HAIL.SO / DISPATCH · 2026-07-22 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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01

Large language models

2 models
Perplexity
Sonar Pro
×
OpenAI
GPT-5.4
×
Output $/MTok$15.00$15.00
Input $/MTok$3.00$2.50
Cached input $/MTok$0.2500
Context window200,0001,050,000
Output cap8,000128,000
Modalitiesin: text / out: textin: text, image / out: text
Tool use
Structured output
FamilySonarGPT-5.4
Knowledge cutoff2025-08-31
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗
02

Speech to text

3 models
Rev.ai
Rev.ai Reverb
×
Rev.ai
Rev.ai Whisper Fusion
×
Speechmatics
Speechmatics Enhanced
×
$/min$0.003300$0.005000$0.002150
$/min batch
Streaming
Realtime
Languagesenen56+
Diarizationincludedincludedincluded
TTFW
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider 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 ↗