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AI · alternatives · 2026

24 alternatives to RTVI-AI Open Standard

Make an AI voice chat app in 21 lines of JavaScript

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. RTVI-AI Open Standard launched in 2024; newer entries below may have overtaken it.

  1. 1

    The open-source framework for real-time AI voice

    2025 · videosdk.live · its alternatives →

  2. 2
    Intervo▲382

    The open-source platform for conversational AI

    2025 · intervo.ai · its alternatives →

  3. 3

    Have a natural, spoken conversation with AI! Contribute to KoljaB/RealtimeVoiceChat development by creating an account on GitHub.

    2025 · github.com · its alternatives →

  4. 4

    Luke from ElevenLabs here. We just released Scribe Realtime v2, our new real-time Speech to Text model. We rebuilt it from the ground up around a new architecture that uses predictive transcription – it anticipates the next likely word before it’s spoken. That makes it both fast (around 150 ms latency) and highly accurate. Scribe v2 Realtime outperforms every low latency transcription model across 30 commonly used EU and Asian languages – 93.5% accuracy, compared to Gemini 2.5 Flash (91.4%), GPT-4o MiniTranscribe (90.7%), and Deepgram Nova 3 (85%). It supports 90+ languages including…

    2025 · elevenlabs.io · its alternatives →

  5. 5
    Play AI▲447

    The voice interface of AI

    2024 · its alternatives →

  6. 6

    Build voice-to-voice AI agents with any LLM with Open Source

    2024 · daily.co · its alternatives →

  7. 7
    Ztalk.ai▲450

    Real-time voice translation

    2025 · ztalk.ai · its alternatives →

  8. 8

    Build Powerful Voice Agents

    2025 · openai.com · its alternatives →

  9. 9

    Voxos is an open-source desktop voice assistant that aims to put Clippy to shame while supporting new desktop workflows powered by LLMs. Tired of copy and pasting ChatGPT responses between your web browser and IDE? Does your copilot not quite do what you need it to do? I invite you to give Voxos a try and maybe even become a contributor!

    2024 · gitlab.com · its alternatives →

  10. 10
    api.ai▲301

    Build your own Siri. Speech interface for apps and devices.

    2014 · its alternatives →

  11. 11
    Voxtral▲201

    Frontier open source speech understanding models

    2025 · mistral.ai · its alternatives →

  12. 12

    Add AI Voice & Chat Agents directly to your website.

    Apr 2026 · smallest.ai · its alternatives →

  13. 13

    Premium AI voice quality without the premium price tag.

    2025 · async.com · its alternatives →

  14. 14
    Wavel AI▲289

    Most realistic and natural AI voiceover & dubbing for videos

    2023 · wavel.ai · its alternatives →

  15. 15

    Tighter instruction adherence in speech agents

    Feb 2026 · developers.openai.com · its alternatives →

  16. 16

    Hi HN! Last year the project I launched here got a lot of good feedback on creating speech to speech AI on the ESP32. Recently I revamped the whole stack, iterated on that feedback and made our project fully open-source—all of the client, hardware, firmware code. This Github repo turns an ESP32-S3 into a realtime AI speech companion using the OpenAI Realtime API, Arduino WebSockets, Deno Edge Functions, and a full-stack web interface. You can talk to your own custom AI character, and it responds instantly. I couldn't find a resource that helped set up a reliable, secure websocket (WSS) AI…

    2025 · github.com · its alternatives →

  17. 17

    WhisperFusion builds upon the capabilities of open source tools WhisperLive and WhisperSpeech to provide a seamless conversations with an AI chatbot.

    2024 · github.com · its alternatives →

  18. 18

    Hey HN, we've been working with OpenAI for the past few months on the new Realtime API. The goal is to give everyone access to the same stack that underpins Advanced Voice in the ChatGPT app. Under the hood it works like this: - A user's speech is captured by a LiveKit client SDK in the ChatGPT app - Their speech is streamed using WebRTC to OpenAI’s voice agent - The agent relays the speech prompt over websocket to GPT-4o - GPT-4o runs inference and streams speech packets (over websocket) back to the agent - The agent relays generated speech using WebRTC back to the user’s device The…

    2024 · github.com · its alternatives →

  19. 19

    Human Like AI Voices API – At a Fraction of the Cost.

    2025 · lemonfox.ai · its alternatives →

  20. 20
    YOUS▲228

    Audio/video calls with AI-based translator

    2021 · yous.ai · its alternatives →

  21. 21
    OpenWispr▲190

    100% local open source AI speech-to-text model

    2025 · openwhispr.com · its alternatives →

  22. 22

    The voice for your real-time AI applications

    2025 · kyutai.org · its alternatives →

  23. 23

    A new spoken language training app based on ChatGPT

    2023 · trancy.org · its alternatives →

  24. 24

    Hi! It's a complete product with integrations to Auth0, OpenAI, Google Cloud and Stripe, which consists of Next.js Web App, Node.js + Express Web API and Python + FastAPI AI API I've built this software, because I wanted to make money by selling tokens to enable users talking with the chatbot. But I think Google / Apple will include such AI-powered assistant in their products soon, so nobody will pay me for using it So I open source the product today and share it as a GNU GPL-2 licensed software I'm happy to assist in case if something is unclear or requires additional docs and answer…

    2023 · github.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →