HAIL.SO / DISPATCH · 2026-06-30 · COMPARE
FILE: COMPARE · 6 of 6 slots

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02

Speech to text

4 models
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Universal-2
×
Rev.ai
Rev.ai Reverb
×
Microsoft Azure
Azure Speech (Batch)
×
$/min$0.004000$0.002500$0.003300$0.006000
$/min batch
Streaming
Realtime
Languages55+99+en100+
Diarizationincludedextra-costincludedincluded
TTFW
Verified2026-05-19stale 42d2026-05-05stale 56d2026-05-19stale 42d2026-05-19stale 42d
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗
03

Text to speech

2 models
Smallest.ai
Lightning v3.1
×
Deepgram
Deepgram Aura 2
×
$/1M chars$25.00$30.00
Voice qualityneuralneural
Voice cloning✓ included
Voice count217
Languagesen, hi, es, mr, kn, ta, bn, gu, te, ml, pa, oren, es, de, fr, nl, it, ja
SSML support
TTFB200ms
Output formatspcm, wav, mp3, mulawwav, mp3, linear16, mulaw, alaw, opus
Verified2026-05-19stale 42d2026-05-19stale 42d
Sourceprovider page ↗provider page ↗