Best no-code AI agent builders for agencies

No-code AI agent builders for agencies need three things most single-business buyers do not: a way to run many clients from one account, pricing you can mark up, and either white-labeling or self-hosting so the client never sees the plumbing. Based on published pricing and features, n8n is the best overall pick for agencies, Voiceflow is the best for conversational client work, and Botpress, MindStudio, Make, Vapi and Retell AI each win a specific niche.

How we chose

These rankings are based on published pricing, documented features and agency fit — specifically multi-client management, white-labeling, self-hosting and how cleanly each pricing model resells. Our hands-on testing notes are still pending, so treat this as a research-based shortlist, not lab results. Every price below links to the vendor’s own page, and you should re-check before quoting a client, because several vendors bill on usage.

Which are the best no-code AI agent builders for agencies?

1. n8n — best overall for agencies that want control

Best for: technical agencies that want to self-host client agents and audit every run. Starting price: €20/month (Starter, billed annually) per n8n’s pricing page; a free self-hosted Community Edition is available on GitHub. Honest limitation: it is a visual canvas, not a chat-only assistant, so non-technical clients will need you to build and maintain everything.

n8n’s agency case rests on three published facts. First, all plans include unlimited users, unlimited workflows and every integration — you pay per workflow execution, where one full run counts once regardless of steps, which makes multi-step client agents cheaper to predict than per-step tools. Second, the AI Agent node, human approval for tool calls and the ability to replay any run are included from Starter up, so you can show a client exactly where an agent broke. Third, you can self-host: the Community Edition is free, and the Business plan (€667/month billed annually) adds SSO/LDAP, multiple environments and Git version control for client-separated setups. Hosted data is stored in the EU, in Frankfurt, which helps with European clients. n8n says agents can use 600+ native integrations plus your own workflows as tools, and lists 7,500+ community templates — useful when you are scaffolding a new client build fast.

2. Voiceflow — best for agencies selling conversational agents

Best for: agencies building voice and chat agents for multiple clients. Starting price: usage-based, with a free trial (no credit card) for agencies, per Voiceflow’s pricing page. Honest limitation: there is no published flat price for business plans — you book a demo — so margin planning takes a sales call.

Voiceflow is the most explicitly agency-shaped product here. Its Agencies & Partners plan lists multi-client workspace management, white-labeling and client handoff tools, with transparent usage-based billing. The platform itself is built for governance: you choose among major LLM providers or bring your own model, set global instructions and guardrails, and move agents through development, staging and production environments — exactly how an agency should separate client work. Its security section lists SOC 2, ISO 27001, GDPR and HIPAA, which shortens procurement conversations with larger clients.

3. Botpress — best for agencies reselling customer support agents

Best for: agencies whose clients want support bots that take real actions (refunds, account updates). Starting price: $150/month (Plus) per Botpress’s pricing page; a free plan exists. Honest limitation: conversation quotas are tight — Plus includes 250 conversations/month, and extra packs cost $65 per 100.

Botpress prices per conversation rather than per seat, with the headline “Priced for the work it does, not the seats it fills” — a model that resells cleanly because you can map one client to one conversation pool. Plus includes 250 conversations, $25 of AI usage, 3 seats, WhatsApp and white-label webchat; Team ($750/month) raises that to 1,500 conversations, $150 of AI usage, unlimited seats and RBAC. Two billing details matter for client contracts: a conversation counts when an end user sends at least two messages in a billing month (three minutes for voice), a conversation spanning two calendar months counts in both, and paid plans auto-recharge on overage so client agents never stop mid-month. If Botpress is on your shortlist, our Botpress vs Voiceflow comparison breaks down the conversational-agent choice.

4. MindStudio — best for fast client prototyping

Best for: consultants and agencies prototyping client agents before committing to a stack. Starting price: free plan (1 agent, 1,000 runs/month), then $20/month plus usage, per MindStudio’s pricing page. Honest limitation: it is not built for workflows needing thousands of app integrations out of the box.

MindStudio’s pitch is speed: its Service Router connects to 200+ AI models with no API keys required (you can bring your own), so you can demo the same agent on different models in a client meeting. The Individual plan at $20/month plus usage includes unlimited agents and runs, and yearly billing saves 20%. MindStudio states your data is never used for training, and it lists a self-host option — rare at this price. Business plans are custom-priced for teams.

5. Make — best for agencies already living in visual automation

Best for: agencies whose client work is mostly workflow automation with a few judgment steps. Starting price: free plan with 1,000 credits/month; paid Core, Pro and Teams tiers are credit-based, per Make’s pricing page. Honest limitation: no self-hosting, and credit billing on AI features is harder to quote per client than per-conversation or per-minute models.

Make AI Agents live inside the same visual canvas as ordinary Make scenarios, and its Reasoning panel shows every decision the agent makes step by step — a genuinely useful artifact to screenshot into a client report. Make says its agents connect to 3,500+ pre-built apps, its FAQ says no coding experience is needed, and you can insert manual approvals or stop points. Credits became the billing unit on August 27; most actions use 1 credit and some AI features use more, and router and error-handler modules consume none. See our n8n vs Make comparison if you are deciding between the two canvases.

6. Vapi — best for agencies reselling voice agents with full control

Best for: technical agencies building custom phone agents for clients. Starting price: $0.05/minute Vapi hosting plus provider costs, with $5 free credits, per Vapi’s pricing page. Honest limitation: it is developer-oriented low-code — non-technical clients cannot self-serve.

Vapi bills per minute with no minimums and unlimited agents on every plan, and in Vapi’s words you own and operate your agents, models and data. Model, voice and telephony provider costs are extra, so your per-minute client price is a stack you assemble — which is exactly why agencies can add margin. Enterprise success packages add uptime SLAs of 99% or 99.9%.

7. Retell AI — best for agencies selling AI receptionists

Best for: agencies productizing inbound call handling (booking, intake, support) for SMB clients. Starting price: $0.07–$0.31/minute pay as you go, with $10 free credits, per Retell AI’s pricing page. Honest limitation: voice-only focus — for chat support, Botpress or Voiceflow fit better.

Retell is the more approachable of the two voice options: a drag-and-drop canvas with functions, call transfers, DTMF, SMS and custom logic, live call monitoring and human takeover. Voice infrastructure is listed at $0.055/minute plus your chosen voice and LLM, you start with 20 free concurrent calls, and there is no annual contract. Per-minute billing makes per-client packages (for example, “500 minutes/month”) easy to construct. Our Vapi vs Retell AI comparison covers the trade-off in detail.

How do agency pricing models compare?

The table below uses each vendor’s published entry point. Usage-based rows mean your client quote depends on volume.

Which pricing model is easiest for an agency to resell?

Per-minute and per-conversation pricing resell most cleanly, because you can package them into client plans (“1,000 minutes” or “500 conversations”) with a known cost floor. Per-execution pricing (n8n) is predictable for you but harder to explain to a client; credit-based pricing (Make) is the hardest to quote because AI features consume variable credits. Plan-plus-usage (MindStudio) sits in between — fine for prototyping, but model usage varies per client.

An illustrative scenario: a 5-person agency wants to resell a support bot to three retail clients. With Botpress, three Plus plans cost $450/month for 750 conversations with AI usage included, and each client gets white-label webchat. With n8n, one Pro plan at €50/month covers 3 shared projects — one per client — with unlimited users, and the agency absorbs execution volume. Both work; the first is easier to invoice, the second is cheaper at scale.

A second illustrative scenario: a 3-person agency selling AI receptionists. Retell AI’s $10 free credits and 20 free concurrent calls let you demo before spending anything, then bill clients per minute with a markup on the $0.07–$0.31 range.

How should an agency choose in practice?

1. Define what you sell: conversational agents (Voiceflow, Botpress), workflow agents (n8n, Make, MindStudio) or voice agents (Vapi, Retell AI).
2. Check the client-separation story: workspaces and white-labeling (Voiceflow), projects and environments (n8n), or separate plans per client (Botpress).
3. Model one real client’s monthly volume against each vendor’s billing unit before committing.
4. Confirm compliance needs early — Voiceflow lists SOC 2, ISO 27001, GDPR and HIPAA; n8n’s hosted data sits in Frankfurt.
5. Prototype free first: every tool here has a free plan, trial or credits.

For broader shortlists, see our guide to the best no-code AI agent builders, the best self-hosted AI agent builders and the customer support agents category. If you would rather outsource the build, our hire page explains how to find an agency.

Bottom line

n8n is the best no-code AI agent builder for most agencies: unlimited users on every plan, execution-based pricing from €20/month, and a free self-hosted edition for full client control. If your agency sells conversational or voice agents specifically, Voiceflow (white-label, multi-client) and Retell AI or Vapi (per-minute voice) are the sharper fits.

What to ask next:

• How do n8n and Make compare for agency work?
• Botpress vs Voiceflow: which is better for client chatbots?
• Which self-hosted AI agent builders can agencies run for clients?