vspec vs Hamming
Both tools test AI voice agents. One is self-serve, transparent, and ships in 2 minutes. The other requires a sales call.
How they stack up.
| Feature | vspec | Hamming |
|---|---|---|
| Works with any phone number | ✓ Yes — point at any number | Platform-specific integrations |
| Self-serve signup | ✓ Instant | ✗ Demo / sales call required |
| Free tier | ✓ 5 free credits on signup | ✗ Not available |
| Transparent pricing | ✓ From €0 — listed publicly | ✗ Enterprise pricing, contact sales |
| E2E voice call simulation | ✓ | ✓ |
| CI/CD webhook integration | ✓ Solo plan+ | ✓ |
| Custom test scenarios | ✓ Define via Web UI | ✓ AI auto-generated |
| Call transcripts & results | ✓ | ✓ |
| Inbound (webhook-triggered) runs | ✓ Solo plan+ | ✓ |
| Load testing (1000+ concurrent calls) | ✗ Not a focus | ✓ |
| Production monitoring | ✗ | ✓ |
| 50+ built-in metrics | Scenario-based pass/fail | ✓ |
| Setup time | Under 2 minutes | 10 minutes (after sales call) |
| Target audience | Solo devs, small teams, indie builders | Enterprise QA teams, healthcare, finance |
Hamming is a powerful enterprise platform — but it's built for large QA teams with compliance requirements, enterprise budgets, and a sales process. If you're an indie developer, a startup, or anyone who wants to start testing today without a sales call, vspec gives you everything you need to validate your AI voice agent's behavior, instantly.
Built for builders
who move fast.
No sales process
Sign up, get 5 free credits, and run your first test — all without talking to anyone. Hamming requires a demo call before you can start.
Platform-agnostic
vspec works with any AI voice agent that has a phone number. Vapi, Retell, Bland, ElevenLabs, or fully custom. No platform lock-in.
Honest pricing
€0 to start, €19/month for the Solo plan. Every tier is listed publicly. Hamming's pricing is enterprise-only and requires a quote.
Ready to ditch the
sales call?
Free tier. No credit card. First test in under 2 minutes.
Start testing for free →