Vellum AI

Vellum AI

Verified

AI development platform for building, testing, and deploying LLM workflows.

FreemiumFree plan available
LLM application development platformPrompt management and versioningA/B testing for promptsEvaluation workflows+2 more
Pricing
Freemium
Free plan available
Features
6 listed
Key capabilities
Use Cases
4 listed
Identified use cases
Access
Web App
Browser-based
Listed on Nextool since Feb 2026Verified by Nextool

About Vellum AI

"The LLM platform for serious AI teams"

Vellum AI is an enterprise LLM development platform that streamlines the entire lifecycle of building production AI applications — from prompt engineering and evaluation to deployment, monitoring, and iteration. It provides a visual prompt playground, version control for prompts and models, automated regression testing, production traffic routing, and detailed analytics on LLM performance and costs. AI product teams at companies building customer-facing LLM features use Vellum to ship AI applications faster, maintain quality as they scale, and make data-driven decisions about which models and prompts perform best.

Key Features

6
LLM application development platform
Prompt management and versioning
A/B testing for prompts
Evaluation workflows
Workflow orchestration
Team collaboration

Best For

4 use cases
Managing LLM prompts in production
Testing and improving AI responses
LLM application deployment
AI team collaboration
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Official Links

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Tool Details

Pricing
Freemium
Platform
Web
Best For
Managing LLM prompts in production
Features
6 listed
Categories
2
Website
vellum.ai
Listed
Feb 2026
Verified Tool
Reviewed by our editorial team
Visit Vellum AI

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