Alternative
VITAS and Call0 in a fact comparison
VITAS is a phone assistant from Nuremberg for companies of any size and industry. Call0 is an AI phone assistant for small and medium-sized businesses that you create from your website.
As of 16 October 2026
What VITAS publishes
- VITAS offers a 30-day trial without payment details. Source: telefonassistent.de
- The FLEX plan costs €49 per month; each conversation is billed separately. Source: telefonassistent.de
- Your own phone system forwards to an individual assistant number; SIP trunking is an alternative. Source: telefonassistent.de
The facts side by side
| Feature | VITAS | Call0 |
|---|---|---|
| Focus according to the provider | Phone assistant for companies, regardless of size and industry according to the providerSource: vitas.ai | AI phone assistant for small and medium-sized businesses; the agent is created from the company’s own websiteSource: call0.ai |
| Entry price and what it includes | FLEX: €49 per month with no included volume, then €0.28 per conversation; netSource: telefonassistent.de | Launch: €110 per month or €1,188 per year; 700 minutes, 3 concurrent calls; netSource: call0.ai |
| Free trial | Yes, 30 days, without payment detailsSource: telefonassistent.de | Yes, 15 test minutes without a credit card; no phone number in the Free planSource: call0.ai |
| German | Website in GermanSource: vitas.ai | Website and product in German; 13 agent languagesSource: call0.ai |
| How to start | Sign up online for the trial or book a consultationSource: vitas.ai | Sign up online; Enterprise on requestSource: call0.ai |
| Phone number | Individual assistant number as the forwarding destination of your own phone system; alternatively SIP trunkingSource: telefonassistent.de | 1 number included in the Launch plan; each additional one €15 per month; forwarding your own number requires a paid planSource: call0.ai |
| Integrations named | Calendar for scheduling appointmentsSource: telefonassistent.de | Over 500 in the directory, including calendars, CRM and ticketing systems; WhatsApp is under maintenanceSource: call0.ai |
| Provider’s registered seat | VITAS GmbH, Nuremberg, GermanySource: vitas.ai | Call0 Inc., New York, USASource: call0.ai |
Call0 at a glance
- Setup
- You enter your website address. Call0 prepares the assistant from it and calls you for a test.
- Plan
- Launch costs €110 per month or €1,188 per year and includes 700 minutes, 3 concurrent calls and 1 phone number. Each additional minute costs €0.16.
- Trial
- 15 test minutes in the browser, without a credit card.
- Languages
- The agent speaks 13 languages.
- Integrations
- Over 500 integrations in the directory, including calendars, CRM and ticketing systems.
What you should know about Call0
- The provider is a US company: Call0 Inc., New York.
- Data is not processed exclusively in the EU. The privacy policy names Ireland, the USA and worldwide processing, among others.
- WhatsApp is under maintenance and cannot currently be activated.
- Contracts are available to business customers only.
- The Free plan does not include a phone number.
Stay with VITAS if …
- a provider based in Germany matters to you
- you prefer to pay per conversation rather than with included minutes
- you want to discuss the setup in a consultation
Choose Call0 if …
- you want to start online today without a sales call
- the assistant should be created from your website
- 3 concurrent calls should be included from the entry plan (Launch) onwards
- besides the phone, you also want to use a chatbot or an email assistant from the same provider
What matters when you switch
- Concurrent calls
- If several callers should get through at the same time, a plan with one line does not help, however low its price.
- Term and setup fee
- For a pilot, a plan that can be cancelled monthly is usually the simpler choice.
- Keeping your number
- Forwarding when the line is busy or outside opening hours is usually the easiest start; porting is rarely needed.
- Data
- Ask where the language model and transcripts are processed, how long they are stored and whether there is a data processing agreement.
More alternatives to VITAS
According to each provider’s own focus, with sources in the provider comparison.
- livestep – Best for: Companies that want to use AI telephony together with a marketing platform
- Vokaro – Best for: Businesses with industry software such as THEORG or onOffice that want to start with an introductory call
- fonio – Best for: Businesses in German-speaking countries looking for fixed minute packages and a provider in the EU
- Placetel AI – Best for: Businesses that already use a phone system and want to add the assistant
- voiceOne – Best for: Small businesses, practices and law firms that want to set up online themselves
- Audelia – Best for: Businesses that want to combine AI with a human phone team
Frequently asked questions
How long can I try VITAS and Call0 for free?
VITAS states 30 days without payment details. Call0 offers test minutes in the browser without a credit card; at Call0 a phone number comes only with a paid plan. Both statements are in the table with their source.
Do VITAS and Call0 bill the same way?
No. In the FLEX plan, VITAS charges a base price and each conversation separately. Call0 states monthly plans with included minutes and a price per additional minute.
Read on: All providers compared · Costs at a glance · Facts about Call0
As of 16 October 2026. Call0 is itself one of the providers named. All information comes from the linked pages of the providers and was checked on the date stated; the page of the respective provider is authoritative. No products were tested and no ratings were given. Brand names belong to their owners; no partnership is claimed. If an item is no longer correct, write to support@call0.ai.