Dev tools · alternatives · 2026

Wit.ai is a speech API that enables developers to build voice interfaces for applications. It converts spoken language into actionable data, allowing software to understand and respond to voice commands. The service is… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Siri-as-a-Service Speech API launched in 2014; newer entries below may have overtaken it.

1. 1
   api.ai▲301

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

   2014 · its alternatives →

2. 2WN
   Wit – Natural language for your app▲321

   2013 · wit.ai · its alternatives →

3. 3
   AssemblyAI - Speech-to-Text API▲996

   APIs to automatically transcribe and understand audio

   2017 · assemblyai.com · its alternatives →

4. 4
   Play AI▲447

   The voice interface of AI

   2024 · its alternatives →

5. 5
   wit.ai▲121

   Natural Language API

   2014 · wit.ai · its alternatives →

6. 6
   Vocalo.ai▲178

   Become a Fluent English speaker by talking with AI

   2024 · vocalo.ai · its alternatives →

7. 7
   API.AI for Google Assistant▲378

   Build conversation actions for Google Home and more

   2016 · its alternatives →

8. 8
   AI Chat-avatar▲696

   Conversational AI assistant always ready do the job for you

   2025 · pitchavatar.com · its alternatives →

9. 9
   AI Voices by Asyncflow v1.0▲401

   Premium AI voice quality without the premium price tag.

   2025 · async.com · its alternatives →

10. 10
    Speechly Reactive Voice UI API▲147

    Build voice features remarkably fast

    2022 · roblox.com · its alternatives →

11. 11
    SpeakingAI▲131

    Practice speaking skills with personalized AI conversations

    2025 · its alternatives →

12. 12
    Lexika – Search Engine for Spoken Words/Phrases in YouTube Videos▲85

    Power enterprise voice solutions with Deepgram’s Speech-to-Text, Text-to-Speech, and Voice Agent APIs. Real-time, accurate, and built for scale.

    2015 · lexika.io · its alternatives →

13. 13
    Parrot Speech-to-text API▲194

    Fast, accurate STT for production-grade voice agents

    May 2026 · ringg.ai · its alternatives →

14. 14
    PlayHT-Turbo▲148

    The fastest generative AI Text-to-Speech API

    2023 · its alternatives →

15. 15
    Hound▲230

    Voice search and assistant app. A better Siri.

    2016 · apps.apple.com · its alternatives →

16. 16
    SpeakHints▲278

    Real-time AI powered private speaking hints

    2024 · speakhints.com · its alternatives →

17. 17
    Text to Speech API▲91

    Deliver a better voice experience

    2023 · its alternatives →

18. 18
    Microsoft AI (MAI) Voice-1▲120

    Highly expressive and natural speech generation model

    2025 · microsoft.ai · its alternatives →

19. 19
    answercall.ai▲98

    Your intelligent voice assistant

    2023 · answercall.ai · its alternatives →

20. 20LA
    Learn a new language by speaking with AI▲39

    2024 · fluent.im · its alternatives →

21. 21
    Lemonfox.ai▲133

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

    2025 · lemonfox.ai · its alternatives →

22. 22
    Wit.ai Bot Engine (Beta)▲186

    Helping developers make bots great again

    2016 · medium.com · its alternatives →

23. 23
    VoiceAI▲116

    Capture every conversation

    2023 · its alternatives →

24. 24
    Dialora.ai▲92

    24/7 conversational AI voice agents to handle customer calls

    2025 · dialora.ai · its alternatives →

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 →