NovaSynth by Noveum

NovaSynth by Noveum is a testing product for voice and chat agents, released on 17 September 2026. It builds synthetic users, each with goals, moods, accents and behaviours, and runs them through the agent under test. The calls are real telephony rather than mocked transcripts, so a failure shows up the way a customer would meet it.

Features

• Synthetic callers: generated users such as a frustrated repeat caller, someone who talks over the agent, or a person who switches language mid-sentence.
• Live telephony: calls agents by SIP through Twilio, Plivo or Vobiz, and streams audio over LiveKit.
• Scenario matrix: runs a full set of personas against a set of scenarios under one batch.
• Safe replay: replays read calls to the agent's tools and sandboxes writes, so production systems are not touched.
• Scoring: records each call as a trace and scores it, including the audio, against more than 30 voice metrics.

Clients

Teams building voice or chat agents that handle calls or requests from customers, including those who want load testing with up to 2,000 concurrent lines.

Key facts

• Frameworks: Pipecat, LangChain, LangGraph, OpenAI and Anthropic SDK code, and HTTP chat.
• Pricing model: billed per organisation on a shared credit system.
• Release: 17 September 2026.