Best Alternatives to Synthflow AI

Bland AI

API-first platform for building AI phone agents that make and receive calls at scale. Sub-500ms latency, voice cloning, and branching conversation flows for sales, support, and scheduling.

From $0.07/min

Kore.ai

Enterprise conversational AI platform for building intelligent virtual assistants with voice, chat, and process automation capabilities.

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LiveKit Agents

Real-time media infrastructure platform with an integrated agent framework for building voice and video AI assistants that can participate in live conversations. Enables developers to create AI agents that can see, hear, and speak in real-time video calls, with support for spatial audio, screen sharing, and multi-participant interactions.

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Murf AI

AI voice generation platform offering 200+ ultra-realistic text-to-speech voices in 35+ languages for voiceovers, audiobooks, and presentations.

Retell AI

Conversational voice infrastructure for call center automation. - Enhanced AI-powered platform providing advanced capabilities for modern development and business workflows. Features comprehensive tooling, integrations, and scalable architecture designed for professional teams and enterprise environments.

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Thoughtly

AI phone agent platform for building human-like voice agents that handle inbound and outbound calls for businesses.

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Vapi

Developer platform for real-time voice AI agents.

From Free