Free AI Agent Builder: Compare Real Costs

Free

Free costs EUR 0. It includes a one-time allowance of 30 AI conversations, one agent, and one team member. The plan also includes the website widget, shared helpdesk inbox, basic analytics, and up to 2 MB of knowledge across 10 sources. The widget carries a momo badge.

An AI conversation can contain up to 10 AI replies on Free. The allowance is one-time, not a monthly refill, so it is better treated as a way to try the support workflow than as a recurring monthly production budget. The plan includes the inbox; there is no per-resolution fee or credit pack.

Starter

Starter costs EUR 29 per month or EUR 319 per year. Yearly billing is 11 times the monthly price. The plan includes 500 AI conversations per month, one agent, and two team members. It adds the website widget and email channel, a Help Center, basic analytics, and up to 20 MB of knowledge across 50 sources. The momo badge is removed.

Each paid-plan AI conversation can contain up to 25 AI replies. There is no separate per-resolution charge. The plan price is flat, with an included conversation allowance.

Growth

Growth costs EUR 129 per month or EUR 1,419 per year. It includes 2,000 AI conversations per month, three agents, and five team members. Channels and tools include the website widget, email, Slack, API, Zapier, and webhooks. It also includes advanced analytics and up to 100 MB of knowledge across 200 sources. The shared inbox remains included.

Scale

Scale costs EUR 399 per month or EUR 4,389 per year. It includes 6,000 AI conversations per month, 10 agents, 10 team members, and up to 500 MB of knowledge across 1,000 sources. The plan includes the website widget, email, Slack, API, Zapier, webhooks, and advanced analytics.

The model is chosen through OpenRouter. For the self-hosted version, bring your own key. The product facts do not specify a comparable model API bill, so treat model usage as a cost to check for your own setup rather than adding an invented amount to a plan price.

How to choose a free AI agent builder for support

If you’re asking how to build your own AI agent for free, first decide whether you need a customer-support desk or a general workflow builder. A support desk puts the customer conversation and human follow-up in one place. A workflow tool counts runs of its workflow instead, so its allowance may not map neatly to the number of customers you serve. Compare the unit being counted before treating two “free” offers as equivalent.

For a small support team, check whether the free allowance is recurring, how many replies fit in one conversation, and whether the inbox is included. momo Free provides a one-time allowance of 30 AI conversations, with up to 10 AI replies per conversation. It also includes one agent, one team member, a shared inbox, and up to 2 MB of knowledge across 10 sources. That can help you test a support workflow, but the one-time allowance is not a monthly operating budget.

If you want a no-code option, also consider what happens when an answer needs a person. momo includes a shared helpdesk inbox on every plan, and a teammate can take over a conversation live. Compare that workflow with the agent-building or automation tools you’re considering, rather than choosing on the word “free” alone.

Finally, map likely costs beyond the plan fee. A model API may be billed separately in an agent workflow; self-hosting can add server costs and operational work. For momo, the self-hosted version uses your own key, and the model is chosen through OpenRouter. Because no comparable model-cost total is established here, check the bill for your own model and workload instead of assuming it is included.

What the price covers—and what it does not

The plan fee is one part of the cost of running an AI support agent. First, estimate how many customer conversations you expect and compare that with the plan’s included AI-conversation allowance. Then check whether the team size, channels, and knowledge capacity fit. The free plan is a one-time allowance, while paid plans have monthly conversation allowances.

A support conversation is not equivalent to a workflow execution. An n8n execution counts a complete workflow run, even if the workflow contains multiple steps. Its cited example estimates that a support bot handling 500 conversations a week, with eight messages each, would generate about 17,000 executions per month. That is an execution estimate, not a price quote, and it cannot be compared one-for-one with a support-plan conversation allowance.

Model API usage can be a separate cost in an agent workflow. Self-hosting can also mean paying for a server and spending time on patching, backups, and scaling. A free self-hosted software edition therefore does not mean that operating it costs nothing. Managed plans and self-hosted setups put different work and bills in different places.

Worked budgets for support teams

For a solo operator, Starter’s plan fee is EUR 29 per month or EUR 319 per year, with one agent, two team members, and 500 AI conversations per month. The paid-plan conversation allowance supports up to 25 AI replies per conversation. If the one-time Free allowance is sufficient for a trial, the plan fee is EUR 0; it does not renew each month.

For a five-person team, Growth is the plan in this set that includes five team members. The plan costs EUR 129 per month or EUR 1,419 per year and includes 2,000 AI conversations per month. That is a plan-fee total, not a complete estimate of any separate model usage or self-hosting costs.

For a ten-person team, Scale includes ten team members and 6,000 AI conversations per month. The plan fee is EUR 399 per month or EUR 4,389 per year. Starter and Growth have fewer included team members, so they do not meet that seat count as specified.

These totals use the stated plan fees only. Add no assumed API, server, or labour figure: those costs depend on the model and whether you host the software yourself. The plan is worth considering when the included conversation allowance and inbox workflow match your support workload, and when the team prefers the stated fee to per-resolution pricing.