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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. Muse Spark 1.3MetaRemove
  2. GPT-5.6 Luna ProOpenAIRemove
muse-spark-1.3 vs gpt-5.6-luna-pro
AttributeMuse Spark 1.3muse-spark-1.3GPT-5.6 Luna Progpt-5.6-luna-pro
Pricing
Input$1.25 / 1M$0.20 / 1M
Output$4.25 / 1M$1.20 / 1M
Cache Write (5m)$1.25 / 1M$0.20 / 1M
Cache Write (1h)$1.25 / 1M$0.20 / 1M
Cache Read$1.25 / 1M$0.20 / 1M
Web Search$0 / 1M$0 / 1M
Context
Max context1M1M
Max outputN/AN/A
Capabilities
VisionYesYes
Function CallingYesYes
JSON ModeYesYes
StreamingYesYes
Catalogue
ProviderMetaOpenAI
Categorychatchat
Charge typePay As You GoPay As You Go
Released
Description
SummaryMuse Spark 1.3 is Meta's multimodal reasoning model designed for long-running agentic, multi-agent, and coding workflows. It maintains context and information across extended tasks, enabling reliable execution in complex, multi-step environments. The model is optimized to resolve conflicting information, seek clarification or confirmation when necessary, and execute concisely, making it well suited for autonomous agents, collaborative multi-agent systems, and long-horizon software engineering workflows.GPT-5.6 Luna Pro uses the same underlying model as GPT-5.6 Luna, but runs with reasoning.mode set to pro to deliver higher-quality responses on complex tasks. It is optimized for deeper reasoning, advanced coding, and multi-step agentic workflows, offering improved accuracy and solution quality while retaining the efficiency and scalability of the Luna tier.