Vapi

Vapi offers a scalable platform to create voice AI agents via a fully API-native stack. Developers can bring their own transcription, LLM, and TTS models or use Vapi’s hosted options, while leveraging 1000s of configurations, tool integrations, and 40+ apps. The system emphasizes automated testing to reduce hallucinations, supports A/B experiments, and enables forward-deployed enterprise deployments with low-latency, SOC2/HIPAA/PCI-compliant security. Customers range from startups to Fortune 500 companies deploying voice agents across telephony and websites, with millions of calls processed and a growing developer community.