HAIL.SO / DISPATCH · 2026-07-21 · 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
×
Output $/MTok$10.00$15.00
Input $/MTok$2.50$3.00
Cached input $/MTok$1.2500$0.7500
Context window128,000256,000
Output cap16,384256,000
Modalitiesin: text, image / out: textin: text, image / out: text
Tool use
Structured output
FamilyGPT-4oGrok 4
Knowledge cutoff2023-10-012024-11-30
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗
02

Speech to text

4 models
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Universal-Streaming
×
Speechmatics
Speechmatics Melia 1
×
Speechmatics
Speechmatics Enhanced
×
$/min$0.003300$0.002500$0.002150$0.002150
$/min batch
Streaming
Realtime
Languagesenen68+56+
Diarizationincludedextra-costincludedincluded
TTFW
Verified2026-07-192026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗