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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. S1Fish AudioRemove
  2. Universal-3.5 ProAssemblyAIRemove
  3. Perceptron Mk1.5PerceptronRemove
  4. GPT-6 Sol ProOpenAIRemove

4 is the maximum. Remove one to add another.

s1 vs universal-3-5-pro vs perceptron-mk1.5 vs gpt-6-sol-pro
AttributeS1s1Universal-3.5 Prouniversal-3-5-proPerceptron Mk1.5perceptron-mk1.5GPT-6 Sol Progpt-6-sol-pro
Pricing
Input$0 / 1M$0 / 1M$0.15 / 1M$2.00 / 1M
Output$0 / 1M$0 / 1M$1.50 / 1M$10.00 / 1M
Cache Write (5m)Not applicableNot applicable$0.15 / 1M$2.00 / 1M
Cache Write (1h)Not applicableNot applicable$0.15 / 1M$2.00 / 1M
Cache ReadNot applicableNot applicable$0.15 / 1M$2.00 / 1M
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max contextN/AN/A36.9K1.1M
Max outputN/AN/AN/AN/A
Capabilities
VisionNoNoNoYes
Function CallingNoNoNoYes
JSON ModeNoNoNoYes
StreamingNoNoYesYes
Catalogue
ProviderFish AudioAssemblyAIPerceptronOpenAI
Categoryvoicevoicechatchat
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-07-292026-09-222026-09-25—
Description
SummaryFish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.GPT-6 Sol Pro uses the same underlying model as GPT-6 Sol, but runs with reasoning.mode set to pro for higher-quality responses on complex and demanding tasks. Optimized for deeper reasoning, greater accuracy, and more reliable multi-step execution, it is particularly well suited for agentic coding, long-horizon software engineering, professional analysis, and complex automated workflows where solution quality takes priority over latency and cost.