Looking for a Decagon alternative?
Decagon focuses on AI customer-service chat. Sempera is a voice-first platform built for high-volume phone workflows in regulated industries.
In production at






Sempera is a Decagon alternative for teams whose customer volume is on the phone. Sempera runs proprietary speech, LLM, and TTS infrastructure with sub-second latency, ships SOC 2 Type II + HIPAA + PCI DSS out of the box, and prices at $0.11 to $0.14 per minute all-inclusive. Decagon optimises for AI customer-service chat and deflection workflows.
What teams run into with Decagon
Chat-first vendor on a voice problem
Decagon optimises for AI customer-service chat. Teams whose customer volume lives on the phone are routing a phone-shaped problem through a chat-shaped product.
Voice depth follows the chat surface
Sub-second turn-taking, interruption recovery, and natural prosody are engineering investments that compound over time. A chat-first vendor catches up slowly.
Phone-native compliance gaps
Call recording disclosures, FCC-compliant outbound, PCI on the call, and HIPAA over voice are commitments a chat platform makes one at a time.
Why teams switch to Sempera
Phone-native, not chat-first
Sempera is built for inbound and outbound calls at scale. Decagon leads with chat and ticketing. If most of your customer load is on the phone, Sempera is the surface that matches.
Licensed platform
Speech recognition, LLM, TTS, and telephony are all owned by Sempera. Customer data never passes through third-party AI providers.
Compliance for regulated industries
SOC 2 Type II, HIPAA with BAA, and PCI DSS out of the box. Self-hosted deployments available for stricter data-residency needs.
Transparent pricing
Sempera is $0.11 to $0.14 per minute, all-inclusive. No separate bills for LLM, TTS, or telephony.
Sempera vs Decagon, line by line
| Feature | Sempera | Decagon |
|---|---|---|
| Primary surface | Voice (inbound and outbound) | AI chat and customer-service automation |
| Infrastructure | Proprietary full-stack | AI agent layer over third-party models |
| Outbound campaigns | Native (renewals, FNOL, qualification) | Chat-first; voice outbound varies |
| Compliance | SOC 2 Type II, HIPAA with BAA, PCI DSS | Verify per-customer |
| On-premise | Yes (Cloud, VPC, On-Premise) | Verify availability |
| Pricing | $0.11 to $0.14/min all-inclusive | Custom (undisclosed) |
Decagon alternative FAQ
Yes, for teams whose volume is on the phone. Sempera was built for inbound and outbound calling with sub-second latency, proprietary models that keep customer data inside Sempera's stack, and compliance certifications including SOC 2 Type II, HIPAA with BAA, and PCI DSS.
Sempera owns its models: speech recognition, LLM, and TTS. Decagon is an AI agent layer that orchestrates third-party models. The difference matters for data sovereignty, latency, and compliance reviews in regulated industries.
Sempera is $0.11 to $0.14 per minute all-inclusive. Decagon pricing is custom and undisclosed. For procurement teams that need a line-item budget before signing, Sempera is easier to scope.