AI Agents & Automation (10)

10 free real-time AI voice agent platforms and 0 more — pricing tier and real capabilities on every entry. No ads, no sponsored placement.

AllGeneral Autonomous AgentsWorkflow AutomationAgent Frameworks (Developers)Real-Time Voice AgentsBrowser & Computer-Use AgentsMCP EcosystemAgent Memory & RAG-as-a-Service

Vapi

Real-Time Voice Agents
freemium
  • Orchestrates STT/LLM/TTS providers of choice into one low-latency voice-agent pipeline
  • Usage-based per-minute pricing with free trial minutes included
  • SOC 2/HIPAA/PCI compliance add-ons for regulated call-center deployments
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Retell AI

Real-Time Voice Agents
freemium
  • Free starting credit with no contract required
  • Supports swapping GPT, Claude or Gemini as the reasoning layer per agent
  • Batch calling campaigns plus live AI-to-human call transfer built in
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Bland AI

Real-Time Voice Agents
freemium
  • All-in-one per-minute pricing bundles LLM+STT+TTS with no separate token pass-through charges
  • Free start with call credits plus an inbound number included
  • Tiered platform fees (Build/Scale) unlock lower per-minute rates for high volume
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LiveKit Agents

Real-Time Voice Agents
free
  • Apache-2.0 open-source framework, fully self-hostable on your own servers
  • Native WebRTC client support across web/mobile/telephony out of the box
  • Native Model Context Protocol (MCP) support for tool-using voice agents
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Pipecat

Real-Time Voice Agents
free
  • BSD-2-Clause open-source Python framework for real-time voice/multimodal agents
  • Supports distributed multi-agent systems with handoffs over a shared bus
  • Maintained by Daily with an active plugin ecosystem for STT/LLM/TTS providers
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Ultravox

Real-Time Voice Agents
freemium
  • Speech-native processing skips the STT-to-text bottleneck, preserving tone/cadence/pitch
  • Free tier: 5¢/min including TTS for up to 5 concurrent calls
  • Open-weight models (fixie-ai) published on Hugging Face for research use
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Bolna

Real-Time Voice Agents
freeNew
  • Open-source framework for phone voice agents, from an India-based team
  • Connects to telephony, STT, LLM and TTS providers of your choice
  • Supports Indian languages
  • Self-host free; hosted platform is pay-as-you-go
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Kyutai Unmute

Real-Time Voice Agents
freeNew
  • Wraps any text LLM with Kyutai's streaming speech-to-text and text-to-speech for voice conversation
  • Open-source code and weights that can be self-hosted
  • Low-latency interruptible conversation
  • Free demo available online
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TEN Framework

Real-Time Voice Agents
freeNew
  • Open-source framework for real-time conversational voice and multimodal agents
  • Modular graph of extensions in Python, Go, C++ and Node
  • Ships a playground and a VAD and turn-detection model
  • Free to self-host under an open license
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XiaoZhi AI

Real-Time Voice Agents
freeNew
  • Open-source ESP32 voice chatbot with wake word, Opus streaming and a display
  • Free official server lets personal users try a Qwen real-time model after registering
  • Device-side and cloud MCP for controlling IoT gadgets
  • MIT licensed firmware supporting many ESP32 chips
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Real-Time Voice Agents — straight answers

What are the best free real-time AI voice agent platforms?

Flocci AI Tools lists 10 real-time AI voice agent platforms, ordered free tiers first: Bolna, Kyutai Unmute, LiveKit Agents, Pipecat and TEN Framework. All of them are free or have a free tier. Every entry states what it uniquely does, not a score.

Are there completely free real-time AI voice agent platforms?

Yes — 6 of these are marked fully free with no paid plan attached: Bolna, Kyutai Unmute, LiveKit Agents, Pipecat and TEN Framework. The rest are freemium, trial or paid, and each row states which.

What should I look for in real-time AI voice agent platforms?

Start with what you need to do: build a phone agent that listens and answers live. Then check the pricing tier, because "free" here means no paid plan at all while "freemium" means a free tier under paid plans. Every tool on this page lists both.

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Head-to-head comparisons

Bolna vs Kyutai UnmuteBolna vs LiveKit AgentsBolna vs PipecatBolna vs TEN FrameworkBolna vs XiaoZhi AIKyutai Unmute vs LiveKit AgentsKyutai Unmute vs PipecatKyutai Unmute vs TEN Framework

Free alternatives

Vapi alternativesRetell AI alternativesBland AI alternativesLiveKit Agents alternativesPipecat alternativesUltravox alternativesBolna alternativesKyutai Unmute alternatives

Looking for a ranked shortlist instead? See the best free real-time AI voice agent platforms.