More AI tools →74 free dev tools →
NovaSynth is a self-service platform for automated voice and text agent testing with realistic AI callers.
- for
- Teams building voice or chat agents that need end-to-end functional and load testing.
- pricing
- freemium
Key features
- Synthetic callers with personas — Create AI callers with goals, moods, accents and interruptions to mimic real users.
- Real SIP and LiveKit calls — Dial agents over Twilio, Plivo, Vobiz SIP or LiveKit audio for true latency and audio.
- Batch matrix runs — Run combinatorial persona × scenario matrices in a single batch for coverage.
- Concurrency & load testing — Scale up to 2,000 concurrent lines to measure agent capacity.
- 30+ voice metrics scoring — Capture each call and score it with a suite of voice AI quality metrics.
- Queue architecture — Async queue built on BullMQ, PostgreSQL and Redis enables parallel runs at scale.
Use cases
- Validate agent handling of frustrated repeat callers and escalation scenarios.
- Test turn-taking and recovery when callers interrupt or change intent mid-call.
- Run load tests to determine maximum concurrent call capacity of a voice bot.
- Assess safety by simulating prompt-injection or adversarial queries.
- Generate systematic edge-case coverage across languages, accents and background noise.
NovaSynth by Noveum pricing
- Free$02,500 credits/month · ~25 min voice testing · No credit card required
- Pro$69/mo/month10K credits · ~100 min voice testing · 20 GB storage
- Growth$99/mo/month25K credits · ~250 min voice testing · 50 GB storage
- Max$199/mo/month50K credits · ~500 min voice testing · 100 GB storage
- Scale$599/mo/month200K credits · ~2,000 min voice testing · 500 GB storage
NovaSynth by Noveum vs alternatives
Postman | Jest | Qodo | |||
|---|---|---|---|---|---|
| Best for | Synthetic voice agent testing with real telephony | API design and testing | Web UI testing | JavaScript unit tests | AI-assisted code review |
| Pricing | Freemium | Subscription | Free | Free | Subscription |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Oct 2031 | — | — | — | — |
- NovaSynth by Noveum vs Postman: Postman focuses on API testing, not voice call simulation with synthetic callers.
- NovaSynth by Noveum vs Cypress: Cypress provides browser end-to-end testing, not telephony or voice agent testing.
- NovaSynth by Noveum vs Jest: Jest is a unit testing framework for JavaScript, unrelated to voice agent load testing.
- NovaSynth by Noveum vs Qodo: Qodo generates AI code reviews and tests, but does not simulate real-time voice interactions.
NovaSynth by Noveum FAQ
Does NovaSynth call my live production system?+
No, it only calls the test endpoint you configure; production evaluation is a separate module.
How are credits consumed?+
Voice calls cost 100 credits per minute, text conversations 12 credits each, and other scorers have their own rates.
What happens when I run out of credits?+
Work stops with a quota error; you can buy an add-on pack or upgrade the plan.
Is NovaSynth available on the Free plan?+
Yes, the Free plan includes NovaSynth testing, limited by the 2,500 monthly credits.
Can I upgrade or downgrade plans at any time?+
Upgrades take effect immediately; downgrades apply at the next billing cycle.
Do credits roll over month to month?+
Monthly credits reset each billing cycle; add-on packs never expire and stack with your plan.
Summarized by DevHunt from noveum.ai · Oct 27, 2026. Details may change; check the official site.
Postman
Jest
Qodo





