HAIL.SO / DISPATCH · 2026-07-25 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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01

Large language models

3 models
xAI
Grok 4.3
×
OpenAI
GPT-5.5
×
OpenAI
OpenAI o3
×
Output $/MTok$2.50$30.00$8.00
Input $/MTok$1.25$5.00$2.00
Cached input $/MTok$0.2000$0.5000$0.5000
Context window1,000,0001,050,000200,000
Output cap1,000,000128,000100,000
Modalitiesin: text, image / out: textin: text, image / out: textin: text, image / out: text
Tool use
Structured output
FamilyGrok 4GPT-5.5o-series
Knowledge cutoff2025-12-012024-06-01
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
02

Speech to text

1 model
AssemblyAI
Universal-2
×
$/min$0.002500
$/min batch
Streaming
Realtime
Languages99+
Diarizationextra-cost
TTFW
Verified2026-07-19
Sourceprovider page ↗
03

Text to speech

2 models
Smallest.ai
Lightning v3.1 Pro
×
LMNT
LMNT Blizzard
×
$/1M chars$19.50$50.00
Voice qualityneuralneural
Voice cloning✓ included
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, pl31+
SSML support
TTFB200ms
Output formatspcm, mp3, wav, ulaw, alaw
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗