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DirJournal Editorial Verdict

Vellum AI is listed on DirJournal under AI Developer Tools in San Francisco, California, United States.

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Editorial Verification

Full Audit Transparency Report

  • 200 OK StatusVerified

    Primary website is live, secure (HTTPS), and free of malware.

  • Domain AgeVerified

    Real-world domain age (≥1 yr, verified via the Wayback Machine) OR pre-migration legacy ID OR ≥2 years of platform tenure. Survival across multiple search-engine update cycles is itself a trust signal.

  • Schema ValidationVerified

    Valid Organization / ProfessionalService JSON-LD emitted on every page load — checked at render time.

  • Citation ClarityPending Manual Review

    Verified outbound links to at least two authoritative sources (social profiles, sameAs URLs).

  • Operational HistoryVerified

    Minimum 12-month active history in the claimed industry — derived from the business's founding year, Wayback-verified domain age, or listing tenure (any one signal passes).

  • Entity RegistrationPending Manual Review

    Cross-referenced with official state or country business registries.

  • Physical FootprintData Incomplete

    Verified non-virtual presence via Google Maps or official lease documentation.

    Complete in Dashboard

  • Active LeadershipData Incomplete

    Confirmation of key team members and executive roles.

    Complete in Dashboard

  • NAP ConsistencyData Incomplete

    Verified match of Name, Address, and Phone data across platforms.

    Complete in Dashboard

  • Professional LicensingPending Manual Review

    Verification of required industry-specific certifications or licenses.

  • Sentiment AuditPending Manual Review

    Manual review of third-party reputation signals (BBB, Trustpilot, etc.).

  • Editorial DiscretionPending Manual Review

    Final human review to ensure the business provides genuine value.

This entity has not yet undergone the 12-Point Manual Editorial Audit. The 5 Verified points above are objective system checks this listing already passes; the remaining 7 are manual editorial reviews that still need a human auditor's sign-off.

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About

Vellum AI

Vellum AI is a developer platform for building, evaluating, and deploying LLM-powered applications, founded in 2023 and headquartered in San Francisco, California. Founded by Akash Sharma, Sidd Seethepalli, and Noa Flaherty, Vellum provides a complete development platform including the Prompt Engineering IDE for testing prompts across multiple LLMs, the Workflow Builder for visual AI agent orchestration, dataset management for evaluation, A/B testing with comparative model evaluation, deployment infrastructure with versioning and rollbacks, and observability for production AI applications. Vellum supports integration with all major LLM providers including OpenAI, Anthropic, Google, Mistral, and Cohere, and serves customers including Drata, Notable, and Reibus building production AI applications.

DirJournal's Perspective

Editorial analysis

Vellum AI directly competes with enterprise AI platforms by bundling prompt engineering, workflow orchestration, and production observability into one interface, enabling teams to ship LLM applications without cobbling together multiple vendor tools.

Reviewed by DirJournal Editorial Board

Frequently Asked

About Vellum AI

What does Vellum AI do?
Vellum AI is a developer platform for building, evaluating, and deploying LLM-powered applications, founded in 2023 and headquartered in San Francisco, California. Founded by Akash Sharma, Sidd Seethepalli, and Noa Flaherty, Vellum provides a complete development platform including the Prompt Engineering IDE for testing prompts across multiple LLMs, the Workflow
Where is Vellum AI based?
Vellum AI is based in San Francisco, California, United States.
When was Vellum AI founded?
Vellum AI was founded in 2023 and has been operating for 3 years.
Technical Grounding
JSON-LDSoftwareApplication
Location
San Francisco, California, United States
Founded
2023
Team Size
1-10 employees
Digital Footprint · Technical Entity Graph
  • Website
    vellum.aiHTTPS
  • Schema Type
    SoftwareApplication
  • JSON-LD
    Active
  • NAP Vault ID
    Not assigned
  • Social Profiles
    None linked
  • Platform Tenure
    New listing
View Technical Schema▸
@type
SoftwareApplication
areaServed
Global
openingHours
Mo-Su 00:00-23:59

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