Looking for a Twilio alternative?
Sempera is a complete voice AI agent platform. Twilio provides telephony infrastructure for developers to build on.
In production at
Sempera and Twilio are different product categories. Sempera is a complete voice AI agent platform: Sempera's AI handles phone calls from start to finish. Twilio is programmable telephony infrastructure: developers build their own AI and conversation logic on top. Sempera is the finished product. Twilio is a building block.
What teams run into with Twilio
Twilio gives you primitives, not an agent
Programmable Voice and AutoPilot ship building blocks. Speech recognition, LLM orchestration, dialogue state, and integration work still land on your engineering team.
Costs are itemised across many SKUs
A live call accumulates charges across Voice, Studio, AutoPilot, Functions, and any third-party AI you wire in. Total cost is hard to forecast before scale.
AI quality depends on what you bolt on
Twilio is telephony-first. Conversational quality, interruption handling, and latency are determined by the AI stack you assemble on top.
Why teams switch to Sempera
Complete product, not a toolkit
Sempera is voice AI that works out of the box. Twilio requires building the AI, conversation logic, and integrations from scratch.
No engineering team required
Build agents with Norm in plain English. Twilio requires a dedicated engineering team.
One vendor, one bill
$0.11 to $0.14/min for the full voice AI stack. With Twilio, you pay for telephony plus whatever AI services you build on top.
Sempera vs Twilio, line by line
| Feature | Sempera | Twilio |
|---|---|---|
| What it does | AI agents handle phone calls | Telephony infrastructure for developers |
| AI included | Yes (proprietary full pipeline) | No (developers add their own) |
| Time to production | 30 days (no coding for basic agents) | Months (requires dev team) |
| Required skill | Norm: none. API: standard dev skills | Full-stack dev team required |
| Pricing | $0.11 to $0.14/min all-inclusive | Per-minute telephony + separate AI costs |
| Maintenance | Sempera manages the platform | Customer manages everything |
See the full breakdown: Sempera vs Twilio.
Twilio alternative FAQ
Sempera replaces the need to build voice AI on top of Twilio. If you're using Twilio to build AI phone agents, Sempera provides that as a complete platform. If you need programmable telephony for non-AI use cases (SMS, video, authentication), Twilio remains relevant.
