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Have you ever calculated how much time your team spends on routine calls each week? Scheduling appointments, answering standard questions, forwarding calls – all of this can now be handled by an AI phone assistant . These systems answer calls, hold natural conversations, book appointments, and provide information – 24/7.
There are now over 20 relevant providers in the DACH region, which vary significantly: from affordable self-service solutions for small businesses to enterprise platforms with extensive integrations. This article provides a concise overview of the most important providers, their pricing models, and use cases – helping you quickly assess which solution fits your requirements.
What is an AI phone assistant and how does it work?
An AI phone assistant is essentially a voicebot that automates the handling of incoming (and sometimes outgoing) calls. Technologically, several components work together: a speech-to-text system converts speech into text, a large language model (e.g., GPT-class or local models) understands the context and formulates an appropriate response, and a text-to-speech module delivers this response in natural language.
Modern systems also use RAG technology (Retrieval-Augmented Generation) to access company-specific knowledge bases. This allows the assistant to query opening hours, product details, or availability, for example, without the need for manual programming. Most providers promise a setup time ranging from a few minutes to a maximum of one hour – depending on the complexity of your requirements.
Overview of the most important providers
The market has become highly differentiated in recent years. While some providers focus on specific industries, others position themselves as universal solutions for small and medium-sized enterprises. The following table gives you an initial overview of the core features:
fonio – Flexible and fair pricing
fonio positions itself as a comprehensive solution for small and medium-sized enterprises. The system offers over 22 natural-sounding voices, supports RAG-based knowledge bases, and can perform live web searches when needed. A particularly useful feature is the ability to configure the assistant to seamlessly hand off complex inquiries to a human agent.
The entry-level package starts at 99 euros per month and includes 1,000 minutes of talk time. For trade businesses or service providers that frequently handle standard inquiries, this is usually sufficient. Additional minutes can be added flexibly as needed.
VITAS – Specializing in healthcare
VITAS has focused heavily on medical practices, clinics, and care facilities. This is reflected in pre-configured workflows for appointment booking, prescription requests, and patient callbacks. Pricing is tiered: the Flex package is 49 euros per month, Basic is 119 euros, and Plus is 299 euros—each with varying minute allowances and feature sets.
For smaller practices with a manageable call volume, the Flex package may be enough. Once multiple locations or more extensive integrations with practice management software are required, it is worth considering the higher-tier packages.
IONOS AI Phone Assistant – Entry-level for existing customers
The IONOS AI Phone Assistant is primarily aimed at small businesses that already use other IONOS services. With a starting price of 39 euros per month, it is one of the most affordable options on the market. Integration with the existing IONOS cloud phone system significantly simplifies the setup process.
However, there is a limitation: the feature set is relatively restricted. For businesses looking for nothing more than a digital answering machine with appointment coordination, this is sufficient. Those requiring more complex workflows or deeper CRM integrations will quickly reach its limits.
Placetel AI and smao.ai – Focus on speed
Placetel AI is integrated directly into the Placetel cloud phone system. According to the provider, setup can be completed in under 15 minutes—a promise also made by smao.ai. With smao , the focus is on German hosting locations and GDPR-compliant operation without routing data through US servers.
Both providers are suitable for teams that already use a cloud phone system and want to easily add AI features. Prices are in the mid-range, and setup is indeed quick—provided the existing infrastructure is compatible.
assistent24 – Managed service with an industry focus
assistent24 follows a different model: instead of self-service, it offers a managed approach with personal support. This is reflected in the price, which starts at 199 euros per month. In return, you receive assistance with setup, ongoing optimization, and a dedicated contact person.
assistent24 is particularly interesting for trade businesses, property management companies, and similar sectors that need to map specific workflows. The CRM integrations here are significantly more extensive than those offered by the lower-cost entry-level solutions.
What to look for when choosing
When deciding on an AI phone assistant , several factors come into play. The top priority is GDPR compliance: Ensure that providers host their servers in the EU and can provide the appropriate certifications. Most DACH-region providers now meet this requirement as standard.
Another point is integration with existing systems. Do you already use a CRM like HubSpot, Pipedrive, or an industry-specific tool? If so, the phone assistant should be able to connect to it seamlessly. Some providers, such as assistent24 or fonio, offer pre-built interfaces, while others rely on open APIs.
The Pricing structure varies significantly: While IONOS and VITAS use flat-rate models, others charge per minute of conversation. Estimate realistically in advance how many calls you expect per month. For 200 calls of 3 minutes each (= 600 minutes), a per-minute model might be worthwhile, whereas a flat rate is usually better for significantly higher volumes.
Practical examples: Where AI phone assistants work particularly well
Skilled trades: Appointment coordination without interruptions
Trade businesses benefit significantly from automated appointment requests. The assistant takes the request, checks availability in the linked calendar, and confirms a suitable slot immediately. The team stays focused on their actual work, while customer service does not suffer.
Medical practices: Relieving the front desk
In medical practices, a large portion of calls concerns standard questions: opening hours, prescription refills, and appointment rescheduling. An AI phone assistant can handle these inquiries without human intervention. This gives medical staff more time for patient care on-site.
Private use: Intelligent answering machine
AI phone assistants can also be used privately, for example as an advanced telephone answering machine. Instead of just recording a message, the assistant can clarify simple questions or coordinate appointments for tradespeople. However, most providers are primarily geared toward business customers – there are still relatively few specialized solutions for private use.
Conclusion: Which AI phone assistant is right for you?
Choosing the right AI phone assistant depends heavily on your industry, call volume, and integration requirements. For small businesses with limited budgets and straightforward needs, IONOS or VITAS (Flex) are solid choices. If you need more flexibility and deeper integrations, you should take a closer look at fonio or smao.ai. Trade businesses and specialized service providers are often better served by assistent24, as their managed approach saves a significant amount of coordination effort.
The best way to get started: Use the providers' free trial periods to test how well the assistant fits into your existing processes. Most systems can be configured in less than an hour, giving you a realistic sense of their practical utility. Start with a clearly defined use case—such as appointment scheduling—and gradually expand the functionality once the system is up and running.
Frequently Asked Questions
Which AI phone assistants are available?
In the DACH region, fonio, VITAS, IONOS, Placetel AI, smao.ai, and assistent24 are among the most well-known providers. In addition, there are specialized solutions such as PraxisConcierge for medical practices or RufLab for SMEs. The right choice depends on your industry and functional requirements.
How much does an AI phone assistant cost?
Prices vary significantly: entry-level solutions like IONOS start at 39 euros per month, while mid-range providers like fonio or smao.ai range from 69 to 99 euros. Managed services like assistent24 start at 199 euros. In addition, there are often usage-based costs per minute of conversation.
Which AI phone assistant is the best?
That depends on your requirements. VITAS is well-suited for medical practices, while trade businesses are often better off with fonio or assistent24. IONOS is suitable for small businesses with simple requirements, whereas smao.ai and Placetel AI are aimed at businesses with an existing cloud phone system.
What is the name of the AI you can talk to?
Most AI phone assistants use large language models like GPT variants or comparable technologies. Providers like fonio use individually trainable models that can be adapted to your company's tone of voice. Most providers do not disclose the specific model names.
Are there free AI phone assistants?
Completely free solutions for long-term use are rare. However, most providers offer free trial periods ranging from 7 to 30 days. There are occasional cheaper or free versions for private use, but these are often severely limited in functionality.
Posted by:
Jens is the co-founder of bakedwith, a boutique consultancy firm specialising in smart automation and AI. He helps medium-sized companies and corporations to optimise processes, reduce manual work and achieve growth through efficient workflows. Previously, he was Growth Lead at OMR and worked as a freelancer, helping numerous companies optimise their CRM and automation systems. Jens is passionate about combining growth and efficiency to enable teams to focus on what matters most.
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