Vellum
vellum.ai
Actively hiring
LLM & Generative AI
AI Evaluation & Observability
AI Development Tools
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Salaries
Products
People
Growth
Offices
Financials
Funding and backers
Total raised
$25M
2 rounds on record
Latest round
$20M
Series A · Jul 2025 · 15 mo ago
Team
11-50
employees, estimated range
Backers
1
Y Combinator
The money's age
Due for its next round
15 months since the last round · not hiring
Momentum
15/100
rising traction
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
Apr 30
Released an app Vellum Assistant · App Store
Jul 10, 2025
Raised a round Series A $20M
Jul 11, 2023
Raised a round Venture round $5M · TechCrunch
Jan 2023
Went through Y Combinator
2023
Founded
Tractionpublic signals, read monthly
Web presence
top 0.02%
of 133.2M domains by links, Common Crawl
App Store
4.2 ★
18 ratings
Hacker News stories
10
best: 19 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series A | Jul 2025 | $20M | — | businesswire.com |
| Venture round | Jul 2023 | $5M | — | TechCrunch |
Backed byfrom the funds' portfolios and accelerator catalogs
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Overview
Vellum is a San Francisco company founded in 2023 that provides a development platform for large language model applications. It combines prompt engineering, evaluation, workflow orchestration and production monitoring so teams can compare models and ship changes with evidence. Product and engineering teams use it as a shared workspace for building AI features.
News
LLM Agents: The Six Levels of Agentic Behavior
A look at AI's evolution from basic, rule-based systems to fully creative agentic workflows.
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AI psychosis is real, and you probably have it
Karpathy, Garry Tan, and Harvard researchers are all describing the same thing: AI tools are triggering addiction loops in their most enthusiastic users.
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The ultimate LLM agent build guide
Follow this practical guide to learn how to build effective LLM agents for yourself, your team or your customers.
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Report
Vellum.ai获得2000万美元A轮融资_腾讯新闻
Vellum.ai是一家生成式人工智能服务提供商致力于帮助企业改进生成式人工智能提示Vellum.ai为人工智能提示器提供了一种并排比较模型输出的方法还提供了搜索公司特定数据的能力以便为特定提示添加上下文或进行测试和版本控制以确保输出内容的准确性近日Vellum 获得 2000 万美元 A 轮融资由 Leaders Fund 领...
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Report
Vellum Raises $20M Series A to Bring Rigor, Speed and Reliability to Enterprise AI Development
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Report
Vellum Will Leave Early Access At The Start Of May
After being in Early Access for several months, Vellum has confirmed that the full release will be launched at the start of May
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Report
Vellum Publishes State of AI Development Report: AI Adoption to Increase in 2025 - Despite Lingering Challenges
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Report
Cursor AI is god tier
I'd Pay $2,000 Out of My Own Pocket to Keep Using Cursor - The tab + context is next level.
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Report
LLM Benchmarks in 2024: Overview, Limits and Model Comparison
Understand the latest benchmarks, their limitations, and how models compare.
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Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
San Francisco
United States
HQ
10-50 est. staff