HAIL.SO / DISPATCH · 2026-07-12 · COMPARE
FILE: COMPARE · 6 of 6 slots

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01

Large language models

1 model
OpenAI
GPT-4o
×
Output $/MTok$10.00
Input $/MTok$2.50
Cached input $/MTok$1.2500
Context window128,000
Output cap16,384
Modalitiesin: text, image / out: text
Tool use
Structured output
FamilyGPT-4o
Knowledge cutoff2023-10-01
Verified2026-07-02
Sourceprovider page ↗
02

Speech to text

3 models
AssemblyAI
Universal-Streaming
×
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Whisper-Streaming
×
$/min$0.002500$0.002150$0.005000
$/min batch
Streaming
Realtime
Languagesen56+99+
Diarizationextra-costincludedextra-cost
TTFW
Verified2026-07-022026-07-022026-07-02
Sourceprovider page ↗provider page ↗provider page ↗
03

Text to speech

2 models
Smallest.ai
Lightning v3.1
×
Deepgram
Deepgram Aura 2
×
$/1M chars$17.50$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, mp3, wav, ulaw, alawwav, mp3, linear16, mulaw, alaw, opus
Verified2026-07-022026-07-02
Sourceprovider page ↗provider page ↗