HAIL.SO / DISPATCH · 2026-07-24 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

← all costsclear
02

Speech to text

3 models
AssemblyAI
Universal-2
×
Rev.ai
Rev.ai Reverb
×
Rev.ai
Rev.ai Whisper Fusion
×
$/min$0.002500$0.003300$0.005000
$/min batch
Streaming
Realtime
Languages99+enen
Diarizationextra-costincludedincluded
TTFW
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
03

Text to speech

3 models
Deepgram
Deepgram Aura 2
×
Smallest.ai
Lightning v3.1
×
OpenAI
TTS-1
×
$/1M chars$30.00$17.50$15.00
Voice qualityneuralneuralneural
Voice cloning✓ included
Voice count217
Languagesen, es, de, fr, nl, it, jaen, hi, es, mr, kn, ta, bn, gu, te, ml, pa, oren
SSML support
TTFB200ms
Output formatswav, mp3, linear16, mulaw, alaw, opuspcm, mp3, wav, ulaw, alaw
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗