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How Much Does an AI Agent Cost?

How much does an AI agent cost? Ready-made agent software ranges from low monthly subscriptions to usage-based fees; custom builds and managed services can cost much more. If you are choosing a support desk, compare the billing unit, included conversations, and the work your team still has to handle.

EUR 29–399/monthFixed plan fee
$0.99/outcomeOutcome pricing
$5,000+Custom project

Compare support-agent pricing models

The same word, “agent,” can mean a subscription product, a metered service, or a custom project. Compare what each fee buys before estimating your budget.

momoFin, Tidio, and momo
Fin outcome pricingFlat plans in EUR with an included AI-conversation allowance; no per-resolution fee.$0.99 per outcome; a separate comparison reports a minimum of 50 resolutions per month.
Tidio plan and usageFree EUR 0; paid plans range from EUR 29 to EUR 399 per month, with usage included up to each plan limit.A pricing page lists $300 per month plus monthly usage; Lyro conversations have a separate usage charge.
Free optionFree includes 30 one-time AI conversations, one agent, one team member, and the helpdesk inbox.Tidio’s free-plan information lists 50 handled conversations and 50 one-time Lyro AI interactions.
Conversation limitsPaid plans include 500, 2,000, or 6,000 AI conversations per month. Free includes 30 one-time conversations.Fin charges for outcomes; Tidio lists plan and usage limits, including Lyro conversation allowances.
Custom-built agentsA hosted support desk is available on fixed plans; source-available code can also be self-hosted under its licence.Supplied build-cost estimates range from $5,000 for a basic agent to $75,000+ for a multi-agent system.
Human handoffThe helpdesk inbox is included on every plan, and the team can take over conversations.Fin outcome pricing applies to successful end-to-end resolutions; escalated conversations are not charged as outcomes.

Vendor pricing and billing units can change. Fin’s minimum-resolution detail comes from a separate comparison, while its outcome fee is listed in the supplied Fin pricing evidence.

Plan details

Fin

The supplied Fin pricing information lists a fee of $0.99 per outcome. An outcome is a customer conversation resolved end to end without human intervention; a conversation escalated to a human is not charged as a successful outcome. Another supplied comparison reports a minimum of 50 resolutions per month. Treat that minimum as a detail to verify with Fin before budgeting, because there is no first-party evidence here confirming the current minimum, contract terms, or annual options.

Outcome pricing makes the bill depend on successful resolutions rather than every conversation the AI handles. That can make a simple price-per-outcome calculation possible, but it is not the full support budget: work handled by people, setup, and any other contracted charges should be considered separately. Do not assume every conversation will resolve or use a resolution rate that has not been measured for your own support content and traffic.

Tidio

The supplied Tidio pricing page lists a plan starting at $300 per month plus monthly usage. Its listed Lyro AI conversation allowance starts at 3,000, and Lyro conversations have a separate usage charge. Tidio describes AI and human conversations as separately billed as usage grows. Another supplied comparison lists a free plan with 50 handled conversations and 50 one-time Lyro AI interactions. Those are different offer details; do not combine them into a single estimate without checking which plan and conditions apply.

A “conversation” may have a vendor-specific definition. Tidio’s pricing information says multiple AI replies in one customer interaction count as one Lyro conversation. Human-handled conversations have a separate billable definition. Check whether your support channel mix and expected usage fit the allowance, what happens when it is exceeded, and whether the plan’s base fee includes the functions you need.

Free

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

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 includes the website widget, email channel, helpdesk inbox, Help Center, basic analytics, and up to 20 MB of knowledge in 50 sources. The widget has no momo badge. Paid-plan AI conversations can hold up to 25 AI replies. The inbox is included, so the core plan does not add a separate helpdesk fee.

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. Slack, API, Zapier, and webhooks are available on this plan, alongside advanced analytics and up to 100 MB of knowledge across 200 sources. Those channel and automation options matter when estimating whether a support workflow can stay inside the plan.

Scale

Scale costs EUR 399 per month or EUR 4,389 per year. It includes 6,000 AI conversations per month, 10 agents, and 10 team members. API, Zapier, and webhooks are available, as are advanced analytics and up to 500 MB of knowledge in 1,000 sources. Across paid plans, the listed fee is a flat plan price with included AI conversations: there is no per-resolution fee and no credit pack.

EUR 129/month

Budget for the plan, not just the AI reply

Growth includes 2,000 AI conversations per month, three agents, five team members, and the helpdesk inbox. If the AI is unsure, it tells the visitor and opens a ticket for your team rather than claiming certainty.

A predictable plan fee and a place for people to take over.

Estimate total cost

Why does AI cost so much? The subscription is only one cost bucket

A support agent can be priced by seat, by deployed agent, by task or token, by output, by outcome, or through a fixed subscription. To learn how to price AI agents, first identify which billing unit matches your workload. Hybrid offers combine a base fee with a variable charge. A per-seat bill is tied to who has access; a per-agent bill may be tied to the number of digital workers. A task or token charge follows activity, while outcome billing follows a result such as a resolved customer conversation. These units are not interchangeable. Ask what counts as a billable unit and whether a human handoff still triggers a fee.

For a custom project, supplied estimates put a basic build at $5,000–$15,000, a mid-level build at $20,000–$50,000, and enterprise systems from $70,000 to more than $150,000. For a broader breakdown, see how much it costs to build an AI chatbot. Another estimate gives $5,000 for a single-workflow build and $75,000+ for a multi-agent system. These are broad estimates for different scopes, not quotes for a support desk. Custom connections, workflow design, data cleanup, and changes to scope can affect the project. A build also leaves ongoing work: updates, repairs, and maintenance do not disappear when the initial project ends.

For ready-made software, the useful comparison is the recurring fee plus the usage rules. For a build, separate the one-time project cost from operation and upkeep. For an outcome-priced service, calculate the fee using outcomes actually billed, not total inbound conversations. For a metered service, identify the usage unit and what drives it, such as model inference, orchestration steps, API calls, and volume. A model-spend estimate cannot be made from conversation count alone without knowing the model and actual usage.

Worked support-team budget

These examples compare plan fees, not staffing costs or expected savings. A solo support operator could use Starter: EUR 29 monthly, or EUR 319 for a year on annual billing. That plan includes two team members and 500 monthly AI conversations, so a solo user is within its listed team limit. Free is EUR 0, but its 30 AI conversations are one-time rather than a recurring monthly allowance.

A five-person support team fits Growth’s five team members and three agents. The plan costs EUR 129 monthly, or EUR 1,419 annually. A ten-person team fits Scale’s 10 team members and 10 agents at EUR 399 monthly, or EUR 4,389 annually. These are plan totals, not per-person prices. The included monthly AI-conversation limits are 2,000 on Growth and 6,000 on Scale. If actual support demand exceeds a limit, these figures alone do not establish an overage rate or a suitable upgrade path; check the plan conditions before relying on extra volume.

Check costs beyond the headline price

For a hosted subscription, consider whether your sources need cleanup and whether your team needs time to review answers and teach approved knowledge. For custom or metered systems, also ask about setup, integrations, model usage, monitoring, maintenance, and support. Integration work may involve mapping workflows and preparing data; ongoing model or workflow changes can require maintenance. Scope creep can raise a custom project’s cost when new connections or jobs are added after work begins.

When the workload is steady, a flat subscription with a defined allowance may be easier to forecast. If demand varies, understand how a metered or hybrid bill responds to spikes, and decide what limit or alert your team needs. The right choice depends on the cost unit matching your actual workload. Compare the full recurring fee and the remaining human work, not only a headline price or an unverified claim about conversations resolved.

Choose a plan by monthly support volume

Each plan has a flat EUR fee, a defined AI-conversation allowance, and the helpdesk inbox for human follow-up.

Included: Helpdesk inbox for the conversations that need a person. · AI answers drawn from your business knowledge, with citations when confident. · A ticket opened when the AI is not sure.

Free

Try momo with real visitors.

€0 forever

  • 30 AI conversations, one-time
  • 1 agent, 1 team member
  • Website widget
  • Helpdesk inbox
  • Basic analytics
  • 2 MB of knowledge, 10 sources

Starter

One agent, steady traffic.

€29per month

  • 500 AI conversations / month
  • 1 agent, 2 team members
  • Website widget and email
  • Helpdesk inbox and Help Center
  • Basic analytics
  • No momo badge
  • 20 MB of knowledge, 50 sources

Growth

More agents, more channels.

€129per month

  • 2,000 AI conversations / month
  • 3 agents, 5 team members
  • Slack, Shopify, WhatsApp, Instagram, Messenger
  • API, Zapier and webhooks
  • Advanced analytics
  • 100 MB of knowledge, 200 sources

Scale

High volume, every channel.

€399per month

  • 6,000 AI conversations / month
  • 10 agents, 10 team members
  • Every channel
  • API, Zapier and webhooks
  • Advanced analytics
  • 500 MB of knowledge, 1,000 sources

Need more resources or custom solutions? Contact us for Enterprise plans

AI agent cost questions

Start your estimate with the charge unit, included usage, and the work that stays with your team.

Does AI support software charge per seat, per conversation, or per resolution?

It depends on the product. Plans may charge per human seat, per AI conversation, per task or token, or per successful outcome; some combine a subscription with usage fees. momo uses a flat EUR plan fee with an included number of AI conversations and does not charge per resolution.

How do I calculate an AI support agent’s cost at my monthly conversation volume?

First define what the vendor counts as a conversation, task, or outcome. Then compare your expected volume with the included allowance and add any published usage fee that applies. For a flat plan, use the plan fee and included conversation limit; for outcome or metered billing, use the vendor’s billable unit and your measured usage rather than assuming every conversation resolves.

How much can a custom AI agent build cost before ongoing maintenance?

Supplied estimates vary by scope: a basic build is estimated at $5,000–$15,000, while enterprise-grade systems are estimated from $70,000 to more than $150,000. Those are broad project estimates, not quotes for a specific support workflow. Budget separately for integrations, data preparation, and maintenance after launch.

How does Fin’s per-resolution pricing compare with a fixed monthly plan?

The supplied Fin pricing information lists $0.99 for each successful outcome, with no outcome fee when the conversation escalates to a human. momo instead charges a flat monthly EUR plan fee with an included AI-conversation limit and no per-resolution charge. The models expose you to different cost drivers: outcomes on one side and plan capacity on the other.

Start with the support volume you have

Try the free plan, put your own support content in the knowledge base, and see which conversations need a human.