HAIL.SO / DISPATCH · 2026-07-11 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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01

Large language models

2 models
OpenAI
GPT-4o
×
Perplexity
Sonar
×
Output $/MTok$10.00$1.00
Input $/MTok$2.50$1.00
Cached input $/MTok$1.2500
Context window128,000128,000
Output cap16,3848,000
Modalitiesin: text, image / out: textin: text / out: text
Tool use
Structured output
FamilyGPT-4oSonar
Knowledge cutoff2023-10-01
Verified2026-07-022026-07-02
Sourceprovider page ↗provider page ↗
02

Speech to text

2 models
AssemblyAI
Universal-2
×
Speechmatics
Speechmatics Enhanced
×
$/min$0.002500$0.002150
$/min batch
Streaming
Realtime
Languages99+56+
Diarizationextra-costincluded
TTFW
Verified2026-07-022026-07-02
Sourceprovider page ↗provider page ↗
03

Text to speech

2 models
Smallest.ai
Lightning v3.1
×
Cartesia
Sonic 2
×
$/1M chars$17.50$50.00
Voice qualityneuralneural
Voice cloning✓ included✓ included
Voice count217
Languagesen, hi, es, mr, kn, ta, bn, gu, te, ml, pa, oren, fr, de, es, pt, zh, ja, ko
SSML support
TTFB200ms90ms
Output formatspcm, mp3, wav, ulaw, alaw
Verified2026-07-022026-07-02
Sourceprovider page ↗provider page ↗