🎤STT + TTS + realtime
Build a Voice App
Everything you need to add voice to your application: speech-to-text, text-to-speech, and real-time audio streaming.
7
APIs
6
No card
85/100
Avg score
7 providers in this collection
Browse all APIs →Deepgram
Speech
90
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite90/100
Best-in-class speech-to-text. $200 free credits.
$200 credits · no card✓ no card
Real-timeLow latencyMany languages
ElevenLabs
Speech
88
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite88/100
Most realistic AI voices. 10k characters/month free.
10k characters/month · no card✓ no card
TTSVoice cloningMultilingual
AssemblyAI
Speech
87
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite87/100
Production-grade ASR + LLMs. $50 free credits.
$50 credits · no card✓ no card
ASRSpeaker diarizationSentiment analysis
Play.ht
Speech
83
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite83/100
Ultra-realistic TTS. 12,500 chars/month free.
12,500 chars/month · no card✓ no card
TTSVoice cloningStreaming
Neets.ai
Speech
80
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite80/100
100k characters/month free TTS. 100+ voices.
100k chars/month · no card✓ no card
TTSMultilingual100+ voices
Gladia
Speech
82
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite82/100
Real-time STT with speaker diarization. $10 free credits.
$10 credits · no card✓ no card
ASRReal-timeDiarization
Google Cloud TTS
Speech
84
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite84/100
WaveNet & Studio voices. 1M chars/month free.
1M chars/month free · card required
TTSWaveNetMultilingual