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AI · alternatives · 2026

24 alternatives to Open-source simulation testing infra for voice agents

the first open-source platform for simulation testing, monitoring and self-improving voice agents - egma-ai/egma

Egma is an open-source platform for testing and monitoring voice agents in production environments. It provides simulation testing capabilities and self-improvement features, currently supporting LiveKit and Retell… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1
    TestAI▲402

    1,000+ automated tests for AI agents in one click

    2025 · nbulatest.ai · its alternatives →

  2. 2

    The open-source framework for real-time AI voice

    2025 · videosdk.live · its alternatives →

  3. 3

    Build Powerful Voice Agents

    2025 · openai.com · its alternatives →

  4. 4

    The voice AI auto-testing loop to simulate, evaluate & ship

    2025 · app.futureagi.com · its alternatives →

  5. 5
    Agenta▲362

    Open-source prompt management & evals for AI teams

    Nov 2025 · agenta.ai · its alternatives →

  6. 6
    Roark▲318

    Test, monitor, and improve your voice agents

    2025 · roark.ai · its alternatives →

  7. 7
    Intervo▲382

    The open-source platform for conversational AI

    2025 · intervo.ai · its alternatives →

  8. 8

    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 →

  9. 9

    Tighter instruction adherence in speech agents

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

  10. 10
    Latitude▲685

    Open-source AI agent monitoring platform. Full observability into what

    2024 · latitude.so · its alternatives →

  11. 11

    I've been obsessed for the past ~year with the possibilities of talking to LLMs. I built a bunch of one-off prototypes, shared code on X, started a Meetup group in SF, and co-hosted a big hackathon. It turns out that there are a few low-level problems that everybody building conversational/real-time AI needs to solve on the way to building/shipping something that works well: low-latency media transport, echo cancellation, voice activity detection, phrase endpointing, pipelining data between models/services, handling voice interruptions, swapping out different…

    2024 · github.com · its alternatives →

  12. 12
    Vapi▲547

    Voice AI agents for Developers

    2025 · vapi.ai · its alternatives →

  13. 13
    Vocera▲582

    Launch voice agents faster with simulation & monitoring

    2024 · cekura.ai · its alternatives →

  14. 14

    Automated testing for voice agents

    2024 · hamming.ai · its alternatives →

  15. 15
    Hathora▲148

    Explore, test & deploy production ready voice models.

    Nov 2025 · its alternatives →

  16. 16

    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 →

  17. 17

    Our goal with this project is to build a completely open source, state of the art turn detection model that can be used in any voice AI application. I've been experimenting with LLM voice conversations since GPT-4 was first released. (There's a previous front page Show HN about Pipecat, the open source voice AI orchestration framework I work on. [1]) It's been almost two years, and for most of that time, I've been expecting that someone would "solve" turn detection. We all built initial, pretty good 80/20 versions of turn detection on top of VAD (voice activity detection) models. And…

    2025 · github.com · its alternatives →

  18. 18OS

    Complete AI Platform: RAG Systems & Intelligent Agents for Local AI

    2025 · rlama.dev · its alternatives →

  19. 19

    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 →

  20. 20
    Janus▲268

    Simulation testing for AI agents

    2025 · withkairos.co · its alternatives →

  21. 21

    Voice agents powered by Simba 3.2 the world's #1 voice model

    Jul 2026 · speechify.ai · its alternatives →

  22. 22
    Voila▲141

    Open-source AI for real-time, expressive voice role-play

    2025 · voila.maitrix.org · its alternatives →

  23. 23

    Deploy your LiveKit Voice AI agents instantly

    2025 · oneclickdeploy.co · its alternatives →

  24. 24

    Hey HN, We are Winston, Edward, and James, and we built Meka Agent, an open-source framework that lets vision-based LLMs execute tasks directly on a computer, just like a person would. Backstory: In the last few months, we've been building computer-use agents that have been used by various teams for QA testing, but realized that the underlying browsing frameworks aren't quite good enough yet. As such, we've been working on a browsing agent. We achieved 72.7% on WebArena compared to the previous state of the art set by OpenAI's new ChatGPT agent at 65.4%. You can read more about it here:…

    2025 · 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 →