NovaSynth
Test voice agents with synthetic callers before real ones call
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NovaSynth sends synthetic users at your voice agents over real SIP phone calls and LiveKit audio. Each synthetic caller has a persona — mood, accent, intent, interruption patterns — and a scenario that simulates the chaos of real phone support: background noise, network drops, language switches, and escalating frustration.
The platform scores every call across 30+ voice-specific metrics and 100+ transcript scorers, capturing the full audio trace so failures surface in rehearsal. NovaPilot then recommends fixes and backtests them against the original failing calls before you ship.
NovaSynth works with Twilio, Plivo, LiveKit, Pipecat, and custom agents via SDK. It is pre-production by design — your test calls never touch your live system.
AI-assisted draft, human-reviewed before publishing — see how we choose & review tools.
Why we picked it
Voice agent testing has been stuck with happy-path scripts and hope. NovaSynth's synthetic callers bring the chaos of real phone support — accents, interruptions, bad connections — into pre-production, and the 30+ voice metrics catch audio-level failures that transcript-only evals miss entirely.
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