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

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01

Large language models

5 models
OpenAI
OpenAI o3
×
xAI
Grok 4.5
×
xAI
Grok 3
×
OpenAI
GPT-5.5
×
OpenAI
OpenAI o4-mini
×
Output $/MTok$8.00$6.00$15.00$30.00$4.40
Input $/MTok$2.00$2.00$3.00$5.00$1.10
Cached input $/MTok$0.5000$0.3000$0.7500$0.5000$0.2750
Context window200,000500,000131,0721,050,000200,000
Output cap100,000500,000131,072128,000100,000
Modalitiesin: text, image / out: textin: text, image / out: textin: text / out: textin: text, image / out: textin: text, image / out: text
Tool use
Structured output
Familyo-seriesGrok 4Grok 3GPT-5.5o-series
Knowledge cutoff2024-06-012026-02-012024-11-302025-12-012024-06-01
Verified2026-07-192026-07-192026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗provider page ↗
03

Text to speech

1 model
Smallest.ai
Lightning v3.1
×
$/1M chars$17.50
Voice qualityneural
Voice cloning✓ included
Voice count217
Languagesen, hi, es, mr, kn, ta, bn, gu, te, ml, pa, or
SSML support
TTFB200ms
Output formatspcm, mp3, wav, ulaw, alaw
Verified2026-07-19
Sourceprovider page ↗