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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. Perceptron Mk1.5PerceptronRemove
  2. S2 ProFish AudioRemove
  3. Aura-2DeepgramRemove
  4. Gemini 3.5 TranscribeGoogleRemove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs s2-pro vs aura-2 vs gemini-3.5-transcribe
AttributePerceptron Mk1.5perceptron-mk1.5S2 Pros2-proAura-2aura-2Gemini 3.5 Transcribegemini-3.5-transcribe
Pricing
Input$0.15 / 1M$0 / 1M$0 / 1M$0 / 1M
Output$1.50 / 1M$0 / 1M$0 / 1M$0 / 1M
Cache Write (5m)$0.15 / 1MNot applicableNot applicableNot applicable
Cache Write (1h)$0.15 / 1MNot applicableNot applicableNot applicable
Cache Read$0.15 / 1MNot applicableNot applicableNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context36.9KN/AN/A98.3K
Max outputN/AN/AN/AN/A
Capabilities
VisionNoNoNoYes
Function CallingNoNoNoYes
JSON ModeNoNoNoNo
StreamingYesNoNoNo
Catalogue
ProviderPerceptronFish AudioDeepgramGoogle
Categorychatvoicevoicevoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-09-252026-07-292026-07-162026-09-25
Description
SummaryPerceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.Deepgram Aura-2 text-to-speech for real-time voice applications. Billed per input character.Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.