telli Reviews & Product Details

We use Telli for inbound customer calls, so the first line support basically runs on it now. Honestly didn't expect a voice agent to sound this natural, German and English both fine and it handles the typical questions on its own without people noticing they talk to an AI. Setup was quick, first agent was live in a couple of days and the Telli team was super hands-on. Review collected by and hosted on G2.com.

To be honest, not much. Getting the tone and the call flow right took some trial and error, you play around with the prompt a lot in the beginning. Review collected by and hosted on G2.com.

What I particularly like about telli is the enormous relief it provides for the team in everyday work. telli independently takes over necessary but often time-consuming and recurring tasks. This saves us a lot of time and creates space for our employees to focus on the topics where personal contact and human expertise are really crucial.

For me, the greatest added value is that AI here is not just a technical innovation, but offers real support in day-to-day operations. This increases efficiency, relieves the team, and sustainably improves our processes. Review collected by and hosted on G2.com.

There is nothing here that stands out negatively to me. Overall, I am satisfied. Review collected by and hosted on G2.com.

What works best for us is the combination of multilingual voice agents and workflows. We run two outbound use cases in German, French and English, and setting up a new agent per language is fast. The custom tools are the real upside: the agent can trigger an action mid-call, like sending a payment link or handing over to a human colleague, and we wire that into our own automation stack.

Charlie, the built-in AI assistant, is genuinely useful. It builds and changes agent configuration and workflows for you, and it is good at checking its own work. When we asked it to change something that conflicted with a rule we had set, it stopped and asked instead of working around it. That matters when you are editing live agents.

The Salesforce integration lets us log every call back into our CRM, so the voice agent appears in the same reports as our human calls. Review collected by and hosted on G2.com.

The biggest gap for us is visibility when something breaks. If a custom tool call fails, the agent gets the error back but nobody on our side is notified. We had a case where tool calls had been failing for a month and we only found it because we went looking. Tool errors are stored on the call record, but there is no API to pull them and no account-level alerting, so you have to build your own monitoring around it.

Outcome fields are always filled in by a model after the call, never set directly from a tool result. That is fine for conversation outcomes, but it means “a tool failed” is an inference rather than a fact.

Workflows are tied to a single agent, so with six agents we maintain six identical copies of the same logic. A change has to be made six times.

Smaller things: the recording URL is only available in generic HTTP steps, so we cannot write it into our CRM, and there is no attempt counter available in workflows. Review collected by and hosted on G2.com.

Telli's performance in terms of language quality is outstanding. Conversations feel very fluid and natural. The AI agents operate at a remarkably high level: they understand customer concerns very precisely, respond empathetically, and solve even more complex issues surprisingly well. The Telli team is also extremely solution-oriented, fast, competent, and helpful. Additionally, the user interface is intuitively and clearly designed, making it easy to navigate. Review collected by and hosted on G2.com.

I have nothing to criticize about Telli so far. Everything has run smoothly and without problems. Review collected by and hosted on G2.com.

I like that telli lets us call customers at scale instead of doing it manually with humans. As a non-technical person, I find it really easy to use. It’s intuitive, the right features are there when I expect them, and the user interface is smooth. My favorite part is Charlie, telli’s in-house LLM, which makes analysis, agent refinement, and querying easy and seamless. I use Charlie to refine the agent script and the text spoken to customers based on feedback from calls, and to analyze patterns, trends, and results. The setup was very easy, and the telli team gave us a lot of hand-holding and really helped with implementation. I found the product great. Review collected by and hosted on G2.com.

We had some trouble reaching customers in international countries for telephony-related reasons. Calling China didn’t work at all for us. It wasn’t a breaking issue, but it wasn’t ideal, and most of our issues have been telephony-related. Review collected by and hosted on G2.com.

I appreciate telli's very natural conversation flow. Telli works in a solution-oriented, fast, modern, and interactive manner. This allows us to quickly implement what we technically need to meet the concerns of our customer service clients. Telli processes customer concerns based on AI, so we have fewer human customer service contacts and very high customer satisfaction. The integration was also very simple: we needed hardly any system integration and could work directly with telli. It was easy and fast. Review collected by and hosted on G2.com.

Currently, I have no criticism of telli. Of course, it could always be faster, but we are already at a very high implementation speed. Review collected by and hosted on G2.com.

It’s effective and innovative, especially in the way they keep making improvements and continuously shipping new features. It’s also easy to operate and straightforward to use. Review collected by and hosted on G2.com.

Nothing really comes to mind. It offers a lot of integrations, but we’re still submitting CSV files. Also, it would be helpful if it were easier to disable contacts from the dialer. Review collected by and hosted on G2.com.

The team was super helpful in getting my team and me up to speed with the platform, especially compared to competitors we have worked with in the past. they were always super fast to respond in the onboarding and first deployment process. Review collected by and hosted on G2.com.

With all the new features being rolled out, it's sometimes hard to keep track of everything that's already possible! We'd also like to see a few minor workflow enhancements, but those are already on their way to the platform! Review collected by and hosted on G2.com.

It’s not just another voice AI tool that sounds cool—Telli actually drives real business impact for us. Review collected by and hosted on G2.com.

They are adding a lot of new features and it is sometimes hard to keep up Review collected by and hosted on G2.com.

Telli offers a very natural AI agent and provides close support to match customers’ specific needs. The interface is easy to use and intuitive. API integration works well and the product is continuously performing better. Review collected by and hosted on G2.com.

Implementation can take a while and requires resources on the customers' side. First frustrations are fixed quickly though. Review collected by and hosted on G2.com.