HAIL.SO / DISPATCH · 2026-07-26 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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01

Large language models

2 models
xAI
Grok 4
×
Perplexity
Sonar
×
Output $/MTok$15.00$1.00
Input $/MTok$3.00$1.00
Cached input $/MTok$0.7500
Context window256,000128,000
Output cap256,0008,000
Modalitiesin: text, image / out: textin: text / out: text
Tool use
Structured output
FamilyGrok 4Sonar
Knowledge cutoff2024-11-30
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗
02

Speech to text

2 models
Rev.ai
Rev.ai Reverb
×
AssemblyAI
Whisper-Streaming
×
$/min$0.003300$0.005000
$/min batch
Streaming
Realtime
Languagesen99+
Diarizationincludedextra-cost
TTFW
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗
03

Text to speech

2 models
Smallest.ai
Lightning v3.1
×
Deepgram
Deepgram Aura 2
×
$/1M chars$17.50$30.00
Voice qualityneuralneural
Voice cloning✓ included
Voice count217
Languagesen, hi, es, mr, kn, ta, bn, gu, te, ml, pa, oren, es, de, fr, nl, it, ja
SSML support
TTFB200ms
Output formatspcm, mp3, wav, ulaw, alawwav, mp3, linear16, mulaw, alaw, opus
Verified2026-07-192026-07-19
Sourceprovider page ↗provider page ↗