Quick picks
Telli alternatives at a glance
Telli and 6 alternatives compared on build model, best fit, Nordic and Dutch language support, and data handling and compliance.
| Platform | How you build | Best for | Nordic & Dutch | Data & compliance |
|---|
| Sono |
Ready-made agents, built and tested for you |
European businesses that want calls handled, with no technical work |
Yes: strongest in smaller European languages, Nordic and Dutch included |
EU hosting; GDPR, SOC 2 and ISO 27001 for every customer |
| Fonio |
Self-serve no-code: build your own agent in minutes |
Small businesses in the DACH region that want a DIY agent fast |
Yes: published list incl. all five; optimised for German and English |
GDPR, EU AI Act; hosted in Germany; no SOC 2 or ISO 27001 claim found |
| Synthflow |
No-code Flow Designer plus API; agency white-label |
Agencies and ops teams that want no-code building and EU hosting |
Yes: about 35 languages incl. all five, plus German and Polish |
SOC 2 Type 2, ISO 27001, GDPR; EU cluster for storage and compute |
| PolyAI |
Managed enterprise build on Agent Studio |
Large contact centres with enterprise budgets and timelines |
Multilingual; no public list |
SOC 2 Type 2, ISO 27001, PCI; US, UK, EU and APAC residency |
| Retell AI |
No-code canvas plus APIs and SDKs |
Teams with some technical capacity that want a visual builder and an API |
Yes: 55 languages incl. Finnish, Swedish, Norwegian, Danish, Dutch |
SOC 2 Type II, ISO 27001, HIPAA; US processing, GDPR via SCCs |
| Bland AI |
API plus Conversational Pathways flow builder; forward-deployed engineers |
US enterprises with engineers and high-stakes call volumes |
40+ languages; no per-language list published |
SOC 2 Type I and II, HIPAA, PCI DSS; EU residency mentioned, no regions named |
| Telli |
No-code telli Studio plus API; hands-on onboarding |
Mid-market and enterprise B2C brands running calls at volume |
No published list; names English, German, French, Spanish, Dutch, Italian |
SOC 2 Type II, GDPR, HIPAA; EU hosting |
Based on each vendor's public materials as of 14 October 2026. “Nordic & Dutch” means Finnish, Swedish, Norwegian, Danish and Dutch appear on the vendor's published language list.
Why teams look for Telli alternatives
- Your languages aren't on the list. Telli publishes no language list, and its pages give different counts. The languages it names are English, German, French, Spanish, Dutch and Italian. If your callers speak Finnish, Swedish, Norwegian or Danish, ask for test calls first.
- You mainly need inbound reception. Telli's focus is B2C operations at volume: lead qualification, reactivation, parallel outbound dialling. A business that mostly needs its phone answered and appointments booked may not need that machinery.
- Security questionnaires ask for ISO 27001. Telli lists SOC 2 Type II, GDPR, HIPAA and EU hosting. We found no ISO 27001 claim, which some procurement teams require.
The 6 best Telli alternatives
01
1. Sono
Best for: European businesses that want calls handled, with no technical work
Sono is a managed AI phone agent from Helsinki. You get a ready-made agent that Sono's team has trained on your business, connected to your website, calendar and CRM, and tested with real calls before it goes live. It answers inbound calls as an AI receptionist and places outbound calls such as payment reminders from the same system.
- Ready-made agents, trained on your business and tested with real calls before go-live
- No technical knowledge needed: no flows to design, no code to write
- Hands-on support from Sono's own team, typically replying within 24 hours
- Strongest in smaller European languages such as Finnish, Swedish, Norwegian, Danish and Dutch
- GDPR, EU data hosting, SOC 2 and ISO 27001 for every customer, not only on enterprise plans
Compared with Telli: Both are European and both do inbound and outbound, including payment reminders. Sono delivers ready-made agents for small and mid-sized businesses, is strongest in smaller European languages such as Finnish, Swedish, Norwegian, Danish and Dutch, and covers every customer with EU hosting, SOC 2 and ISO 27001, with support that typically replies within 24 hours.
02
2. Fonio
Best for: Small businesses in the DACH region that want a DIY agent fast
Fonio is a Vienna-based AI phone assistant for small businesses and the self-employed, from hotels and trades to property managers and car dealers. You build the agent yourself in a no-code editor (“create your own AI phone agent in 30 seconds”), connect tools such as Google Calendar, Cal.com or n8n, and it runs on servers in Nuremberg. Its knowledge base lists more than 25 languages and says the product was optimised for German and English.
Compared with Telli: Another German-market start-up, but self-serve and aimed at small businesses that want to build a simple inbound assistant themselves. Optimised for German and English.
Source: Fonio language docs
03
3. Synthflow
Best for: Agencies and ops teams that want no-code building and EU hosting
Synthflow is a Berlin-based voice AI platform with its own telephony, a visual Flow Designer, templates and an API, plus a white-label programme for agencies with client sub-accounts. It advertises 200+ integrations, and since May 2026 new workspaces can run on an EU cluster that keeps storage and compute inside the EU.
Compared with Telli: For teams that want to build their own inbound or outbound flows in a no-code designer, with an EU cluster and SOC 2 and ISO 27001 in its trust centre.
Source: Synthflow EU cluster changelog
04
4. PolyAI
Best for: Large contact centres with enterprise budgets and timelines
PolyAI builds customer-service voice agents for large enterprises, with customers such as NatWest and UniCredit. Deployments run on its Agent Studio, from no-code to full code, and it lists SOC 2 Type 2, ISO 27001, PCI and GDPR with regional data residency.
Compared with Telli: A managed enterprise service for large contact centres, with SOC 2 Type 2, ISO 27001, PCI DSS and EU data residency.
Source: poly.ai
05
5. Retell AI
Best for: Teams with some technical capacity that want a visual builder and an API
Retell AI is a San Francisco voice agent platform for automating phone calls. Non-developers build flows on a drag-and-drop canvas and developers work through its APIs and SDKs. It lists SOC 2 Type II, ISO 27001, HIPAA and GDPR, and publishes a 55-language list. Its compliance docs say it does not currently operate services in the EU; GDPR rests on standard contractual clauses.
Compared with Telli: A flexible builder with a canvas and API, a 55-language list and US data processing.
Source: Retell AI compliance docs
06
6. Bland AI
Best for: US enterprises with engineers and high-stakes call volumes
Bland is a San Francisco enterprise voice AI platform for inbound and outbound phone agents. Developers build on its API and Conversational Pathways flow graph, and Bland's forward-deployed engineers help build the first agent. It says it runs its own speech-to-text, language and text-to-speech models, and lists SOC 2, HIPAA and PCI DSS with self-hosted options.
Compared with Telli: A US enterprise platform with its own models, strong at high-volume outbound, built by your engineers with Bland's help.
Source: bland.ai
Who should stay with Telli
Stay with Telli if you are a B2C brand in German-speaking or Western European markets running large outbound programmes, such as lead qualification and reactivation, and you want CRM-native workflows in Salesforce or HubSpot with hands-on onboarding.
How to choose a Telli alternative
- Who builds and maintains the agent. You, an agency, or the vendor. This decides your real cost more than any per-minute rate.
- Your callers' languages. A language on a list is not the same as a good call in that language. Test with real callers in each language you serve.
- Where call data is stored and processed. Ask for the DPA, the data region and the security certificates in writing; storage and processing can sit in different places.
- Inbound and outbound in one system. Answering, bookings and outbound calls like reminders or confirmations, without stitching two vendors together.
- Integrations. The calendar, CRM, booking or billing systems the agent must read from and write back to.
- Who fixes it when it breaks. Support hours, response times, and who listens to the recordings and improves the agent.
Frequently asked questions
What is the best Telli alternative?
For ready-made agents in Nordic and Dutch languages, Sono. For a DIY assistant for small businesses, Fonio. For building your own flows with EU hosting, Synthflow. For large enterprise contact centres, PolyAI. For a canvas plus API, Retell AI. For a US enterprise platform, Bland AI.
Which languages does Telli support?
Telli publishes no language list; its pages mention between 20 and 40 languages and name English, German, French, Spanish, Dutch and Italian. Confirm your languages with test calls.
Is there a Telli alternative for payment reminder calls?
Yes. Sono runs AI payment reminder calls before collections as well as inbound reception, in the customer's own language, with EU hosting, SOC 2 and ISO 27001.
Does Telli have ISO 27001?
As of October 2026 we found SOC 2 Type II, GDPR, HIPAA and EU hosting listed by Telli, but no ISO 27001 claim. Ask Telli's team directly if you need it.
More comparisons:
Bland AI · Synthflow · Retell AI · Vapi · ElevenLabs Agents · PolyAI · Fonio · Parloa · Lynes ·
Want the phone answered without building the agent?
Sono delivers a ready-made agent trained on your business, in your customers' language, with EU data hosting and a support team that typically replies within 24 hours.