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

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01

Large language models

3 models
OpenAI
GPT-4.1
×
Perplexity
Sonar
×
OpenAI
GPT-5.5
×
Output $/MTok$8.00$1.00$30.00
Input $/MTok$2.00$1.00$5.00
Cached input $/MTok$0.5000$0.5000
Context window1,047,576128,0001,050,000
Output cap32,7688,000128,000
Modalitiesin: text, image / out: textin: text / out: textin: text, image / out: text
Tool use
Structured output
FamilyGPT-4.1SonarGPT-5.5
Knowledge cutoff2024-06-012025-12-01
Verified2026-07-192026-07-192026-07-19
Sourceprovider page ↗provider page ↗provider page ↗
02

Speech to text

1 model
Rev.ai
Rev.ai Reverb
×
$/min$0.003300
$/min batch
Streaming
Realtime
Languagesen
Diarizationincluded
TTFW
Verified2026-07-19
Sourceprovider page ↗
03

Text to speech

2 models
OpenAI
TTS-1
×
Smallest.ai
Lightning v3.1 Pro
×
$/1M chars$15.00$19.50
Voice qualityneuralneural
Voice cloning
Voice count
Languagesenen, 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
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗