HAIL.SO / DISPATCH · 2026-07-01 · COMPARE
FILE: COMPARE · 6 of 6 slots

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02

Speech to text

4 models
Microsoft Azure
Azure Speech (Batch)
×
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Universal-Streaming
×
Rev.ai
Rev.ai Reverb
×
$/min$0.006000$0.004000$0.002500$0.003300
$/min batch
Streaming
Realtime
Languages100+55+enen
Diarizationincludedincludedextra-costincluded
TTFW
Verified2026-05-19stale 43d2026-05-19stale 43d2026-05-05stale 57d2026-05-19stale 43d
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 43d2026-05-19stale 43d
Sourceprovider page ↗provider page ↗