# Vellum

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/vellum

- Industry: Software
- Headquarters: New York, US
- Website: www.vellum.ai
- Total disclosed funding: $20M
- Latest round: Series A (Jul 10, 2025)
- Investors on record: 6

## About

Based in New York, US, and founded in 2023 by CEO  Akash Sharma and CTO Noa Flaherty, Vocify Inc., doing business as Vellum, operates as a developer of an artificial intelligence-based platform for building applications on large language models. In July 2025, Vellum raised USD 20 million in series A funding led by new investor Leaders Fund, with participation from another new investor Socii Capital. Returning investors Y Combinator, Rebel Fund, Pioneer Fund, and Eastlink Capital also participated in the round. Vellum provides a background tool for prompt engineering for cross-provider support, test cases and quantitative evaluation, and history tracking and collaboration. The company offers Vellum Search for training LLMs on clients’ computers to collect related data and use it as context in LLM calls. In addition, the company provides Vellum management for users to change the prompt through APIs, quantitative testing, version control, observability, and monitoring. As of 2023, the company’s client base includes PYQ, Left Field Labs, Uberduck, Vimcal, Feeling Good App, Bemlo, Encore, and many more. The company will use the July 2025 funding for product development and to expand its market reach.

## Funding rounds

- Series A, Jul 10, 2025, $15M — Y Combinator, Leaders Fund, Eastlink Capital, Pioneer Fund, Socii Capital, Rebel Fund
- Seed, Jul 11, 2023, $5M — Y Combinator, Eastlink Capital, Pioneer Fund, Rebel Fund

## Investors

- Y Combinator (https://capitalatlas.ai/funds/y-combinator) — Seed, Series A
- Eastlink Capital (https://capitalatlas.ai/funds/eastlink-capital) — Seed, Series A
- Pioneer Fund (https://capitalatlas.ai/funds/pioneer-fund) — Seed, Series A
- Rebel Fund (https://capitalatlas.ai/funds/rebel-fund) — Seed, Series A
- Leaders Fund (https://capitalatlas.ai/funds/leaders-fund) — Series A
- Socii Capital (https://capitalatlas.ai/funds/socii-capital) — Series A