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AI · alternatives · 2026

24 alternatives to Voice AI SDK – Build agents that sing, email, and play games

I’ve been working on an SDK for creating voice AI apps. If you’ve ever wanted to make consumer voice apps, this is for you. There are some neat ideas in here that I’m really proud of: the decorators make everything very readable, and the prompting system is wonderfully dynamic. The basic setup command is: npx create-pocket-app This will create a Next.js app that’s ready to deploy. Check out the live examples on the home page to get a feel for what’s possible, and to see the code!

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
    NovaVoice▲578

    Hey HN, Today I’d like to show what I’ve recently built with my 2 friends. We’ve called it Nova. The idea is to built all-purpose AI Voice Assistant, which is able to interact with mail, to-do apps, messengers and socials, task trackers, apps like UberEats, Notion and some other daily apps. How we decided to work on it: We’ve recently read YC Request for startups Summer25 and were inspired by the idea of AI Voice Assistant for Mail by YC partner Tyler Bosmeny. What we’ve got: We’ve gone a bit further than Assistant for mail only and connected Gmail, Todoist, Google Calendar, and…

    Apr 2026 · novavoice.app · its alternatives →

  2. 2

    The open-source framework for real-time AI voice

    2025 · videosdk.live · its alternatives →

  3. 3
    Voicebun▲189

    Hey HN, I built Voicebun as a pet project because I was frustrated with how locked-down and rigid voice agents still are—many tools are either closed platforms, lack deep customization, or charge a lot just to test ideas. I wanted a way to quickly spin up AI voice agents that I could fully control—from the voice itself to the logic behind every word. Voicebun is an open-source voice agent builder. You can: - Clone voices and generate audio using your own scripts and prompts - Dynamically change prompts based on user input - Add custom logic through functions and webhooks (e.g. hit an API,…

    2025 · voicebun.com · its alternatives →

  4. 4
    Play AI▲447

    The voice interface of AI

    2024 · its alternatives →

  5. 5
    Vapi▲547

    Voice AI agents for Developers

    2025 · vapi.ai · its alternatives →

  6. 6
    api.ai▲299

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

    2014 · its alternatives →

  7. 7
    VoiceXD▲86

    Design and build custom AI assistants

    2023 · its alternatives →

  8. 8

    Bringing the power of Grok Voice to all developers

    Dec 2025 · x.ai · its alternatives →

  9. 9

    AI Voice assistant in 3 minutes. Built for non-developers

    Nov 2025 · klariqo.com · its alternatives →

  10. 10

    Create chatbots and vocal apps in just a few clicks

    2017 · bot.viseo.io · its alternatives →

  11. 11AH
  12. 12

    Build lovable little apps with your voice in your browser

    2025 · its alternatives →

  13. 13

    Human-like voices for every content

    2023 · cohesive.so · its alternatives →

  14. 14

    Our most capable voice agent is now available via API

    Apr 2026 · x.ai · its alternatives →

  15. 15

    One API to build production-ready voice agents

    Apr 2026 · assemblyai.com · its alternatives →

  16. 16

    Add Siri like Native AI Agents in you App. Contribute to SugarAI-HQ/CopilotOne development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  17. 17WB

    Hi HN - we’ve been working on a new UX for building realtime voice agents with minimal code. We’ve built a ton of voice agents in the past few years. We noticed that voice agent dev follows a pretty typical pattern: ⁃ Start with a “single prompt” version that dumps all relevant context and instructions into a one prompt, and provide access to all necessary tools the agent will ever need ⁃ As the agent gets more complex and users discover more edge cases, break the single-prompt version out into a more complex structure that gives a user more control over the precise conversational flow.…

    2025 · its alternatives →

  18. 18

    Build AI voice agents in minutes

    2025 · vocaline.ai · its alternatives →

  19. 19MY

    Upload a voice and write a personality prompt, or try the pre-made characters. Built by augmenting Gemma 3 12B with our new text-to-speech and speech-to-text models, both of which we will release as open-source soon. Stay tuned.

    2025 · unmute.sh · its alternatives →

  20. 20

    Build and deploy custom AI Voice Agents for your business

    2025 · smoovecall.com · its alternatives →

  21. 21

    Build and ship reliable voice AI agents just by prompting

    2025 · omnidim.io · its alternatives →

  22. 22

    Create Your AI Voice in Seconds

    2025 · poppop.ai · its alternatives →

  23. 23

    open-source SDK that gives your AI agent a phone number

    Jul 2026 · github.com · its alternatives →

  24. 24

    Self hostable voice AI API for building production voice agents with a typed REST API, webhooks, and a developer dashboard.

    Jun 2026 · voice-ai.dev · 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 →