Voice & Messaging
AI agents for voice calls, WhatsApp, SMS, and messaging channel automation. These tools handle real-time speech-to-text, turn-taking, TTS, and multi-channel routing — enabling phone agents that sound human and messaging bots that feel native. Critical for customer-facing voice and chat automation.
AssemblyAI
Speech recognition API with real-time and batch transcription plus audio intelligence models for summarization, topic d…
Bland AI
Deploys enterprise AI phone agents that handle inbound and outbound calls in 40+ languages with SOC2, HIPAA, and PCI DS…
Deepgram
Speech-to-text and voice AI API with real-time streaming transcription, speaker diarization, and text-to-speech for voi…
Dograh
Builds and self-hosts voice AI agents with a visual workflow builder, telephony, and bring-your-own-key speech-to-speec…
Kapso
WhatsApp AI agent platform. Build and deploy conversational agents on WhatsApp Business API with no-code flows, LLM int…
LiveKit Agents
Builds production realtime voice and video AI agents with WebRTC transport, turn detection, and STT/LLM/TTS pipelines.…
Pipecat
Builds realtime voice and multimodal conversational agents in Python — orchestrates STT, LLM, and TTS pipelines with in…
Retell AI
Builds, tests, deploys, and monitors natural-sounding AI voice agents with ~600ms latency for scheduling, support, and…
Spectrum
npm SDK connecting AI agents to iMessage, WhatsApp, Telegram, Slack, Discord, and Instagram via a single unified API —…
Speko
Unified routing API for voice models across providers, giving voice agents one interface for speech-to-text, text-to-sp…
Telegram MCP
MCP server giving AI agents programmatic access to Telegram — send messages, manage chats, interact with bots, and moni…
TEN Framework
Builds realtime conversational voice AI agents with a low-latency, multimodal framework in C, Go, and Python. Handles a…
Vapi
Voice AI platform for building production phone agents. Handles real-time STT, TTS, turn-taking, and LLM orchestration.…