HAIL.SO / DISPATCH · 2026-06-26 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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02

Speech to text

4 models
Microsoft Azure
Azure Speech (Batch)
×
Speechmatics
Speechmatics Enhanced
×
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Universal-Streaming
×
$/min$0.006000$0.004000$0.003300$0.002500
$/min batch
Streaming
Realtime
Languages100+55+enen
Diarizationincludedincludedincludedextra-cost
TTFW
Verified2026-05-19stale 38d2026-05-19stale 38d2026-05-19stale 38d2026-05-05stale 52d
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 38d2026-05-19stale 38d
Sourceprovider page ↗provider page ↗