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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. GPT-6 Astra ProOpenAIRemove
  2. Perceptron Mk1.5PerceptronRemove
  3. S2 ProFish AudioRemove
  4. Transcribe 1 ProFish AudioRemove

4 is the maximum. Remove one to add another.

gpt-6-astra-pro vs perceptron-mk1.5 vs s2-pro vs transcribe-1-pro
AttributeGPT-6 Astra Progpt-6-astra-proPerceptron Mk1.5perceptron-mk1.5S2 Pros2-proTranscribe 1 Protranscribe-1-pro
Pricing
Input$10.00 / 1M$0.15 / 1M$0 / 1M$0 / 1M
Output$50.00 / 1M$1.50 / 1M$0 / 1M$0 / 1M
Cache Write (5m)$10.00 / 1M$0.15 / 1MNot applicableNot applicable
Cache Write (1h)$10.00 / 1M$0.15 / 1MNot applicableNot applicable
Cache Read$10.00 / 1M$0.15 / 1MNot applicableNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context1M36.9KN/AN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionYesNoNoNo
Function CallingYesNoNoNo
JSON ModeYesNoNoNo
StreamingYesYesNoNo
Catalogue
ProviderOpenAIPerceptronFish AudioFish Audio
Categorychatchatvoicevoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released—2026-09-252026-07-292026-09-24
Description
SummaryGPT-6 Astra Pro uses the same underlying model as GPT-6 Astra, but runs with reasoning.mode set to pro for higher-quality responses on complex tasks. Optimized for deeper reasoning, greater accuracy, and more reliable multi-step execution, it is well suited for demanding coding, analysis, and agentic workflows where solution quality takes priority over speed and cost.Perceptron 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.Fish Audio Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <|speaker:0|>. Billed per second of audio.