Vellum AI
vellum.ai
Platform for building, testing, and deploying LLM applications.
Quick Information
- Category:
- Coding
- Pricing:
- Freemium
- Platforms:
- Web
- Free Plan:
- Yes
- API Available:
- Yes
- Last Verified:
- September 2026
What Is Vellum AI?
Vellum AI is a development platform for building AI products powered by large language models, sitting in the LLMOps and agent orchestration category with a visual editor where each node can represent an LLM call, a code execution step, a conditional branch, an API integration, or a document retrieval action. In January 2026, Vellum rolled out a refreshed positioning called "Vellum for Agents," shifting the pitch toward "just chat and let Vellum build reliable agents for you" — a move toward more conversational agent building rather than pure prompt-engineering tooling. Pricing includes a free plan (50 builder credits/month, one user seat, hosted agent apps, debugging console, knowledge base supporting up to 20 documents), Pro at $89/seat/month, and custom Enterprise.
Its evolution from a pure prompt-engineering and evaluation tool into a more conversational "just chat and let Vellum build agents for you" platform reflects a genuine repositioning toward accessibility, lowering the barrier for teams that want reliable AI agents without needing deep LLMOps expertise, while the underlying visual workflow editor (LLM calls, code execution, conditionals, API integrations, retrieval) still serves teams wanting fine-grained control.
It's aimed at product teams and developers building and monitoring AI workflows and agents, with the free plan's real 50 monthly builder credits and 20-document knowledge base providing genuine hands-on testing before Pro's $89/seat/month unlocks higher usage limits — anyone evaluating LLMOps platforms should note Vellum's January 2026 shift toward more conversational agent-building positioning if comparing it against more code-first competitors. See our Development & Code tools directory for related tools like LangChain and LangSmith.
What Can You Use Vellum AI For?
AI workflow and agent building
Builds AI workflows and agents using a visual editor with LLM calls, code steps, and API integrations.
Prompt engineering and evaluation
Designs, tests, deploys, and monitors AI prompts and workflows.
Conversational agent creation
Uses the "Vellum for Agents" chat-based approach to build reliable agents from natural language.
Vellum AI Features
- Visual workflow editor — Builds workflows where nodes represent LLM calls, code execution, conditionals, API calls, or retrieval.
- Vellum for Agents — A January 2026 conversational positioning letting users chat to build reliable agents.
- Debugging console and knowledge base — Provides debugging tools and a knowledge base supporting up to 20 documents on the free plan.
Who Is Vellum AI For?
- Product teams building AI features — Uses the visual workflow editor to design, test, and deploy AI-powered products.
- Developers wanting less code-first agent building — Uses the conversational Vellum for Agents approach to build agents via chat.
Vellum AI Pros & Limitations
What We Like
- Genuine repositioning toward conversational agent building lowers the barrier for less LLMOps-experienced teams
- Free plan provides real hands-on testing with 50 monthly credits and a 20-document knowledge base
- Visual workflow editor still supports fine-grained control (LLM calls, code, conditionals, retrieval) for advanced users
Limitations
- Pro tier at $89/seat/month can add up quickly for larger teams
- January 2026 repositioning toward conversational agent building may not suit teams wanting a purely code-first LLMOps tool
- Enterprise pricing requires custom sales engagement with no public figures
Vellum AI Pricing
| Plan | Price | Main Features |
|---|---|---|
| Free | $0 | 50 builder credits/month, 1 seat, hosted agent apps, 20-document knowledge base |
| Pro | $89/seat/month | Expanded usage limits and features |
| Enterprise | Custom | Full enterprise feature set |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #658
- Overall Score:
- 20.3/100
- Monthly Users:
- –
- Rank Change:
- ▲ 4
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Vellum AI or its company. How Our Rankings Work
Frequently Asked Questions
Is Vellum AI still an LLMOps platform?
Yes, though January 2026 added a more conversational "Vellum for Agents" positioning alongside its existing workflow tools.
How much does Vellum cost?
Free (50 credits/month) or $89/seat/month (Pro), plus custom Enterprise.
Does Vellum have a free plan?
Yes, with 50 builder credits/month and a 20-document knowledge base.
What can Vellum workflows include?
LLM calls, code execution steps, conditional branches, API integrations, and document retrieval.
Our Take
Vellum AI's January 2026 shift toward "Vellum for Agents" conversational positioning reflects a genuine move toward accessibility, letting teams build reliable agents through chat rather than requiring deep LLMOps expertise.
The free plan's real 50 monthly builder credits and 20-document knowledge base provide genuine hands-on testing before committing to the $89/seat/month Pro tier.
Vellum AI Alternatives
Vellum AI Comparisons
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