Alternatives to Vapi
8 Voice & Messaging tools you could use instead. Each one shares a way to connect with Vapi and overlaps on what it does. Strongest match first.
Alternatives

Pipecat
APIBuilds realtime voice and multimodal conversational agents in Python — orchestrates STT, LLM, and TTS pipelines with…
Verifiedby Daily · Voice & Messaging · 3 skills · API KeyWhy Both offer API. In common: stt, tts, real-time.

TEN Framework
API · CLIBuilds realtime conversational voice AI agents with a low-latency, multimodal framework in C, Go, and Python. Handles…
Verifiedby TEN · Voice & Messaging · 3 skills · API KeyWhy Both offer API. In common: conversational, latency, real-time.

Kapso
APIWhatsApp AI agent platform. Build and deploy conversational agents on WhatsApp Business API with no-code flows, LLM…
Verifiedby Kapso · Voice & Messaging · 5 skills · API KeyWhy Both offer API. In common: conversational, build, prompts.

Retell AI
APIBuilds, tests, deploys, and monitors natural-sounding AI voice agents with ~600ms latency for scheduling, support, and…
Verifiedby Retell AI · Voice & Messaging · API KeyWhy Both offer API. In common: phone calls, real-time, voice.

Dograh
API · MCPBuilds and self-hosts voice AI agents with a visual workflow builder, telephony, and bring-your-own-key…
Verifiedby Dograh HQ · Voice & Messaging, Orchestration · 3 skills · API KeyWhy Both offer API. In common: telephony, voice.

Bland AI
APIDeploys enterprise AI phone agents that handle inbound and outbound calls in 40+ languages with SOC2, HIPAA, and PCI…
Verifiedby Bland · Voice & Messaging · API KeyWhy Both offer API. In common: phone calls, voice.

Cartesia
APIDelivers ultra-low-latency text-to-speech and speech-to-text through the Sonic model family, with a voice-agent…
Verifiedby Cartesia · Voice & Messaging · 3 skills · API KeyWhy Both offer API. In common: latency, voice.

LiveKit Agents
API · CLIBuilds production realtime voice and video AI agents with WebRTC transport, turn detection, and STT/LLM/TTS pipelines.…
VerifiedOfficialby LiveKit · Voice & Messaging · 3 skills · API KeyWhy Both offer API. In common: real-time, voice.