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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. Claude Sonnet 5.5AnthropicRemove
  3. Universal-3.5 ProAssemblyAIRemove
  4. S2 ProFish AudioRemove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs claude-sonnet-5.5 vs universal-3-5-pro vs s2-pro
AttributePerceptron Mk1.5perceptron-mk1.5Claude Sonnet 5.5claude-sonnet-5.5Universal-3.5 Prouniversal-3-5-proS2 Pros2-pro
Pricing
Input$0.15 / 1M$2.00 / 1M$0 / 1M$0 / 1M
Output$1.50 / 1M$10.00 / 1M$0 / 1M$0 / 1M
Cache Write (5m)$0.15 / 1M$2.50 / 1MNot applicableNot applicable
Cache Write (1h)$0.15 / 1M$4.00 / 1MNot applicableNot applicable
Cache Read$0.15 / 1M$0.20 / 1MNot applicableNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context36.9K1MN/AN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionNoYesNoNo
Function CallingNoYesNoNo
JSON ModeNoYesNoNo
StreamingYesYesNoNo
Catalogue
ProviderPerceptronAnthropicAssemblyAIFish Audio
Categorychatchatvoicevoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-09-25—2026-09-222026-07-29
Description
SummaryPerceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, serving as a direct upgrade to Sonnet 5. It excels at feature development, bug fixing, and creating polished documents, presentations, and spreadsheets, while offering clearer writing and communication than its predecessor.AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.