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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. GPT-6 AstraOpenAIRemove
  2. Muse Spark OpenMetaRemove
  3. Perceptron Mk1.5PerceptronRemove
  4. mai-ds-r1:freeNot in the catalogueRemove

4 is the maximum. Remove one to add another.

gpt-6-astra vs muse-spark-open vs perceptron-mk1.5 vs mai-ds-r1:free
AttributeGPT-6 Astragpt-6-astraMuse Spark Openmuse-spark-openPerceptron Mk1.5perceptron-mk1.5mai-ds-r1:freeNot in the catalogue
Pricing
Input$10.00 / 1M$1.25 / 1M$0.15 / 1M—
Output$50.00 / 1M$4.25 / 1M$1.50 / 1M—
Cache Write (5m)$10.00 / 1M$1.25 / 1M$0.15 / 1M—
Cache Write (1h)$10.00 / 1M$1.25 / 1M$0.15 / 1M—
Cache Read$10.00 / 1M$1.25 / 1M$0.15 / 1M—
Web Search$0 / 1M$0 / 1M$0 / 1M—
Context
Max context1M1M36.9K—
Max outputN/AN/AN/A—
Capabilities
VisionYesYesNo—
Function CallingYesYesNo—
JSON ModeYesYesNo—
StreamingYesYesYes—
Catalogue
ProviderOpenAIMetaPerceptron—
Categorychatchatchat—
Charge typePay As You GoPay As You GoPay As You Go—
Released——2026-09-25—
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.Muse Spark Open is an open-weight, coding-optimized model designed for agentic software engineering workflows. It delivers strong first-attempt accuracy, reliable tool calling, and deep codebase understanding, enabling effective development across real-world repositories. Optimized for autonomous coding agents, complex code navigation, and tool-driven development, Muse Spark Open is well suited for software engineering automation, debugging, code generation, and multi-step coding workflows where accuracy and reliable execution are essential.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.—