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

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02

Speech to text

4 models
Microsoft Azure
Azure Speech (Batch)
×
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Universal-2
×
Speechmatics
Speechmatics Enhanced
×
$/min$0.006000$0.003300$0.002500$0.004000
$/min batch
Streaming
Realtime
Languages100+en99+55+
Diarizationincludedincludedextra-costincluded
TTFW
Verified2026-05-19stale 42d2026-05-19stale 42d2026-05-05stale 56d2026-05-19stale 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 ↗