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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. S1Fish AudioRemove
  2. Universal-3.5 ProAssemblyAIRemove
  3. Aura-2DeepgramRemove
s1 vs universal-3-5-pro vs aura-2
AttributeS1s1Universal-3.5 Prouniversal-3-5-proAura-2aura-2
Pricing
Input$0 / 1M$0 / 1M$0 / 1M
Output$0 / 1M$0 / 1M$0 / 1M
Cache Write (5m)Not applicableNot applicableNot applicable
Cache Write (1h)Not applicableNot applicableNot applicable
Cache ReadNot applicableNot applicableNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M
Context
Max contextN/AN/AN/A
Max outputN/AN/AN/A
Capabilities
VisionNoNoNo
Function CallingNoNoNo
JSON ModeNoNoNo
StreamingNoNoNo
Catalogue
ProviderFish AudioAssemblyAIDeepgram
Categoryvoicevoicevoice
Charge typePay As You GoPay As You GoPay As You Go
Released2026-07-292026-09-222026-07-16
Description
SummaryFish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.Deepgram Aura-2 text-to-speech for real-time voice applications. Billed per input character.