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Alternatives · Voice Agents

CyberVerse alternatives

Looking for an alternative to CyberVerse? Below are the voice agents in our index that do a similar job — open-source options are ranked by real maintained adoption (GitHub stars and recent commit activity), never by sponsorship. CyberVerse is open source, so the list below includes both other self-hostable projects and commercial products.

28 alternatives · all voice agents · how we rank

The product you're replacing

CyberVersePlatformVoice Agents

Self hosted, real-time digital human agent platform. Build voice-first AI agents with WebRTC, persona memory, tools, RAG, and optional digi…

Open source · 1.4k stars · Python · GPL-3.0 · updated Jul 2026

Visit CyberVerse →Full CyberVerse record

Commercial alternatives to CyberVerse

Listed alphabetically — GitHub stars don't measure commercial adoption.

Bland AIPlatformEnterprise platform for AI phone calls that sound human.Paid productElevenLabs AgentsPlatformConversational voice agents powered by ElevenLabs' leading speech models.FreemiumRetell AIPlatformBuild production-ready AI phone agents with ultra-low latency.Paid productSynthflowPlatformNo-code AI voice agents for inbound and outbound calls.Paid productVapiPlatformDeveloper platform for building, testing, and deploying voice AI agents.Paid product

Open-source alternatives to CyberVerse

Ranked by maintained adoption — self-hostable and free to run.

01xiaozhi-esp32-serverInfrastructure本项目为xiaozhi-esp32提供后端服务，帮助您快速搭建ESP32设备控制服务器。Backend service for xiaozhi-esp32, helps you quickly build an ESP32 device control server.JavaScript · 10.0k stars · MIT · Jul 202602ten-vadSDK / libraryVoice Activity Detector (VAD): low-latency, high-performance and lightweightC · 2.2k stars · Feb 202603bailingAgent百聆 是一个类似GPT-4o的语音对话机器人，通过ASR+LLM+TTS实现，集成DeepSeek R1等优秀大模型，接入openClaw，真正的个人语音助手，时延低至800ms，Mac等低配置也可运行，支持打断Python · 1.7k stars · MIT · Apr 202604RCLIAgentTalk to your Mac, query your docs, no cloud required. On-device voice AI + RAGC++ · 1.5k stars · MIT · Mar 202605PatterSDK / libraryOpen-source voice-AI SDK. The Vapi/Retell alternative for builders who want to own the stack. Give your AI agent a phone number in 4 lines…Python · 919 stars · MIT · Jul 202606rustpbxInfrastructureA PBX written by rustRust · 654 stars · MIT · Jul 202607echokit_serverPlatformOpen Source Voice Agent PlatformRust · 588 stars · GPL-3.0 · Feb 202608StarmoonFrameworkA conversational, AI device + software framework for companionship, entertainment, education, healthcare, IoT applications, and DIY robotic…TypeScript · 549 stars · GPL-3.0 · Mar 202609JARVISAgentYour own personal voice assistant: Voice to Text to LLM to Speech, displayed in a web interfacePython · 524 stars · GPL-3.0 · Jun 202410deepgram-python-sdkSDK / libraryOfficial Python SDK for Deepgram.Python · 447 stars · MIT · Jul 202611bolnaAgentEnd-to-end platform for building voice first multimodal agentsPython · 433 stars · MIT · Oct 202412sutandoAgentMy AI Stand. Realtime by day, rewriting itself by night. Summon my AI superpower.Python · 353 stars · MIT · Jul 2026
Signal inventory open — put your agent in front of people choosing oneReserve a signal slot →
13LLMVoXSDK / libraryLLMVoX: Autoregressive Streaming Text-to-Speech Model for Any LLMPython · 308 stars · May 202514ai-avatar-systemAgentAI Avatar / digital human platform — upload a photo, clone a voice, talk to any face in real time with lip-sync video. Open-source, self…Python · 295 stars · MIT · Jun 202615agent-second-brainAgentAn always-on second brain you talk to. Voice notes in Telegram → typed, linked knowledge in your Obsidian vault. Runs 24/7 on the Claude su…Python · 289 stars · MIT · Jun 202616deepgram-js-sdkSDK / libraryOfficial JavaScript SDK for Deepgram.TypeScript · 266 stars · MIT · Jul 202617xybridSDK / libraryBuild apps powered by on-device AIRust · 264 stars · Apache-2.0 · Jul 202618M.I.L.E.SAgentM.I.L.E.S, a GPT-4-Turbo voice assistant, self-adapts its prompts and AI model, can play any Spotify song, adjusts system and Spotify volum…Python · 233 stars · MIT · Dec 202419gdansk-aiAgentFull stack voice chatbotTypeScript · 199 stars · GPL-2.0 · Oct 202420active-callAgentA SIP/WebRTC voice agentRust · 173 stars · Jul 202621AI-Voice-AgentAgentSelf-hosted AI voice agentPython · 152 stars · MIT · Jun 202622axiom-voice-agentAgentRun a <400ms latency Voice Agent on just 4GB VRAM. Fully offline, no API keys required. Optimized for GTX 1650 and edge robotics with zero-…Python · 136 stars · Apache-2.0 · May 202623BentoVoiceAgentAgentBuild Phone Calling Voice Agent fully powered by open source models.Python · 124 stars · Apr 2025

Frequently asked

What is the best alternative to CyberVerse?
It depends on whether you'd rather self-host or buy a managed product. xiaozhi-esp32-server is the most widely-adopted open-source alternative (10.0k GitHub stars); Bland AI is one of the commercial options. Compare the full list above on adoption, license, and pricing.
Is there a free or open-source alternative to CyberVerse?
Yes. xiaozhi-esp32-server, ten-vad, and bailing are open-source voice agents you can self-host for free — you still pay for the infrastructure you run them on and any model or API usage. See the ranked open-source list above.
How are these CyberVerse alternatives ranked?
Every product in the voice agents category is a candidate. Open-source alternatives are ranked by maintained adoption — GitHub stars plus recent commit activity — so you see what's genuinely used, not abandoned. Commercial products are listed separately and alphabetically, because stars don't measure commercial adoption. Sponsored placement is always labeled and never affects the ranking.