50 Million Series B and Unveils First Digital World Models for AI Agent Training and Simulation
Read more
Report
patronus-studio/wolf-defender-prompt-injection Hugging Face
We're on a journey to advance and democratize artificial intelligence through open source and open science.
Read more
Report
DETOUR: An Interactive Benchmark for Dual-Agent Search and Reasoning
Abstract page for arXiv paper 2602.00352v1: DETOUR: An Interactive Benchmark for Dual-Agent Search and Reasoning
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Report
Benchmarking Reward Hack Detection in Code Environments via Contrastive Analysis
Abstract page for arXiv paper 2601.20103: Benchmarking Reward Hack Detection in Code Environments via Contrastive Analysis
Read more
Report
Patronus AI's debuts Generative Simulators to support continuous evolution and improvement of AI agents
Patronus AI's debuts Generative Simulators to support continuous evolution and improvement of AI agents - SiliconANGLE
Read more
Report
Report
Patronus AI debuts new Percival tool for fixing AI agent malfunctions
Patronus AI debuts new Percival tool for fixing AI agent malfunctions - SiliconANGLE
Read more
Report
Show more news
Tech stack
Technologies named in job postings at Patronus AI over the last 12 months, by layer, with the share of postings for each.
Technologies in use
38
Postings analysed
12
Stack modernity
82/100AI adopter
Languages
Python50%
TypeScript33%
JavaScript33%
Go17%
Frameworks & libraries
Next.js33%
React.js33%
Playwright33%
Selenium33%
Databases
SQLite17%
PostgreSQL8%
Cloud & platforms
Kubernetes25%
GitHub8%
Hugging Face8%
Linux8%
AI & ML
Claude8%
LLM8%
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Full Patronus AI tech stack
38 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$270k
Typical range
$200k – $300k
Open positions
6
4
Jobs
Senior
25%
Staff
50%
Architect
25%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Senior | 1 | $225k | $225k |
| Staff | 2 | $300k | $300k |
| Architect | 1 | $290k | $290k |
Highest paying role
Member of Technical Staff - Research
$300k
Normalized to USD per year
All salaries at Patronus AI
By role, level and city, against the market · 6 jobs with pay
People
Anand Kannappan
Executive Officer, Director
Glenn Solomon
Director
Rebecca Qian
Director
Nnamdi Iregbulem
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
85/100
Scaling fast
Open positions
6
4 opened / 6 closed in 30 days
Median time-to-fill
37 days
faster than 35% of the market
ATS activity
Every ~3 hours
10/07/2026
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
36% ▲
Product
27% ▼
HR
18% ▲
Finance
9% ▲
Management
9% ▼
Activity Timeline
New location: India
Sep 2026
Added GitHub to stack
Sep 2026
Added arXiv to stack
Sep 2026
Added Linux to stack
Sep 2026
Added Machine Learning to stack
Sep 2026
Added Agentic Workflows to stack
Sep 2026
Added Tool Use to stack
Sep 2026
Added Model Distillation to stack
Sep 2026
Added Reward Modeling to stack
Sep 2026
Added SLURM to stack
Sep 2026
Added LLMOps to stack
Sep 2026
Added LLM to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
HQ
San Francisco
6 open roles 10 posted in 90 days 33% engineering 50-200 est. staff $261k Avg Salary
hires for AI/ML, Product, Finance
Jobs
$160k – $300k per year • In office • Bachelor's Degree • San Francisco
Python
Go
JavaScript
TypeScript
Cursor
Claude Code
Reinforcement Learning
Function Calling
AI Agents
LLMOps
OpenAI Codex
Tool Use
Reward Modeling
Machine Learning
Frontend
Next.js
React.js
DevOps
CI/CD
Kubernetes
QA
Selenium
Playwright
Apply
$175k – $300k per year • Equity • In office • Master's Degree • San Francisco
Python
Reinforcement Learning
Knowledge Distillation
AI Agents
NLP
SFT
GRPO
Post-training
Model Distillation
Machine Learning
Apply
$125k – $250k per year • Equity • In office • Bachelor's Degree • San Francisco
Claude
Reinforcement Learning
AI Agents
Machine Learning
Apply