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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 AstraOpenAIRemove
  2. S1Fish AudioRemove
  3. Perceptron Mk1.5PerceptronRemove
  4. Voxtral Small 24B 2507 STTMistral AIRemove

4 is the maximum. Remove one to add another.

gpt-6-astra vs s1 vs perceptron-mk1.5 vs voxtral-small-24b-2507-stt
AttributeGPT-6 Astragpt-6-astraS1s1Perceptron Mk1.5perceptron-mk1.5Voxtral Small 24B 2507 STTvoxtral-small-24b-2507-stt
Pricing
Input$10.00 / 1M$0 / 1M$0.15 / 1M$0 / 1M
Output$50.00 / 1M$0 / 1M$1.50 / 1M$0 / 1M
Cache Write (5m)$10.00 / 1MNot applicable$0.15 / 1MNot applicable
Cache Write (1h)$10.00 / 1MNot applicable$0.15 / 1MNot applicable
Cache Read$10.00 / 1MNot applicable$0.15 / 1MNot applicable
Web Search$0 / 1M$0 / 1M$0 / 1M$0 / 1M
Context
Max context1MN/A36.9KN/A
Max outputN/AN/AN/AN/A
Capabilities
VisionYesNoNoNo
Function CallingYesNoNoNo
JSON ModeYesNoNoNo
StreamingYesNoYesNo
Catalogue
ProviderOpenAIFish AudioPerceptronMistral AI
Categorychatvoicechatvoice
Charge typePay As You GoPay As You GoPay As You GoPay As You Go
Released—2026-07-292026-09-252026-08-13
Description
SummaryGPT-6 Astra is OpenAI's flagship model for demanding end-to-end professional work, designed for advanced analysis, software engineering, deep research, scientific tasks, and document creation. It is particularly strong in long-horizon agentic workflows, including tasks that require sustained reasoning, tool orchestration, and computer and browser use, making it well suited for complex autonomous workflows and production-grade knowledge work.Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.Mistral AI Voxtral Small (24B) speech-to-text. Billed per second of audio.