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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. MAI-Transcribe 2MicrosoftRemove
  2. Perceptron Mk1.5PerceptronRemove
  3. GPT-6 LunaOpenAIRemove
  4. S2 ProFish AudioRemove

4 is the maximum. Remove one to add another.

mai-transcribe-2 vs perceptron-mk1.5 vs gpt-6-luna vs s2-pro
AttributeMAI-Transcribe 2mai-transcribe-2Perceptron Mk1.5perceptron-mk1.5GPT-6 Lunagpt-6-lunaS2 Pros2-pro
Pricing
Input$0 / 1M$0.15 / 1M$0.10 / 1M$0 / 1M
Output$0 / 1M$1.50 / 1M$0.50 / 1M$0 / 1M
Cache Write (5m)Not applicable$0.15 / 1M$0.10 / 1MNot applicable
Cache Write (1h)Not applicable$0.15 / 1M$0.10 / 1MNot applicable
Cache ReadNot applicable$0.15 / 1M$0.10 / 1MNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max contextN/A36.9K1.1MN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionNoNoYesNo
Function CallingNoNoYesNo
JSON ModeNoNoYesNo
StreamingNoYesYesNo
Catalogue
ProviderMicrosoftPerceptronOpenAIFish Audio
Categoryvoicechatchatvoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released2026-09-032026-09-25—2026-07-29
Description
SummaryMicrosoft MAI-Transcribe-2 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 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, optimized for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks. It combines low-cost, responsive inference with the GPT-6 family’s improvements in factual reliability and clear, concise communication. At higher reasoning effort, GPT-6 Luna can also handle complex software engineering and computer-use workflows that previously required a Sol-tier model, making it a versatile choice for scalable production applications that need to balance speed, cost, and capability.Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.