Every customer call, 
handled by AI.

The #1 AI voice platform for agents that sell, support and operate - across millions of calls

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.

Emma is ready

Watch Demo

telli API

curl --request POST \
    --url https://api.telli.com/v1/calls \
    --header 'Authorization: Bearer <api_key>' \
    --header 'Content-Type: application/json' \
    --data '{
    "agent_id": "agent_sophie_01",
    "phone_number": "+49 30 123456789",
    "language": "de",
    "metadata": {
      "lead_source": "website",
      "campaign_id": "camp_2024_q1"
    }
  }'

View full API docs at docs.telli.com →

Case Study

Trusted by hundreds of leading B2C companies — from large to small.

See how these companies use telli to automate their call operations.

Customer Stories

Use Cases

Driving Results Across Teams

Sales

Generate uplift with the only AI phone platform on the market that actually wins and retains more customers.

Lead Qualification

Reach more customers, qualify intent and book relevant sales meetings — automatically.

Upselling

Identify interest and turn service into sales conversations.

Reactivation

Activate dropped customers and drive adoption at scale.

Win-back

Re-engage churned customers with personalized offers and incentives at scale.

Appointment Setting

Book qualified meetings directly into your team's calendar.

Discover more Use Cases

Operations

Streamline your operations with AI phone agents that complete tasks end-to-end, from scheduling to payment collection.

Appointment Scheduling

Schedule and confirm appointments at scale with real-time calendar availability.

Reminders & Follow-up

Follow up on inquiries and send automated reminders.

Payment Collection

Follow up on overdue payments and free up your team.

Data Collection

Gather customer information, run surveys, and enrich CRM records at scale.

Discover more Use Cases

Customer Service

Create great customer experiences that turn service conversations into satisfaction and revenue.

Proactive Care

Trigger outbound care calls to solve issues proactively before customers churn.

IVR & Receptionist

Accept calls, identify intents, and route intelligently.

1st level Support

Handle multi-step requests and take system actions.

Feedback & Surveys

Collect customer feedback and run satisfaction surveys through natural conversations.

Discover more Use Cases

Homeday

1st Level Support for Inbound Calls

Enpal

Appointment Booking for Sales Representatives

Viessmann

Follow-up for Customer Engagement

Learn More

How telli works

The AI platform for your call operations

The telli Method — developed with and used by leading companies globally

Build human-like agents with the simplest agent creator on the market. No technical knowledge needed.

telli Studio

Intuitive no-code agent builder to change and improve conversations with natural text.

Multi-lingual Agents

Deploy agents in 20+ languages with native fluency.

Model Agnostic

Natural Voices & Cloning

Curated voice library plus voice cloning to stay on brand.

Knowledge Base

Upload documents and FAQs so your agent always has the right answer.

Integrations

Connect to Salesforce, HubSpot, and any CRM via native integrations or API.

Run you call center operations on auto-pilot

Actions

Allow your agent to do real-time actions during the call with pre-built actions or custom ones.

Workflows

Build post-call workflows and connect telli with the systems you are working with.

Phone Number Management

Use telli phone numbers or bring your own via SIP trunking.

Contact Management (CRM)

Manage your contacts in telli, sync properties with your CRM and always keep information up to date.

Live Monitoring

Get a live overview of current calls and working agents

Smart Dialing

Optimize call timing, retry logic, and parallel dialing for maximum pickup rates.

Improve your AI voice agents over time with testing & analytics

Analytics

Real-time dashboards with conversion rates, call duration, and outcome tracking.

Call Outcomes

Get pre-built and custom outcomes after every call — from summaries to sentiment and structured data.

Call Reviews

Listen to recordings and read full transcripts to understand every conversation in detail.

Testing

Talk to your agent via voice or chat directly in the app to test changes before going live.

A/B Testing

Compare agent versions side by side and pick the one that converts best.

Scale your operations internationally at scale without adding headcount

Global Agents

Deploy AI voice agents in 30+ languages with local accents and cultural context.

Parallel Calls

Scale from 1 to thousands of parallel calls without people and infrastructure changes.

Evaluations & QA

Flag calls that need attention and mark them as pass or fail to maintain quality.

We honor your trust.

Your trust is our priority. We safeguard your data with the highest standards of security and compliance, ensuring every interaction is protected and every user feels secure.

Customer Stories

Loved by leading teams

See how industry leaders use telli to simplify their call operations

One of the best real value generating SaaS GenAI products out there

Andreas

CTO at Allrigth

Voice AI that truly changes our daily sales activities: Thanks to this great support, my team can focus much more on the truly relevant conversations and is significantly relieved in day-to-day business.

Burhan

Head of Sales at McMakler

Impressive call quality. Some of our clients were sure all the way through to the end of the call that they weren't speaking with an AI at all, despite us clearly stating multiple times before and during the conversation that they were interacting with an AI.

Marc Vincent

Head of Venture Development

We’ve been using telli for three months to book appointments with leads, and the results have been great. It’s surprisingly easy to use, and the AI agent consistently books appointments at the same rate or better than our internal call center.

Tommaso Piatti

Director Operations

How Enpal boosts weekly service appointments by 30% with telli

“telli is flexible, scalable, and customer-centric. With telli, our team stays focused on what really matters.”

Lukas McKenzie

Business Development Manager at Enpal

View Case Study

How Bark adds 800 hours of weekly calling capacity with telli’s AI agents

“telli makes it possible to run high-quality phone workflows that would normally require a full team.”

John Oberlin-Harris

Executive General Manager for US, UK, and Canada at Bark

View Case Study

How Homeday delivers 24/7 inbound call coverage with telli

“The biggest benefit of partnering with telli is the relief for our team. Our employees can now focus on the tasks that truly move the business forward.”

Christoph Schaarschmidt

Customer Service Lead at Homeday

View Case Study

The most innovative companies build with telli. From startups to global enterprises

All Case Studies