HAIL.SO / DISPATCH · 2026-07-12 · COMPARE
FILE: COMPARE · 6 of 6 slots

side by side.

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01

Large language models

1 model
OpenAI
GPT-5.5
×
Output $/MTok$30.00
Input $/MTok$5.00
Cached input $/MTok$0.5000
Context window1,050,000
Output cap128,000
Modalitiesin: text, image / out: text
Tool use
Structured output
FamilyGPT-5.5
Knowledge cutoff2025-12-01
Verified2026-07-02
Sourceprovider page ↗
02

Speech to text

3 models
Speechmatics
Speechmatics Enhanced
×
AssemblyAI
Universal-2
×
Speechmatics
Speechmatics Melia 1
×
$/min$0.002150$0.002500$0.002150
$/min batch
Streaming
Realtime
Languages56+99+68+
Diarizationincludedextra-costincluded
TTFW
Verified2026-07-022026-07-022026-07-02
Sourceprovider page ↗provider 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 ↗