HAIL.SO / DISPATCH · 2026-07-27 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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02

Speech to text

3 models
Speechmatics
Speechmatics Enhanced
×
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Universal-Streaming
×
$/min$0.002150$0.003300$0.002500
$/min batch
Streaming
Realtime
Languages56+enen
Diarizationincludedincludedextra-cost
TTFW
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
03

Text to speech

3 models
Cartesia
Sonic Turbo
×
Smallest.ai
Lightning v3.1 Pro
×
OpenAI
TTS-1
×
$/1M chars$50.00$19.50$15.00
Voice qualityneuralneuralneural
Voice cloning✓ included
Voice count
Languagesen, fr, de, es, pt, zh, ja, hi, koen, hi, mr, ta, ml, te, kn, pa, bn, or, gu, ar, zh, id, ja, ko, ms, tr, vi, de, es, fr, it, pt, ru, el, fi, no, plen
SSML support
TTFB40ms200ms
Output formatspcm, mp3, wav, ulaw, alaw
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗