HAIL.SO / DISPATCH · 2026-07-23 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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01

Large language models

2 models
OpenAI
GPT-4o
×
xAI
Grok 4.5
×
Output $/MTok$10.00$6.00
Input $/MTok$2.50$2.00
Cached input $/MTok$1.2500$0.3000
Context window128,000500,000
Output cap16,384500,000
Modalitiesin: text, image / out: textin: text, image / out: text
Tool use
Structured output
FamilyGPT-4oGrok 4
Knowledge cutoff2023-10-012026-02-01
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗
02

Speech to text

3 models
Rev.ai
Rev.ai Reverb
×
Speechmatics
Speechmatics Enhanced
×
Gladia
Gladia Solaria-3
×
$/min$0.003300$0.002150$0.010170
$/min batch
Streaming
Realtime
Languagesen56+en, fr, de, es, it
Diarizationincludedincludedincluded
TTFW
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
03

Text to speech

1 model
Smallest.ai
Lightning v3.1 Pro
×
$/1M chars$19.50
Voice qualityneural
Voice cloning
Voice count
Languagesen, hi, mr, ta, ml, te, kn, pa, bn, or, gu, ar, zh, id, ja, ko, ms, tr, vi, de, es, fr, it, pt, ru, el, fi, no, pl
SSML support
TTFB200ms
Output formatspcm, mp3, wav, ulaw, alaw
Verified2026-07-19
Sourceprovider page ↗