VELLUM WORKFLOWS

The IDE for building steerable agents

Purpose-built tooling to experiment with different prompts, models, RAG strategies, and AI architectures all through a single interface. Quickly spot issues, debug, and iterate.

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Rapidly define and debug any AI system

Develop any AI architecture from simple prompt pipelines to complex agentic workflows using Vellum's production-grade graph builder.

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All the building
blocks you need

Vellum offers essential low-level abstractions for even the most sophisticated AI backends. Build provider-agnostic graphs with nodes that call models, run Python/Typescript code, perform map/reduce on LLM output, and more.

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How it works

A Powerful Orchestration Layer

The more agentic your system is, the more difficult it is to control and debug. Vellum helps you model your AI systems as intuitive graphs to improve visibility into their order of operations, bottlenecks, and failure modes.

Control Flow — Not Data Flow

Vellum’s unique graph execution layer relies on Control Flow rather than Data Flow. Edges between Nodes define the order of operations, and Nodes can reference the output of any upstream Node, as well as any global inputs to the Workflow itself.

First Class Error Handling

Great AI systems should prioritize being fault-tolerant. Vellum provides a framework for gracefully handling third-party errors by making it easy to retry LLM calls, fall back to other providers and when needed, fail early.

Native Looping, Parallelism, and Streaming

Real-world agentic systems require more than just DAGs. Vellum helps you define and debug loops, recursion, and parallel branch execution. With first-class support for streaming, you can emit intermediate results in addition to your final user-facing outputs.

Build composable systems and define team-wide standards

Workflows in Vellum are composable — once defined, they can be re-used as nodes in other parent workflows. This allows for defining shared tools and enforcing team-wide standards. Start from Vellum’s library of pre-built tools and create your own as you go.

Easily deploy and iterate with confidence

Use Vellum Evaluations to perform assertions on intermediate results as well as final outputs. Once happy, deploy with one click to invoke your Workflow via API. Debug problematic requests with
advanced trace views.

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👋 Your partners in AI Excellence

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Vellum made it so much easier to quickly validate AI ideas and focus on the ones that matter most. The product team can build POCs with little to no assistance within a week!

Pratik Bhat

Senior Product Manager, AI Product

We accelerated our 9-month timeline by 2x and achieved bulletproof accuracy with our virtual assistant. Vellum has been instrumental in making our data actionable and reliable.