Voice AI agents
for developers
Build sophisticated AI voice agents with sub-second response times. Natural conversations over phone or web.
How It Works
Three simple steps to enable natural AI voice conversations
01
Speak Naturally
Your user initiates a voice conversation through phone or web
02
AI Orchestration
Zepi routes audio through best-in-class STT, LLM, and TTS engines
03
Instant Response
Get human-like replies in under 500ms with intelligent context awareness
Built for developers, designed for scale
Everything you need to build sophisticated voice AI applications with minimal code.
Lightning Fast
Sub-second response times with optimized voice streaming. Natural conversations without awkward pauses.
AI Orchestration
Seamlessly connects STT, LLM, and TTS engines into one unified voice experience.
Multi-Channel
Deploy on phone lines, web apps, or mobile with a single API integration.
Secure & Reliable
End-to-end encryption, SOC 2 compliance, and enterprise-grade infrastructure.
Flexible Workflows
Build custom conversation flows with conditional logic and dynamic responses.
Provider Agnostic
Choose from multiple STT, LLM, and TTS providers or use your own models.
One API. Infinite possibilities.
Zepiai connects the best AI providers so you don't have to. Switch models instantly without changing code.
Speech-to-Text
- Deepgram
- AssemblyAI
- Google STT
- Whisper
Language Models
- GPT-4
- Claude
- Gemini
- Llama
Text-to-Speech
- ElevenLabs
- PlayHT
- Google TTS
- Azure
Your Code
- Custom Logic
- APIs
- Databases
- Integrations
Simple, transparent pricing
Start free, scale as you grow. No hidden fees or surprises.
Developer
Perfect for testing and development
Free
- 1,000 minutes/month
- All voice models
- Phone & Web support
- Community support
- API access
Most Popular
Startup
For growing businesses
$99/month
- 10,000 minutes/month
- Priority support
- Custom voice models
- Advanced analytics
- Webhook integrations
- 99.9% uptime SLA
Enterprise
For large scale deployments
Custom
- Unlimited minutes
- Dedicated support
- Custom integrations
- On-premise option
- SLA guarantees
- Training & onboarding
Ready to build with ZEPI?
Join developers and businesses building the next generation of voice AI experiences.