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Vellum
AI Agents
Overview
An AI development platform for building, testing, and managing LLM-powered applications. It provides tools for prompt engineering, semantic search, and model evaluation.
Vellum is a development workspace for building, testing, and managing LLM-powered features, covering prompt engineering, semantic search, evaluation, and deployment. It gives teams a structured way to iterate and ship reliable AI rather than juggling scripts. It is widely used by product teams operationalizing LLMs.
Key Features
- Prompt engineering and experimentation
- Semantic search and retrieval tooling
- Model and prompt evaluation
- Deployment and version management
- Team collaboration
Best For
Product teams building and managing reliable LLM features in one workspace.
Pros & Cons
Pros
- Robust testing and evaluation
- Covers the full LLM feature lifecycle
- Collaborative
Cons
- Paid platform with onboarding
- More than solo experiments need
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Pulse Verdict
“The professional's workspace for LLM development. Vellum's robust testing and evaluation features make it an essential tool for shipping reliable AI features.”
Pricing
Paid plans by usage and seats; trial available.
Pricing changes often — confirm current plans on the official site.