HAIL.SO / DISPATCH · 2026-07-22 · COMPARE
FILE: COMPARE · 6 of 6 slots

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01

Large language models

3 models
OpenAI
OpenAI o1
×
xAI
Grok 4.5
×
OpenAI
GPT-4.1
×
Output $/MTok$60.00$6.00$8.00
Input $/MTok$15.00$2.00$2.00
Cached input $/MTok$7.5000$0.3000$0.5000
Context window200,000500,0001,047,576
Output cap100,000500,00032,768
Modalitiesin: text, image / out: textin: text, image / out: textin: text, image / out: text
Tool use
Structured output
Familyo-seriesGrok 4GPT-4.1
Knowledge cutoff2023-10-012026-02-012024-06-01
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
02

Speech to text

2 models
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Universal-Streaming
×
$/min$0.003300$0.002500
$/min batch
Streaming
Realtime
Languagesenen
Diarizationincludedextra-cost
TTFW
Verified2026-07-192026-07-19
Sourceprovider 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 ↗