NovaSynth by Noveum
ClaimedTest AI voice agents with synthetic users before launch
From $69/mo (free plan available)Visit WebsiteFreemiumVisit Website
Tracked since2026
The Bottom Line
- Price
- From $69/mo (free plan available). Compare plans
Key facts
- Synthetic users with goals, moods, accents, and interruptions test agents over real SIP calls and LiveKit audio
- Every call is traced and scored with 30+ voice AI metrics to catch failures before release
- Supports batch matrix runs, concurrency up to 2,000 lines, and tool virtualization for safe pre-production testing
Pros
- Catches failures in rehearsal before real customers experience them
- Realistic testing with real telephony, audio, and latency, not mocked transcripts
- Comprehensive metrics and trace capture for root cause analysis
Cons
- Requires integration setup (SDK or hooks) for custom agents
- Voice testing consumes credits (25 credits per minute), which may require paid plans for heavy usage
What is NovaSynth by Noveum?
NovaSynth is a pre-production testing platform for AI voice agents, designed to surface failures before real customers encounter them. It sends synthetic users, with personas, moods, accents, and adversarial behaviors, over real SIP phone calls (via Twilio, Plivo, or Vobiz) and LiveKit real-time audio, as well as chat. These synthetic callers can interrupt, switch languages, attempt prompt injections, and exhibit real-world chaos like background noise or frustration. Every call is captured as a full trace and scored with 30+ voice AI metrics (100+ across the platform), enabling teams to validate fixes end-to-end. NovaSynth supports batch matrix runs across personas and scenarios, concurrency up to 2,000 lines for load testing, and tool virtualization that replays reads and sandboxes writes to keep production data safe. It integrates with agent frameworks like Pipecat, LangChain/LangGraph, OpenAI and Anthropic SDKs, and custom agents via SDK or hooks.
Key Features
- Synthetic user personas with goals, moods, accents, and interruptions (e.g., frustrated repeat callers, prompt-injection attempts)
- Real telephony testing via SIP (Twilio, Plivo, Vobiz) and LiveKit real-time audio
- Batch matrix runs across personas and scenarios under a shared batch ID
- Concurrency and load testing up to 2,000 concurrent lines
- Tool virtualization: reads replayed, writes sandboxed to protect production systems
- Full trace capture and scoring with 30+ voice AI metrics per call
- Integration with Pipecat, LangChain/LangGraph, OpenAI/Anthropic SDKs, and custom agents via SDK or hooks
- Queue architecture (BullMQ, PostgreSQL, Redis) for async, parallelized runs
Pricing Plans
Free TrialPricing checked Oct 6, 2026
| Plan | Price | Details |
|---|---|---|
| Free | $0 |
+4 moreShow less
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| Pro | $69 / mo |
+5 moreShow less
|
| Growth | $99 / mo |
+5 moreShow less
|
| Max | $199 / mo |
+5 moreShow less
|
| Scale | $599 / mo |
+5 moreShow less
|
| Enterprise | Contact Sales |
+5 moreShow less
|
Is NovaSynth by Noveum worth the price?
Good value
The pricing is fair and scales reasonably, with a generous free tier (2,500 credits) and a cost-effective Pro tier at $69/mo for small teams.
Growth and Max offer decent jumps in quotas for $99 and $199, but Scale at $599/mo is pricier, justified only for high-volume users needing unlimited members and SSO. Best for startups testing voice AI, growing product teams, and enterprises with substantial testing needs.
How NovaSynth by Noveum's pricing compares
At $69/mo, billing unit not specified, NovaSynth by Noveum is mid-range of its 3 comparable direct competitors ($12 to $399/mo across the set).
Entry paid plan, monthly. Pricing checked Oct 6, 2026.
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NovaSynth by Noveum FAQ
Does NovaSynth call my live production system?
No. NovaSynth is designed for pre-production testing. It calls the agent you point it at: a test number, staging SIP endpoint, or a new agent not yet shipped. Live production evaluation is a separate post-production module that does not simulate callers.
What telephony providers does NovaSynth support for SIP calls?
NovaSynth supports SIP calls via Twilio, Plivo, and Vobiz. It also supports real-time audio over LiveKit, and chat over HTTP.
How are synthetic user personas and scenarios generated?
Personas with goals, moods, and accents are generated alongside scenarios (such as frustrated repeat callers, non-native speakers, or prompt-injection probes) systematically, not hand-authored. You can also submit your own scenarios, and the system suggests edge cases based on your agent context (prompt, PRD, workflows, docs).
What is tool virtualization and how does it protect production data?
Tool virtualization replays read operations and sandboxes write operations. This means a changed decision is exercised end-to-end, but writes never hit production systems, keeping your data safe during testing.
How are voice calls scored and what metrics are captured?
Every synthetic call is captured as a full trace and scored with 30+ voice AI metrics (100+ across the platform), including the audio itself. Metrics cover aspects like accuracy, relevance, coherence, safety, bias, and custom business rules.
Can NovaSynth test multi-agent systems or only single-agent architectures?
For single-agent architectures, you can provide the system prompt in Agent config. For multi-agent systems, you should integrate the NovaSynth SDK rather than pasting a single prompt. The platform supports multi-agent workflows via SDK integration.
What agent frameworks and SDKs does NovaSynth integrate with?
NovaSynth integrates with Pipecat, LangChain/LangGraph, OpenAI and Anthropic SDKs, and custom agents via its own SDK or light hooks around LLM calls. It also supports chat over HTTP.
How does credit consumption work for NovaSynth voice testing?
Voice agent testing costs 25 credits per minute. Text conversation testing costs 10 credits per conversation. Credits are part of a unified system that also covers eval scoring and NovaPilot analysis. Monthly plan credits reset each billing cycle; add-on credit packs never expire.
Source: noveum.ai