Alternatives

Products that do what api.ai does

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

1SA
Siri-as-a-Service Speech API▲242
2014 · wit.ai
2
Async Voice AI▲248
High-quality text-to-speech, designed for developers
2025
3
Languify▲242
Make every student & teacher feel like a superhero
2023
4
OpenCopilot v2▲143
Siri, but for your product
2024
5
Vocalo.ai▲178
Become a Fluent English speaker by talking with AI
2024
6
SpeakingAI▲131
Practice speaking skills with personalized AI conversations
2025
7
Routine AI▲203
Control work with your voice. The Siri for work.
Jul 2026
8
Apiway.ai▲347
Connect apps with each other
2020
9
English AI▲85
Practice conversation in English with AI
2020
10
Lemonfox.ai▲133
Human Like AI Voices API – At a Fraction of the Cost.
2025
11
Output Media API by Recall.ai▲202
API to build interactive AI agents that talk in meetings
2024
12
Text Reader AI▲158
Free text-to-speech generator with realistic AI voices
2024
13
VoiceAI▲116
Capture every conversation
2023
14
Speech-to-Speech▲119
Use your voice to create realistic AI speech in real-time
2022
15
Hound▲230
Voice search and assistant app. A better Siri.
2016
16
Dialog▲226
AI voice agents that can talk to your users
2025
17
Audio Transcription API by Scale▲249
Audio transcription API powered by humans and AI
2016
18
Text-to-Speech by Smallest.ai▲121
Hyper-realistic AI voiceovers
2025
19
Labs AI▲93
Turn any text into natural AI voiceovers on iPhone
Jun 2026
20
Parrot Speech-to-text API▲194
Fast, accurate STT for production-grade voice agents
May 2026
21
VoiceBot AI▲43
Your AI assistant for instant audio-to-text transcriptions
2024
22
Dial8▲120
Private, on-device speech-to-text for every app
2024
23
OpenAI Assistants API▲183
Designed to help developers build powerful AI assistants
2023
24
YOUS▲228
Audio/video calls with AI-based translator
2021

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