Skip to content
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. S2.1 ProFish AudioRemove
  3. Grok STT 1.0xAIRemove
perceptron-mk1.5 vs s2.1-pro vs grok-stt-1.0
AttributePerceptron Mk1.5perceptron-mk1.5S2.1 Pros2.1-proGrok STT 1.0grok-stt-1.0
Pricing
Input$0.15 / 1M$0 / 1M$0 / 1M
Output$1.50 / 1M$0 / 1M$0 / 1M
Cache Write (5m)$0.15 / 1MNot applicableNot applicable
Cache Write (1h)$0.15 / 1MNot applicableNot applicable
Cache Read$0.15 / 1MNot applicableNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M
Context
Max context36.9KN/AN/A
Max outputN/AN/AN/A
Capabilities
VisionNoNoNo
Function CallingNoNoNo
JSON ModeNoNoNo
StreamingYesNoNo
Catalogue
ProviderPerceptronFish AudioxAI
Categorychatvoicevoice
Charge typePay As You GoPay As You GoPay As You Go
Released2026-09-252026-07-292026-07-23
Description
SummaryPerceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Fish Audio S2.1 Pro text-to-speech. Billed per UTF-8 byte of input text.xAI Grok STT 1.0 speech-to-text. Billed per second of audio.