Looking for a Vapi alternative?
Sempera is a full-stack enterprise platform with proprietary models. Vapi is a developer-focused orchestration layer connecting third-party AI providers.
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Sempera and Vapi are voice AI platforms with different architectures and target markets. Sempera is a full-stack enterprise platform with proprietary models, SOC 2 Type II, HIPAA, and PCI DSS compliance, built for regulated industries. Vapi is a developer-focused orchestration platform that connects third-party AI providers, offering flexibility for developers who want to choose their own LLM, TTS, and telephony providers.
What teams run into with Vapi
You assemble the stack
Vapi is an orchestration layer. Choosing LLM, TTS, and telephony providers, managing API keys, and tuning inter-service latency is on your team, not the vendor.
No on-premise path
Vapi is cloud-only. Regulated environments that require self-hosted models or on-premise deployment fall outside the supported topology.
Compliance moves with your provider choices
SOC 2, HIPAA, and PCI DSS depend on the LLM and TTS vendors you select. Every provider swap reopens the audit conversation.
Why teams switch to Sempera
No third-party data exposure
Sempera's proprietary models mean customer data never leaves Sempera's infrastructure. With Vapi, data flows through whichever providers you select.
All-inclusive pricing
$0.11 to $0.14/min covers everything. With Vapi, you pay Vapi plus separate bills from your LLM, TTS, and telephony providers.
Enterprise compliance
SOC 2 Type II, HIPAA, PCI DSS out of the box. Vapi's compliance depends on your chosen providers.
No assembly required
Sempera is a complete platform. Vapi requires choosing and configuring multiple providers, managing API keys, and handling inter-service latency.
Sempera vs Vapi, line by line
| Feature | Sempera | Vapi |
|---|---|---|
| Infrastructure | Proprietary full-stack | Orchestration layer (third-party APIs) |
| Target user | Enterprise CX teams, contact centers | Developers, technical builders |
| Data sovereignty | No third-party data exposure | Data flows through chosen providers |
| Compliance | SOC 2 Type II, HIPAA, PCI DSS, GDPR | Verify current certifications |
| On-premise | Yes | No (cloud only) |
| LLM flexibility | Sempera's proprietary models | Choose any LLM provider |
| TTS flexibility | Sempera's built-in TTS | Choose any TTS provider |
| Pricing | $0.11 to $0.14/min all-inclusive | Per-minute + provider costs |
| No-code builder | Norm + Pathways | API-first, minimal no-code |
| Latency | Under 400ms end-to-end | Varies by provider chain |
See the full breakdown: Sempera vs Vapi.
Vapi alternative FAQ
For enterprise contact centers in regulated industries, Sempera offers proprietary infrastructure (no third-party data exposure), compliance certifications (SOC 2, HIPAA, PCI DSS), on-premise deployment, dedicated FDE support, and all-inclusive pricing. Vapi is designed for developers who want to build custom voice AI applications with flexible provider choices.
Sempera runs on proprietary models optimized for phone conversations. This is by design: controlling the LLM layer enables data sovereignty and latency guarantees. If choosing your own LLM provider is a priority, Vapi may be a better fit. If data sovereignty and compliance are priorities, Sempera's proprietary approach is the advantage.
Vapi's per-minute rate may appear lower, but total cost includes separate charges for your chosen LLM, TTS, and telephony providers. At enterprise scale, these component costs add up. Sempera's $0.11 to $0.14/min is all-inclusive with no additional provider bills.
