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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. GPT-6 Luna ProOpenAIRemove
  4. Gemini 3.5 TranscribeGoogleRemove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs s2-pro vs gpt-6-luna-pro vs gemini-3.5-transcribe
AttributePerceptron Mk1.5perceptron-mk1.5S2 Pros2-proGPT-6 Luna Progpt-6-luna-proGemini 3.5 Transcribegemini-3.5-transcribe
Pricing
Input$0.15 / 1M$0 / 1M$0.10 / 1M$0 / 1M
Output$1.50 / 1M$0 / 1M$0.50 / 1M$0 / 1M
Cache Write (5m)$0.15 / 1MNot applicable$0.10 / 1MNot applicable
Cache Write (1h)$0.15 / 1MNot applicable$0.10 / 1MNot applicable
Cache Read$0.15 / 1MNot applicable$0.10 / 1MNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context36.9KN/A1.1M98.3K
Max outputN/AN/AN/AN/A
Capabilities
VisionNoNoYesYes
Function CallingNoNoYesYes
JSON ModeNoNoYesNo
StreamingYesNoYesNo
Catalogue
ProviderPerceptronFish AudioOpenAIGoogle
Categorychatvoicechatvoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-09-252026-07-29—2026-09-25
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.GPT-6 Luna Pro uses the same underlying model as GPT-6 Luna, but runs with reasoning.mode set to pro for higher-quality responses on complex tasks. It combines Luna's speed and cost efficiency with deeper reasoning and more reliable multi-step execution, making it well suited for advanced coding, computer use, and agentic workflows where higher solution quality is needed without moving to a larger GPT-6 tier.Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.