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NovaSynth
NovaSynth is an audio AI product that tests a voice agent on callers people cannot stage. Tests voice agents on real calls and validates fixes automatically.
NovaSynth is an evaluation tool designed for voice and text AI agents. It tests voice agents on real calls and scores conversations using specialized voice scorers. The platform traces every run, simulates fixes, and ships validated solutions as pull requests. It integrates with frameworks like LangChain, LangGraph, LiveKit, Pipecat, and CrewAI. Engineering teams use it to debug and improve production AI agents efficiently. Test voice agents on real calls. Score conversations with voice scorers. Simulate agent behavior end-to-end.
NovaSynth at a glance
- Best for: Software engineer, Support
- Runs on: Web, API, self-hosted
- Pricing: Free plan; Pro $69/mo; Growth $99/mo; Max $199/mo; Scale $599/mo; Enterprise custom
- Released: September 2026
- Category: AI audio tool
- Website: noveum.ai
Key features
- Test voice agents on real calls
- Score conversations with voice scorers
- Simulate agent behavior end-to-end
- Ship validated fixes as pull requests
- Capture LLM calls and tool invocations
- Integrate with popular agent frameworks
Use it for
- Testing voice AI agents on live callers
- Debugging production agent failures
- Validating automated agent fixes
Alternatives to NovaSynth
- VoiceGremlin — Validate AI voice agents with real phone calls and plain English test cases.
- Synthflow — Delivers sub-100 ms latency with custom telephony and enterprise integrations.
- NPCTalk — Adds real-time cloned NPC voice servers and AI agent skills for game mods.
- Coval — Prove voice agent reliability through simulation and human-in-the-loop testing.
- Pipecat — Builds real-time voice and multimodal agents with frame-level control.
- AssemblyAI — Industry-leading speech models deliver high accuracy and low latency for voice applications.
- Patter — Connects AI agents to phone calls in four lines of code with sub-500ms latency.
- Parloa — Enterprise customer service agents built without specialists and scaled securely.
- Human or AI? — Identifies AI-generated voices in real time directly inside the browser.
- voice-design-demo — It gives AI agents a voice that adapts to context.
- Harmony AI — Deploys revenue-trained voice agents with sub-second response times.
- Qwen Audio Agent — Separates voice conversation from task execution for continuous interaction.
All NovaSynth alternatives