HAIL.SO / DISPATCH · 2026-07-22 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

← all costsclear
02

Speech to text

3 models
OpenAI
GPT-4o Transcribe Diarize
×
Speechmatics
Speechmatics Enhanced
×
Rev.ai
Rev.ai Reverb
×
$/min$0.006000$0.002150$0.003300
$/min batch
Streaming
Realtime
Languages99+56+en
Diarizationincludedincludedincluded
TTFW
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
03

Text to speech

3 models
Cartesia
Sonic 3
×
LMNT
LMNT Blizzard
×
Deepgram
Deepgram Aura 2
×
$/1M chars$50.00$50.00$30.00
Voice qualityneuralneuralneural
Voice cloning✓ included✓ included
Voice count
Languages42+31+en, es, de, fr, nl, it, ja
SSML support
TTFB
Output formatswav, mp3, linear16, mulaw, alaw, opus
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗