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Vellum (Software Development Applications)

New York, NY · Founded 2023 · Privately Held (backing)

Developer of an AI development platform designed to obtain optimal cost and quality for large language models. Vellum (Software Development Applications) is based in New York, NY and was founded in 2023. Its last reported valuation was $90 million in May 2025. It has raised $24.5 million.

Last reported valuation
$90.0M
Oct 2026
Priced at
—
Total raised
$24.5M
Last round
—

Vellum (Software Development Applications) key facts

as of Oct 2026
  • Developer of an AI development platform designed to obtain optimal cost and quality for large language models.
  • Vellum (Software Development Applications) is valued at approximately $90.0M as of Oct 2026 (last reported valuation).
  • It has raised $24.5M; the latest was Early Stage VC ($15.0M) in May 2025.
  • Notable investors include Y Combinator, Pioneer Fund, Rebel Fund, Orange Collective, Arash Ferdowsi — 15 tracked in total.
  • Status: Privately Held (backing).
Last reported valuation
LOW confidence
$90.0M

Vellum (Software Development Applications)'s last reported valuation, May 2025. Nothing priced has surfaced since.

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Vellum (Software Development Applications) funding rounds

No rounds on record

No funding rounds for Vellum (Software Development Applications) are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.

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Vellum (Software Development Applications) valuation

Vellum (Software Development Applications)'s last reported valuation was $90 million in May 2025. No priced round, secondary trade or fund mark has surfaced since.

Vellum (Software Development Applications) investors

15 investors are on record for Vellum (Software Development Applications), including Y Combinator, Pioneer Fund, Rebel Fund and Orange Collective. By type, the record holds 4 venture capital firms and 2 angel investors.

About Vellum (Software Development Applications)

Developer of an AI development platform designed to obtain optimal cost and quality for large language models. The company's API serves as a trustworthy intermediary to large language model application providers and gathers model inputs, outputs, and user comments to build up important training data to enhance proprietary models, enabling customers to efficiently make version-controlled modifications to prompts.

Sector
Information Technology
HQ
New York, NY, United States
Founded
2023
Employees
37
Website
vellum.ai/
Ownership
Privately Held (backing)

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