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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. Gemini 3.5 TranscribeGoogleRemove
  2. S2.1 ProFish AudioRemove
  3. Perceptron Mk1.5PerceptronRemove
  4. Nova-3DeepgramRemove

4 is the maximum. Remove one to add another.

gemini-3.5-transcribe vs s2.1-pro vs perceptron-mk1.5 vs nova-3
AttributeGemini 3.5 Transcribegemini-3.5-transcribeS2.1 Pros2.1-proPerceptron Mk1.5perceptron-mk1.5Nova-3nova-3
Pricing
Input$0 / 1M$0 / 1M$0.15 / 1M$0 / 1M
Output$0 / 1M$0 / 1M$1.50 / 1M$0 / 1M
Cache Write (5m)Not applicableNot applicable$0.15 / 1MNot applicable
Cache Write (1h)Not applicableNot applicable$0.15 / 1MNot applicable
Cache ReadNot applicableNot applicable$0.15 / 1MNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context98.3KN/A36.9KN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionYesNoNoNo
Function CallingYesNoNoNo
JSON ModeNoNoNoNo
StreamingNoNoYesNo
Catalogue
ProviderGoogleFish AudioPerceptronDeepgram
Categoryvoicevoicechatvoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-09-252026-07-292026-09-252026-07-15
Description
SummaryGoogle Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.Fish Audio S2.1 Pro text-to-speech. Billed per UTF-8 byte of input text.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Deepgram Nova-3 speech-to-text. Billed per second of audio.