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
×
OpenAI
GPT-5.5
×
Output $/MTok$10.00$30.00
Input $/MTok$2.50$5.00
Cached input $/MTok$1.2500$0.5000
Context window128,0001,050,000
Output cap16,384128,000
Modalitiesin: text, image / out: textin: text, image / out: text
Tool use
Structured output
FamilyGPT-4oGPT-5.5
Knowledge cutoff2023-10-012025-12-01
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
×
Gladia
Gladia Solaria-1
×
$/min$0.003300$0.002500$0.002150$0.012500
$/min batch$0.010170
Streaming
Realtime
Languagesenen68+100+
Diarizationincludedextra-costincludedincluded
TTFW
Verified2026-07-192026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗provider page ↗