Relevance AI vs Stammer AI: Best White-Label Platform to Build an AI Agency (2026)

Relevance AI and Stammer AI both help you run an AI agency, but they solve different halves of the problem. Relevance AI is a workflow-agent builder, focused on composing and chaining agents to run multi-step processes with custom logic. Stammer AI is a white-label reseller platform, built specifically so agencies can stand up branded AI agents for clients and bill them recurring. The choice is essentially build flexibility versus turnkey resale, and the right answer depends on the kind of agency you want to run.

This is a fair comparison for agencies weighing the two, not a takedown of either. We will cover what each does well, how their models differ on white-label and margin, a head-to-head table, and how to decide. Then, since neither tool sells your service for you, we will cover where a demo layer fits so you can actually close the clients you plan to serve. Demand for the underlying service is real and rising, which is why the platform choice is worth getting right.

Relevance AI: The Workflow-Agent Builder

Relevance AI is oriented around building capability. It lets you compose multiple agents and tools into a workflow, so a research step can hand off to an analysis step that hands off to an outreach step. That composability is its strength: when a client process is genuinely multi-step and needs custom logic, Relevance AI gives you the room to build it properly rather than forcing it into a single chatbot.

• Best for: custom, multi-step agent workflows and processes that need coordinated agents.
• Model: a build platform first; you assemble the capability, then decide how to package it for clients.
• Signal: a reported $24 million Series B led by Bessemer in 2025 points to durable investment behind the approach.
• Trade-off: it is a builder, not a turnkey reseller, so the packaging and branding lift falls more on you.

If your agency's value is in bespoke automation, and you are comfortable handling the client-facing packaging yourself, Relevance AI's depth is the draw. It rewards agencies that want to build something more sophisticated than a branded bot.

Stammer AI: The White-Label Reseller Platform

Stammer AI is built for the resale motion from the ground up. Its whole design assumes you are an agency creating branded AI agents for multiple clients and billing them recurring. That focus shows up in reported traction: Stammer reports 1,300-plus agencies on the platform, 35,000-plus live agents, and clients billed at roughly $300 to $500 MRR each. Critically, it reportedly takes 0 percent of your revenue, so the spread above your platform cost is yours.

• Best for: agencies that want to resell branded AI agents fast without heavy custom build work.
• Model: white-label first, with per-client branding and recurring billing baked in.
• Economics: reported $300 to $500 MRR per client and 0 percent revenue share, which protects your margin.
• Trade-off: a reseller platform prioritises turnkey speed over the deepest custom-workflow flexibility.

For an agency whose plan is to sign many clients onto a repeatable branded offer, Stammer's turnkey resale design removes friction that a pure builder leaves on your plate. The 0 percent revenue share is a genuine margin advantage worth weighing heavily. For the broader model, see our white-label AI agent platform guide.

Relevance AI vs Stammer AI: Head-to-Head

The comparison is really build-flexibility versus resale-readiness. Here is how they line up on the factors that matter for an agency.

Treat the figures as reported and confirm current terms with each vendor, since plans and traction claims change. The shape is consistent: Relevance AI for depth and custom logic, Stammer AI for turnkey branded resale and protected margin. For a wider field of options, see the best no-code AI agent platforms for agencies.

Which Should an Agency Pick?

The decision follows the kind of agency you are building, not which tool is objectively best. Use a simple filter.

• Pick Stammer AI if your plan is to sign many clients onto a repeatable, branded AI-agent offer and you want resale, branding, and billing handled for you with 0 percent revenue share.
• Pick Relevance AI if your differentiation is custom, multi-step automation and you want the flexibility to build sophisticated workflows, accepting more packaging work yourself.
• Consider both if some clients want a fast branded bot and others need bespoke workflows; the tools are not mutually exclusive across a client base.

Either way, the platform handles building and, for Stammer, branding, but not the selling. That distinction matters because the constraint on most new agencies is not delivery, it is closing clients. For the fundamentals of the resale motion, read our guide to reselling AI chatbots to clients.

Where Ciela Fits

Neither Relevance AI nor Stammer AI sells your service for you, and that is the point where deals are actually won or lost. You can have a perfectly branded, white-labelled agent ready to deploy and still stall if your outreach only describes it. Ciela closes that gap, and it is not a competitor to either platform. Ciela does not build or host the agent that answers your client's phone; that is the product you resell on Stammer or build on Relevance AI. Ciela is the layer you use to sell it.

Ciela is the AI agency operator's outbound-with-live-demos platform. It builds and filters your lead list, researches each prospect, audits their website, and sends a personalized interactive demo as your outbound. The demo is the pitch. Rather than describe the agent you resell, Ciela provisions a live demo agent for each prospect, preloaded with their company name, owner, and services, wrapped in their logo, color, and font so it looks already deployed. You drop a single demo-link token into an email or LinkedIn message, and the demo provisions per contact when the message sends; the prospect explores a working agent built on their own business, then comes back to book. Interactive demos convert about 32 percent higher than static formats, which is why a live demo beats a text pitch. Ciela Engine is $399 per year with live per-prospect demos included. Build or resell on the platform you pick, then demo it live per prospect with Ciela in your outbound.

Frequently Asked Questions

What is the difference between Relevance AI and Stammer AI?

Relevance AI is a workflow-agent builder focused on composing and chaining agents to run multi-step processes. Stammer AI is a white-label reseller platform built specifically for agencies to spin up branded AI agents for clients and bill them on a recurring basis. One is oriented around building capability, the other around packaging and reselling it under your brand.

Which is better for a white-label AI agency?

For a pure white-label resale motion, Stammer AI is purpose-built: it reports supporting 1,300-plus agencies at $300 to $500 MRR per client, 35,000-plus live agents, and takes 0 percent of your revenue. Relevance AI is stronger when you need deeper, custom multi-agent workflows. The best pick depends on whether you prioritise turnkey reselling or build flexibility.

How much can an agency make reselling on Stammer AI?

Stammer reports agencies billing clients around $300 to $500 in monthly recurring revenue per client, and because the platform reportedly takes 0 percent of your revenue, most of the spread above your platform cost is margin. Actual profit depends on your platform tier, delivery time, and how many clients you support, so model it against your own numbers.

Is Relevance AI worth it for agencies?

Relevance AI is worth considering when clients need genuinely multi-step, coordinated agent workflows rather than a single branded chatbot. It raised a reported $24 million Series B led by Bessemer in 2025, which signals durability. If your delivery leans toward complex processes and custom logic, it can be the stronger build platform, though it is less of a turnkey reseller than Stammer.

Do I still need to sell if I use a white-label platform?

Yes. A white-label platform solves building and branding, not selling. You still have to find prospects, pitch, and close, which is the hard part of running an agency. The platform lowers delivery friction, but revenue still comes from consistent outbound and a compelling offer, ideally proven with a live demo on the prospect's own business.

How do I demo an agent I resell on Stammer or build on Relevance AI?

Show it working on the prospect's own business rather than describing it. Build or configure the agent on your chosen platform, then send a personalized, live demo in your outreach so the prospect experiences it before any call. Interactive demos convert about 32 percent higher than static formats, so leading with a working demo tends to close more deals than a text pitch.

Reselling on Stammer or building on Relevance AI? See Ciela AI and demo the agent live on each prospect's own business in your outbound.