vspec vs Cekura
Cekura is a YC-backed infrastructure platform for enterprise voice AI teams. vspec is for everyone else — the solo dev, the startup, the team that wants to test today.
What each tool does.
| Feature | vspec | Cekura |
|---|---|---|
| Works with any phone number | ✓ Just point at a number | Platform integrations (Vapi, Retell, LiveKit, Cisco, Five9) |
| Free tier | ✓ 5 credits on signup | ✓ 7-day trial, 300 credits, no credit card |
| Transparent pricing | ✓ From €0, listed publicly | ✓ From $30/mo (Developer), enterprise custom |
| Self-serve signup | ✓ Instant | ✓ 7-day free trial, no credit card |
| E2E voice call simulation | ✓ | ✓ Thousands of pre-built test cases |
| Custom test scenarios | ✓ Define via Web UI | ✓ Persona-based simulation |
| CI/CD integration | ✓ API webhooks (Solo plan+) | ✓ CI/CD pipeline support |
| Production monitoring | ✗ | ✓ Real-time conversation monitoring |
| Red-teaming / adversarial testing | Manual scenario definition | ✓ Bias, toxicity, jailbreak testing |
| Infrastructure stress testing | ✗ | ✓ 20+ curated infra stress tests |
| Hallucination detection | Via scenario pass/fail | ✓ LLM-based evaluators |
| Legacy platform support | Any phone number | ✓ Cisco, Five9, contact centers |
| Setup complexity | Minimal — 2 minutes | Moderate — platform integration required |
| Target audience | Solo devs, startups, small teams | Enterprise, healthcare, finance, contact centers |
Cekura is serious infrastructure — YC-backed, used by enterprise contact centers, with deep platform integrations and production observability. It's genuinely impressive, and if you're a healthcare or financial services team at scale, it may be the right fit. But if you're building an AI voice agent and want to validate your scenarios right now, without a sales process and without enterprise pricing, vspec is the pragmatic choice.
Powerful enough for
what you actually need.
No platform lock-in
vspec works with any AI voice agent that has a phone number. Cekura requires specific platform integrations. If you're using a custom stack, vspec just works.
Zero setup overhead
No infrastructure engineers required. Sign up, add your phone number, define your scenarios, hit run. No SDKs, no platform-specific config, no onboarding calls.
Priced for indie builders
Start free with 5 credits. Go to €19/month when you're ready. Cekura is enterprise software with enterprise pricing — not built for a solo developer shipping fast.
Skip the enterprise
sales process.
Free tier. No credit card. Works with any AI phone agent in under 2 minutes.
Start testing for free →