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

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01

Large language models

3 models
OpenAI
OpenAI o3
×
Perplexity
Sonar
×
OpenAI
GPT-4o
×
Output $/MTok$8.00$1.00$10.00
Input $/MTok$2.00$1.00$2.50
Cached input $/MTok$0.5000$1.2500
Context window200,000128,000128,000
Output cap100,0008,00016,384
Modalitiesin: text, image / out: textin: text / out: textin: text, image / out: text
Tool use
Structured output
Familyo-seriesSonarGPT-4o
Knowledge cutoff2024-06-012023-10-01
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
02

Speech to text

2 models
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Universal-Streaming English
×
$/min$0.002150$0.002500
$/min batch
Streaming
Realtime
Languages56+en
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 ↗