Harmony launches voice AI agent platform for sales teams

Harmony has launched a voice AI agent platform for enterprise sales teams. The product was built by monday.com.

The platform is designed to manage sales calls from first contact through to a warm transfer to a live representative. It uses task-specific language models for lead qualification, data capture and objection handling.

Harmony enters a market where companies are trying to automate more customer contact without losing oversight of calls that can affect revenue, compliance and reputation. Its agents are designed for more complex sales interactions, not just routine customer service tasks.

The platform uses voice technology acquired from OneAI alongside a set of smaller proprietary models trained on customer conversations. Each model has a single function and is coordinated by a real-time predictive engine.

Harmony said its system responds in about 200 milliseconds from audio input to audio output, allowing agents to operate at a conversational pace while maintaining a contact rate of up to 70%.

Sales workflow

In practice, agents can handle prospecting, discovery, qualification, objection handling, and pitching before handing off a call to a human sales worker with a briefing. The platform also includes inbound routing, predictive and power dialling, branded caller ID, CRM write-back, and consent and compliance controls.

These features are built on Twilio's platform. The service is available to mid-market and enterprise customers in the United States, the United Kingdom, Australia and Singapore.

The launch reflects a broader push by software companies to apply AI to revenue operations, where missed calls and delayed follow-up can be measured directly in lost deals. Sales teams have long used automation for lead scoring, email sequences and customer records, but voice interactions have been harder to standardise because they require real-time responses and closer supervision.

Vitali Margolin, Head of Harmony, said the company is focusing on calls where errors can have direct commercial consequences. "We are tackling the more complex, higher-stakes calls where every wrong answer costs money and every missed opportunity risks a potential deal," he said.

He said smaller models and structured logic were intended to improve consistency in live sales conversations. "Unlike generic solutions that rely on third-party LLMs, our specialised models and structured logic translate into conversations that sound human and a response time that feels human. It's what makes the difference when the goal isn't just completing a call, but growing a business," Margolin said.

Customer example

One early customer the company cited is Bright Car Finance, a UK car finance broker regulated by the Financial Conduct Authority. The broker said it had been generating about 2,500 approved applications a month but converting only about 5% of them into finance agreements because many leads were not contacted quickly enough.

Richard Stubbs, Director, Bright Car Finance, said the company now uses Harmony to contact approved applicants immediately. "We generate around 2,500 approved applications a month but were only converting about 5% of them into finance agreements because leads went cold before a rep could reach them," he said.

He said the system qualifies about half the conversations it handles and transfers 80% of those live to advisers. "Harmony's AI agent now follows up with every approved applicant right away. It qualifies about half of the conversations it has and hands 80% of those live to our advisers, driving a 9% increase in deals closed in less than a year. It's taken the repetitive work off our team so they can focus on the conversations that really matter," Stubbs said.

For monday.com, the launch marks an expansion beyond workflow software into a more specialised sales technology segment. Harmony integrates with major CRM platforms and is aimed at organisations that want to run customer calling operations around the clock across multiple markets.

The challenge for providers in this area will be proving that AI systems can handle live commercial conversations reliably enough for regulated sectors and large sales teams. Harmony's pitch rests on tighter control over model behaviour and a narrower focus on specific sales tasks, rather than broad conversational systems.