Arthur
arthur.ai
Actively hiring
Information Security
Machine Learning
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$59.7M
3 rounds on record
Latest round
$2.7M
Venture round · Jul 2026 · 2 mo ago
Team
11-50
employees, estimated range
Hiring now
2
open roles
Backers
2
Greycroft, Index Ventures
The money's age
Fresh money
2 months since the last round · hiring slowed
Momentum
35/100
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
Aug 10
Board appointment Jonathan Lehr, Director · SEC Form D
Jul 21
Raised a round Venture round $2.7M · SEC Form D
Dec 17, 2025
Launched Arthur Releases the First Enterprise Platform Built for Agentic Discovery and Governance · PRNewswire
Dec 5, 2023
Launched Arthur Debuts Arthur Chat: Fast, Safe, Custom AI for Business · PRNewswire
Aug 17, 2023
Launched Arthur Introduces Arthur Bench, An Open-Source AI Tool to Help Businesses Navigate the Complex World of Large Language Model Selection · PRNewswire
May 4, 2023
Launched Arthur Debuts Arthur Shield: The First Firewall for Large Language Models like ChatGPT · PRNewswire
Sep 27, 2022
Raised a round Series B $42M · led by Acrew Capital · PRNewswire
Jul 6, 2021
Recognition Arthur named a 2021 Gartner Cool Vendor in AI Governance and Responsible AI · PRNewswire
Dec 9, 2020
Raised a round Series A $15M · TechCrunch
2019
Founded
Tractionpublic signals, read monthly
Web presence
top 0.34%
of 133.2M domains by links, Common Crawl
Hacker News stories
15
best: 17 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Jul 2026 | $2.7M | — | SEC Form D |
| Series B | Sep 2022 | $42M | Acrew Capital lead, Greycroft lead | PRNewswire |
| Series A | Dec 2020 | $15M | — | TechCrunch |
Registers and programsofficial lists and records that name the company
| Legal entity | Arthur AI, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Adam WenchelExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Greycroft 
Index Ventures Investors in similar startupsfunds that back the companies most like this one
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News
Report
Depression has tripled in the last 15 years. Arthur Brooks says he knows the real cause
Arthur Brooks studies happiness for a living, and he says the epidemic of depression and anxiety among young adults comes down to one culprit: a meaning crisis.
Read more
Report
How Queen Caroline turned King Arthur into an 18th-century royal PR strategy
Caroline's use of Arthurian iconography sought to promote a shared British identity at a time of political uncertainly.
Read more
Report
AI-SPM buyer's guide: 14 tools to secure your AI infrastructure
CISOs looking to secure AI systems and data should consider the following options in the quickly evolving AI security posture management (AI-SPM) market.
Read more
Report
AI Agent Debugs Postgres I/O Spike & Invents a Crisis
An AI agent debugged our Aurora Postgres I/O spike-and invented a crisis that never existed. Learn why human in the loop matters in agentic SRE workflows.
Read more
Report
Mistral to explore designing own chips, CEO says, as it ramps up infrastructure build
Mistral's semiconductor ambitions underscore the French startup's bid to control more of its infrastructure as it competes with OpenAI and Anthropic.
Read more
Report
Medieval King Arthur manuscript could fetch £2m at auction
Book containing early versions of the Merlin and Grail legends has remained in private hands for 700 years
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Report
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Tech stack
Technologies named in job postings at Arthur over the last 12 months, by layer, with the share of postings for each.
Technologies in use
5
Postings analysed
2
Stack modernity
81/100AI adopter
Languages
SQL
AI & ML
LLM
Practices & domains
AI Agents
LLM Guardrails
LLM Evaluation
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People
Adam Wenchel
Executive Officer, Director
Mike Volpi
Director
Michelangelo Volpi
Director
Theresia Gouw
Director
Jonathan Lehr
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
59/100
Growing
Open positions
2
0 opened / 0 closed in 30 days
ATS activity
Every ~3 hours
Today
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.
Product
100% ▼
Activity Timeline
New location: Washington
Aug 2026
Added LLM Guardrails to stack
Aug 2026
Added LLM Evaluation to stack
Aug 2026
Offices
Where the company hires and what each office is for
Cities
2
Hiring now
2
Countries
1
Busiest office
Washington
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Headquarters
Builds here
Office with open vacancies
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Washington
United States
HQ
1 open roles 1 posted in 90 days 10-50 est. staff $250k Avg Salary
hires for Product
New York
United States
Engineering / R&D
2 open roles 1 posted in 90 days 10-50 est. staff $235k Avg Salary
hires for Product, Solutions
Jobs
$190k – $250k per year • In office • Full-Time • New York • Washington
AI Agents
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$170k – $220k per year • Hybrid • Full-Time • New York
SQL
AI Agents
LLM
LLM Evaluation
LLM Guardrails
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