HAIL.SO / DISPATCH · 2026-06-29 · COMPARE
FILE: COMPARE · 6 of 6 slots

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02

Speech to text

4 models
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Universal-Streaming
×
Rev.ai
Rev.ai Reverb
×
Microsoft Azure
Azure Speech (Batch)
×
$/min$0.004000$0.002500$0.003300$0.006000
$/min batch
Streaming
Realtime
Languages55+enen100+
Diarizationincludedextra-costincludedincluded
TTFW
Verified2026-05-19stale 41d2026-05-05stale 55d2026-05-19stale 41d2026-05-19stale 41d
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗
03

Text to speech

2 models
Deepgram
Deepgram Aura 2
×
Smallest.ai
Lightning v3.1
×
$/1M chars$30.00$25.00
Voice qualityneuralneural
Voice cloning✓ included
Voice count217
Languagesen, es, de, fr, nl, it, jaen, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or
SSML support
TTFB200ms
Output formatswav, mp3, linear16, mulaw, alaw, opuspcm, wav, mp3, mulaw
Verified2026-05-19stale 41d2026-05-19stale 41d
Sourceprovider page ↗provider page ↗