HAIL.SO / DISPATCH · 2026-06-12 · COMPARE
FILE: COMPARE · 6 of 6 slots

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02

Speech to text

2 models
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Universal-Streaming
×
$/min$0.004000$0.002500
$/min batch
Streaming
Realtime
Languages55+en
Diarizationincludedextra-cost
TTFW
Verified2026-05-192026-05-05stale 38d
Sourceprovider page ↗provider page ↗
03

Text to speech

4 models
Google
Google Cloud TTS — Studio
×
Smallest.ai
Lightning v3.1
×
LMNT
LMNT Blizzard
×
Cartesia
Sonic 2
×
$/1M chars$160.00$25.00$50.00$50.00
Voice qualityneuralneuralneuralneural
Voice cloning✓ included✓ included✓ included
Voice count217
Languages40+en, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or31+15+
SSML support
TTFB200ms90ms
Output formatspcm, wav, mp3, mulaw
Verified2026-05-192026-05-192026-05-192026-05-19
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗