Product Overview

The AI platform for better customer experiences.

AI Agents
Work with your customers.
- Voice
- Messages
- Chat
- Agent-to-Agent
Platform
Connect knowledge, systems, and actions.
- Workflows
- Browser Agent
- Simulations
- Integrations
- Insights & Analytics
Charlie
Work with your team.
Infrastructure
Model agnostic. Balance quality, speed, and cost.
- AI Models
- API & Developers
- Conversation Infrastructure
- Trust & Security

AI Agents

Help customers
get things done.

Answer questions, qualify requests, book appointments, and update records directly in your connected systems. Give agents your knowledge and rules, and define when they should hand over to your team.

Connect conversations and follow-ups across channels, so the work continues after the call.

Explore AI Agents

Hi, I need to move my installation. Thursday doesn’t work anymore.

No problem. Is the installation still at Lindenstraße 12?

Yes, that’s right.

The next free slots are Monday 9:00 and Tuesday 14:00. Which do you prefer?

Tuesday. Will the technician bring the new router as well?

Tuesday 14:00 is booked. I’ll pass the router question to your account team, they’ll confirm by tomorrow.

Appointment moved, CRM record updated

Router question handed over to the team

Confirmation sent by SMS

Charlie

Give your team an AI coworker for customer experience.

Tell Charlie what you want to achieve. Build an agent, create a workflow, investigate a conversation, or find where customers need more help.

Charlie works with your existing agents, workflows, and conversation history. Your team reviews changes before they go live.

Meet Charlie

What are the main customer support requests we could not resolve last week?

38 callers needed support about returning parcels. The agent could not find the return label and handed over.

Want me to draft a knowledge update so the agent can send the label link itself?

Yes, please.

Thought for 6 seconds

Reading the return label flow
Drafting the knowledge update
Running simulations12 passed
Preparing the change for review

Done. All 12 simulations passed. The update is ready for your review and goes live once you approve it.

Ask Charlie anything

Platform

Connect the conversation
to the work behind it.

Give agents the information and tools to complete customer requests. Test how they behave, see what happens in real conversations, and use what you learn to improve.

Explore Platform

Workflows

Keep the next step moving. Send follow-ups, update records, and trigger actions based on what happened.

Browser Agent

Complete tasks in browser-based systems when an API is not available.

Simulations

Test before customers do. Run realistic scenarios and check whether agents answer and act as expected.

Context Engine

Bring approved knowledge, customer history, and process rules together, and reuse that context across agents and workflows.

Integrations

Work with your existing systems. Connect your CRM, calendars, and business tools so agents can find information and take action.

Insights & Analytics

See what needs attention. Review conversations, track outcomes, and find where the customer experience can improve.

Infrastructure

The foundation to run
and build on telli.

Your business knowledge and workflows live in the platform, separate from the model you choose. Evaluate new supported models while reusing that foundation. telli connects models, telephony, and tools, and gives your developers APIs to build on.

Explore Infrastructure

AI Models

Model agnostic by design. Choose models for your use case, language, quality, speed, and cost. Test supported alternatives against your own scenarios before switching.

OpenAI
Google Gemini
ElevenLabs
Cartesia
And more

{
  "event": "call.completed",
  "contact": {
    "name": "Alex Morgan",
    "language": "en"
  },
  "outcome": "appointment_booked",
  "appointment": {
    "type": "consultation",
    "timezone": "Europe/Berlin",
    "status": "confirmed"
  },
  "context": {
    "channel": "voice",
    "follow_up": "email"
  },
  "next_steps": [
    "send_confirmation",
    "update_customer_record"
  ]
}

API & Developers

Connect your software through APIs and webhooks. Work with telli from Claude, Codex or your personal harness directly via MCP.

Learn more

Conversation Infrastructure

Manage telephony, phone numbers, and messaging in the same platform.

TelephonyPhone numbersMessaging

Trust & Security

Control access and how customer data is handled, with security requirements considered from setup.

From your first use case to everyday work.

We help you connect your systems, test your agents, and get your team ready. Start with one customer need, then expand on the same platform.

See how telli would handle a real customer journey in your business.

Book a demo