Vellum

Platform for building and evaluating AI workflows

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About Vellum

At its core, Vellum is a platform where teams design AI workflows visually, run evaluations and deploy with observability. In everyday use, it supports multi-model orchestration, retrieval and A/B testing aimed at product teams shipping AI features. For teams moving agents from prototype to production, that focus on reliability and visibility matters more than adding another layer of fragile automation.

Vellum key facts

Category: AI Agents
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: workflows, evals, orchestration
Official site: vellum.ai

About the AI Agents category

Autonomous AI agents that plan and execute tasks for you — general agents, AI browsers, AI employees, app builders, and coding agents. The AI Agents category on Tools Hub currently lists 156 tools. Alongside Vellum, it includes Agenta, Weights & Biases, Opik by Comet, Maxim AI.

FreemiumAI Agentsworkflowsevalsorchestration

More in AI Agents

Comparing tools in the AI Agents category? These related listings are worth a look: Agenta — Open-source LLMOps platform for prompt experiments; Weights & Biases — AI developer platform for training and tracking models; Opik by Comet — Open-source LLM evaluation and tracing platform.