What AI-powered phone bots and voice assistants cost – project ranges and influencing factors.
In brief
The investment range for an AI phone bot is EUR 2,240 – 89,376 excl. VAT. That is the project scope, not the monthly rate and not the saving per call.
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The calculation follows six visible stages. All figures remain planning values until scope and assumptions have been reviewed.
1. Capture inputs
The calculator records the visible project, volume, complexity and operating parameters selected on this page.
2. Add fixed components
Fixed base modules and selected add-ons are added without mixing them with recurring charges.
3. Apply multipliers
Quantity, complexity and scope factors multiply only the cost components identified for them in the calculator model.
4. Create the range
The calculator applies its documented lower and upper uncertainty factors to the base result; ROI views keep investment and savings visible separately.
5. Round and calibrate
Monetary result fields are rounded to the nearest whole euro. Public project-cost components are calibrated with the centrally maintained display factor.
6. Classify the result
The result is shown as non-binding guidance. A binding quote requires scope, data, integrations, risks and acceptance criteria to be reviewed.
Efficiency or discount factor: A central display factor of 0.7 is applied to public project-cost components to keep all calculators aligned with the currently reviewed pricing basis. It is not a customer-specific discount; customer-entered wages, revenues and existing operating costs are not reduced.
Why this is not a binding quote: The calculator cannot verify complete requirements, third-party dependencies, data quality, legal constraints or acceptance criteria.
Concrete project profiles with assumptions and indicative budgets—useful for internal alignment alongside the calculator.
Software leasing spreads this investment range over 72 months. Terms are on the software financing page.
Voice AI and conversational IVR projects use one investment range. Dialog complexity, CRM or booking integration, languages and telephony change the scope inside that range. We outline options in a workshop and then provide a transparent quote.
The main cost drivers are the number of intents and dialogue paths, integration with your existing systems (CRM, booking, ERP), language variants and telephony setup. A bot that only answers FAQs and hands off to humans is cheaper than one that books appointments, checks order status or handles multi-turn conversations. We recommend starting with a defined set of use cases and expanding after go-live – that keeps the initial budget predictable and lets you measure ROI before scaling.
Implementation typically includes design of the dialogue flow, training of the voice AI model, integration with your phone system and CRM, testing and go-live support. Ongoing costs depend on whether you need hosting, monitoring and continuous tuning; we offer both project-based and retainer models. All figures above are excluding VAT and assume standard requirements; custom integrations or very large intent sets can increase scope. We are happy to provide a fixed quote after a short discovery call.
Use the calculator below to estimate savings from call deflection and staff time. For a tailored quote for your AI phone bot or voice AI project, get in touch – we will outline options and typical cost ranges without obligation.
Request a quoteFAQ
FAQ bots, booking bots and enterprise bots with CRM sit in the investment range EUR 2,240 – 89,376 excl.
VAT. Scope changes the variant, not a second price.
Main factors: number of intents and dialogue paths, integration with CRM or booking systems, language variants, and telephony setup.
We recommend starting with a defined set of use cases and expanding after go-live to keep the initial budget predictable.
Typically: dialogue flow design, voice AI training, integration with your phone system and CRM, testing and go-live support.
Ongoing costs depend on hosting, monitoring and tuning; we offer both project-based and retainer models.
Yes.
Use our calculator to estimate savings from call deflection and staff time. We can also define KPIs (e.g. deflection rate, handling time) and track them after go-live.
Use case, voice, telephony integration, and ongoing minutes—so telco bills don't surprise you.
1. Use case, voice, dialog design
We define what the bot handles (appointment, qualification, FAQ) and how it sounds. Voice license flows into the calculation.
2. Telephony and CRM integration
We calculate Twilio/SIP trunks, CRM/calendar connections, and escalation paths.
3. Build and test
Bot build, tests with real callers, adjustments before launch—we estimate realistically per phase.
4. Ongoing minutes and improvement
We calculate telco cost, inference cost, and monthly improvement reviews. So you see TCO per call.
| Model | When it fits | Budget & flexibility | Typical risks |
|---|---|---|---|
| Fixed price (fixed scope) | Clearly defined scope, stable requirements, repeatable delivery. | Predictable total cost; little room for change without a change order. | Scope creep leads to change orders or quality trade-offs. |
| Time & Material | Discovery, legacy, evolving requirements, or close collaboration. | Maximum flexibility; budget transparent via hourly or daily rates. | Without prioritisation, effort can grow—backlog and reviews matter. |
| Retainer / maintenance package | Ongoing operations, updates, small features, and support. | Agreed capacity per month; predictable follow-on cost. | Large changes may still need a separate estimate. |
| Hybrid (milestone + T&M) | MVP or phased releases with clear go-lives, then iterate. | Core delivery fixed price; extensions on a time-and-materials basis. | Define contractually what is in scope vs. extra work. |
Calculators on this page provide indicative ranges; we choose the right model with you based on risk, scope, and planning horizon.
The ranges shown are indicative. For a binding quote we discuss scope, priorities and funding options in a free intro call. Many digitalization projects qualify for grants – try our funding calculator.
Browse all cost calculators, explore services and typical solutions. Questions about AI phone bots? Contact us.
After using the AI phone bots calculator, validate assumptions in a short intro call.
Browse all cost calculators in the costs overview.
Calculator overall range
EUR 14,000–168,000 excl. VAT, depending on data and integrations
The overall range is derived from the valid parameters of the relevant cost calculator.
Typical duration
2–10 months
Main risk drivers
Non-binding indication
This result is only a non-binding indication based on typical assumptions. Effort and price must be calculated individually for your project.
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