Alternatives

Products that do what Voice Agent API does

One API to build production-ready voice agents

1. 1
   Grok Voice Think Fast 1.0▲127

   Our most capable voice agent is now available via API

   Apr 2026

2. 2
   Canonical AI▲227

   Analytics for your voice AI agent

   2024

3. 3
   Voicebun▲189

   Build voice agents in seconds

   2025

4. 4
   SpeechifyAI Simba Voice Agents▲161

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

   Jul 2026

5. 5
   AQX▲103

   Build AI voice agents to automate sales & support

   2025

6. 6
   Async Voice AI▲248

   High-quality text-to-speech, designed for developers

   2025

7. 7
   Grok Voice Agent API▲127

   Bringing the power of Grok Voice to all developers

   Dec 2025

8. 8
   Klariqo AI Voice Assistants▲199

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

   Nov 2025

9. 9
   Calldock▲114

   Instantly call your website leads with AI voice agents

   2025

10. 10
    AssemblyAI: Universal-3 Pro Streaming▲118

    The most accurate streaming speech model for voice agents.

    Mar 2026

11. 11
    Speechly Reactive Voice UI API▲147

    Build voice features remarkably fast

    2022

12. 12
    Voice Agents▲105

    Turn expertise into 24/7 client-facing AI voice agents

    Apr 2026

13. 13
    Bolna Agent Studio▲132

    Build Voice AI Agent in 10 Minutes

    Jul 2026

14. 14
    Listnr 2.0▲248

    Create realistic AI Voiceovers within seconds

    2022

15. 15
    MeetStream AI▲180

    Unified API & Infra for AI Meeting Agents

    17d ago · meetstream.ai

16. 16
    Cartesia Sonic▲148

    Sonic is the fastest human-like voice API.

    2024

17. 17
    Realtime TTS-2▲153

    Voice AI that feels as good as it sounds

    May 2026

18. 18
    Audio Transcription API by Scale▲249

    Audio transcription API powered by humans and AI

    2016

19. 19
    SigmaMind MCP▲121

    Build and control voice AI agents via MCP

    Apr 2026

20. 20
    Voicejacket (Beta)▲205

    AI voices so real you won't believe it

    2023

21. 21
    Parrot Speech-to-text API▲194

    Fast, accurate STT for production-grade voice agents

    May 2026

22. 22
    Obi▲199

    AI that runs your 1:1 onboarding calls

    Feb 2026

23. 23
    LightLayer▲94

    Review code 5x faster with your voice

    2025

24. 24
    Cols.ai▲139

    AI phone calling platform

    2024

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