Chatbot Software Comparison — Types & Criteria
FAQ bot, AI chatbot, live chat, omnichannel platform: we explain the differences, show selection criteria and help you find the right chatbot software for your business.
Why a Chatbot Comparison Matters
The term "chatbot" covers very different products — from simple FAQ bots to full AI platforms with omnichannel inbox, handover and automation.
A simple bot is often not enough when customers write on multiple channels, phrase questions variably, or handovers to staff are needed.
This comparison helps you define the right criteria — and find the right solution for your team.
5 Types of Chatbot Software
Answers only exactly stored questions. Free-form phrasing is not understood. Suitable for very stable, standardized FAQs.
Understands free language, uses a knowledge base and answers contextually. No scripting of every answer required.
Staff answer manually in real time. Good for advisory first contacts, but not scalable without sufficient team.
AI chatbot handles standard requests; complex cases are seamlessly handed over to staff including full conversation history.
AI chatbot and omnichannel inbox for webchat, WhatsApp, Telegram, SMS and email in one interface — Telephony is bookable via the Zentor SIP-Voicebot.
What Zentor App Delivers
Zentor App combines AI chatbot, knowledge base, handover function, omnichannel inbox and n8n automation in one platform — and does not stop at simply answering questions: depending on configuration and connected systems, Zentor App books appointments independently, processes changes and cancellations, and triggers actions in connected systems.
The AI chatbot exclusively uses your own knowledge base. Webchat is already included in the Starter plan, WhatsApp/Telegram/SMS/email as a channel are add-on modules in the Individual (Individuell) plan. Telephony is bookable via the Zentor SIP-Voicebot.
€0 / 14 days
AI chatbot, webchat, knowledge base, with Zentor branding, ends automatically
€49/month
1 website, webchat, AI chatbot, own knowledge base
up to €899/month
WhatsApp, Telegram, SMS, email, omnichannel inbox, n8n automation, teams/roles, On-Premises — freely configurable, offer before payment. Telephony (bookable, individual setup).
All prices are final under §19 UStG — no VAT is charged. Demo €0, Starter €49 setup, Individual (Individuell) setup up to €399. Full pricing overview
Criteria for Comparison
GDPR & Hosting
EU hosting, DPA and clear data protection statements are mandatory for B2B. On-premises option for sensitive data.
Channel Coverage
Webchat alone is usually not enough. WhatsApp, Telegram, SMS, email, and telephony in one omnichannel inbox — six channels live and usable.
Knowledge Base
Can the bot use your own company texts and documents, or does it answer generically from AI training?
Handover Function
Is conversation history and context transferred when handing over to staff?
Integrations
Can the platform connect to existing systems? Workflow automations without major development effort?
Price Transparency
Are base price, setup costs and channel costs clearly stated? No hidden costs.
Onboarding
How quickly is the platform ready to use? Professional onboarding shortens time-to-value.
Support
Email support, prioritized support or dedicated contact person depending on system criticality.
Comparison: Chatbot Types at a Glance
| Merkmal | FAQ-Bot | KI-Chatbot | Live-Chat | Zentor App |
|---|---|---|---|---|
| Freie Sprache verstehen | ✗ | ✓ | ✓ (Mensch) | ✓ |
| Wissensdatenbank | ✗ | ✓ | ✗ | ✓ |
| Handover an Mitarbeiter | ✗ | variabel | ✓ | ✓ |
| 24/7 automatisch | ✓ | ✓ | ✗ | ✓ |
| WhatsApp / Telegram / SMS | ✗ | variabel | variabel | ✓ ab Individuell |
| Telefonie | ✗ | variabel | variabel | zubuchbar |
| DSGVO EU-Hosting | variabel | variabel | variabel | ✓ |
| On-Premises möglich | ✗ | selten | selten | ✓ Individuell |
| n8n-Automatisierung | ✗ | ✗ | ✗ | ✓ ab Individuell |
Merkmale anderer Anbieter können variieren. Tabelle basiert auf allgemeinen Marktmerkmalen (Stand: Juni 2025).
Chatbot Software in the DACH Market: What Businesses Need to Know
The DACH market has special requirements for chatbot software. GDPR compliance, EU hosting and data processing agreements are not optional features here, but a legal obligation...
In addition, German B2B businesses have high expectations regarding quality, transparency and reliability...
- GDPR obligation: every chatbot conversation containing personal data is subject to GDPR
- EU hosting as minimum requirement: data storage outside the EU without standard contractual clauses is critical
- Data Processing Agreement (DPA) under Art. 28 GDPR must be available to conclude
- For sensitive industries (healthcare, legal, finance): on-premises option as the only secure alternative
What Does Chatbot Software Cost in a Market Comparison?
Chatbot software is available in very different price ranges...
For professional B2B use in the DACH region, businesses typically budget €200 to €2,000 per month plus one-time setup costs...
- Free tools: severely limited, no EU hosting, no knowledge base, no professional integration
- Entry level (under €100/month): simple live chat or rule-based bot, without AI, without omnichannel
- Mid-market (€200–€1,500/month): AI chatbot + omnichannel, Zentor App falls in this range
- Enterprise (from €2,000/month): dedicated infrastructure, SLA, custom integrations, on-premises
Decision Guide: Which Solution Suits Which Business?
Choosing the right chatbot software does not depend on trends or marketing promises, but on concrete, measurable requirements...
- Small business, 1–10 employees, website + email: Starter plan with AI chatbot and webchat is sufficient
- Mid-sized business, multiple channels, teamwork: Individual (Individuell) plan with omnichannel inbox, WhatsApp, n8n automation and freely configurable user count
- Agency or multi-tenant operation: platform with tenant separation, role-based access and central knowledge base management
- Compliance requirements: Individual (Individuell) plan with on-premises option, Vector-RAG, SSO, SLA and dedicated onboarding
Common Mistakes in Chatbot Software Selection
Many businesses choose the wrong solution — not due to lack of research, but because of incorrect criteria or incomplete product demos.
The most common mistake: only comparing the base price...
- Only looking at the base price — calculate setup, channel costs and user limits separately
- Testing the demo without your own data — only real customer questions reveal the quality of the knowledge base
- Underestimating GDPR requirements — EU hosting and DPA are mandatory for personal chat data
- Not planning for scalability — a solution that works well with 3 users can quickly hit technical or licensing limits with 20 parallel agents
Implementation: From Selection to Ongoing Operation
After choosing a chatbot platform, implementation follows...
- Phase 1 — Technical integration: embed widget code, configure domain, set up channel connections
- Phase 2 — Content configuration: fill knowledge base, set up branding, define handover rules, configure GDPR
- Phase 3 — Testing and go-live: conduct test conversations, check response quality, train team, go-live and set up monitoring
How Chatbot Software Stays Up to Date Long-Term
Chatbot software is not a one-time project, but ongoing operations...
Best practice: changes to prices, products or processes are updated in the knowledge base in parallel...
- Knowledge base updates take effect immediately — no model retraining required
- Website crawling: Zentor App can be configured to automatically import website changes
- Manual entries directly in the dashboard: FAQ, product texts, price lists, process documents
- Version history of the knowledge base: changes are traceable and reversible
Frequently Asked Questions
What is the difference between AI chatbot and FAQ bot?+
An FAQ bot only answers exactly stored questions. An AI chatbot understands free phrasing and uses a knowledge pool.
When is a simple FAQ bot sufficient?+
When questions are very standardized and rarely change. For complex products or high inquiry volume, an AI chatbot is more suitable.
How do I compare chatbot prices sensibly?+
Beyond the base price: consider setup costs, channel costs, user limits and support. Omnichannel packages are often more economical than individual tools.
Is there a free chatbot for websites?+
Free tools have strong limitations regarding GDPR and knowledge base scope. For B2B use, paid EU platforms are recommended.
What is the advantage of omnichannel platforms?+
All channels run in one inbox. No switching between WhatsApp, email and chat. Teams stay organized, response times drop.
Does chatbot software need to be GDPR-compliant?+
Yes, as soon as personal data is processed — which is the case with every chat conversation. EU hosting, a DPA under Art. 28 GDPR and consent-based data processing are minimum requirements for businesses in the DACH region.
What is the difference between a chatbot and live chat?+
Live chat requires a human agent who responds in real time. A chatbot responds automatically, 24/7, without staffing effort. The best solution combines both: AI first response + handover to staff when needed.
Which chatbot software is suitable for small businesses?+
For small businesses, a platform that is quickly ready to use, requires no developer and is transparently calculable is ideal. Zentor App Starter from €49/month covers AI chatbot and webchat without technical setup knowledge, or try the 14-day free demo.
How many conversations can an AI chatbot handle simultaneously?+
Unlike a human agent, an AI chatbot is virtually infinitely scalable — it can theoretically hold an unlimited number of conversations at the same time, with no waiting times. The actual monthly total depends on your plan: the Starter plan includes 500 conversations/month, while the Individual (Individuell) package has no technical limit.
Can a chatbot be integrated into CRM systems?+
Yes. Modern chatbot platforms offer webhook outputs or direct API integrations...
Can you operate a chatbot without programming knowledge?+
Yes, if the platform is designed as a no-code solution...
What distinguishes good chatbot software from bad?+
Good chatbot software is characterized by answer quality from its own knowledge base...
Try Zentor App
See in the demo how AI chatbot, knowledge base, handover and omnichannel inbox work together in one platform.