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Apertis

Compare models

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

  1. S2.1 ProFish AudioRemove
  2. Voxtral Small 24B 2507 STTMistral AIRemove
  3. Universal-3.5 ProAssemblyAIRemove
s2.1-pro vs voxtral-small-24b-2507-stt vs universal-3-5-pro
AttributeS2.1 Pros2.1-proVoxtral Small 24B 2507 STTvoxtral-small-24b-2507-sttUniversal-3.5 Prouniversal-3-5-pro
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 AudioMistral AIAssemblyAI
Categoryvoicevoicevoice
Charge typePay As You GoPay As You GoPay As You Go
Released2026-07-292026-08-132026-09-22
Description
SummaryFish Audio S2.1 Pro text-to-speech. Billed per UTF-8 byte of input text.Mistral AI Voxtral Small (24B) speech-to-text. Billed per second of audio.AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.