Skip to content

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 OSS 120BOpenAIRemove
  2. Muse Spark 1.3MetaRemove
gpt-oss-120b vs muse-spark-1.3
AttributeGPT OSS 120Bgpt-oss-120bMuse Spark 1.3muse-spark-1.3
Pricing
Input$0.15 / 1M$1.25 / 1M
Output$0.75 / 1M$4.25 / 1M
Cache Write (5m)$0.15 / 1M$1.25 / 1M
Cache Write (1h)$0.15 / 1M$1.25 / 1M
Cache Read$0.15 / 1M$1.25 / 1M
Web Search$0 / 1M$0 / 1M
Context
Max context131.1K1M
Max outputN/AN/A
Capabilities
VisionNoYes
Function CallingYesYes
JSON ModeYesYes
StreamingYesYes
Catalogue
ProviderOpenAIMeta
Categorychatchat
Charge typePay As You GoPay As You Go
Released
Description
Summarygpt-oss-120b is an open-weight 117B-parameter MoE model from OpenAI, built for advanced reasoning and production workloads. Only about 5.1B parameters are active per step, and it’s optimized to run on a single H100 using MXFP4 quantization. It supports adjustable reasoning depth, full chain-of-thought, and native agent features like tool use, function calling, browsing, and structured outputs.Muse 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.