Model Tools & Dev PlatformSeries AInfra signalℹ80Vellum
Vellum helps teams build, evaluate, and ship reliable LLM applications.
Why people are saving it
Relevant to engineering teams navigating the gap between LLM prototype and production-ready deployment.
What they're building
Vellum builds tooling that lets teams construct, evaluate, and ship LLM applications with the reliability standards production environments require.
Foundation model usage
Vellum supports engineering or LLM app work where generation, evaluation, and deployment loops can compound.
NYC footprint
Vellum is part of the New York City AI startup scene, with a profile focused on its market category, stage, and product signal.
Funding
Latest funding: Series A · $20M · July 2025. Total raised: N/A. Lead investor: Leaders Fund.
Platform / OpenAI fit
Strong fit for evals, structured outputs, prompt/version management, model routing, observability, and production LLM app workflows.
Notes
Vellum is tagged infra signal based on buyer clarity, repeat workflow signal, public activity, and fit with the AI Atlas map.