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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. Nemotron 3.5 Lightning (Free)NVIDIARemove
  2. Perceptron Mk1.5PerceptronRemove
  3. Muse Spark OpenMetaRemove
nemotron-3.5-lightning:free vs perceptron-mk1.5 vs muse-spark-open
AttributeNemotron 3.5 Lightning (Free)nemotron-3.5-lightning:freePerceptron Mk1.5perceptron-mk1.5Muse Spark Openmuse-spark-open
Pricing
Input$0 / 1M$0.15 / 1M$1.25 / 1M
Output$0 / 1M$1.50 / 1M$4.25 / 1M
Cache Write$0 / 1M——
Cache Read$0 / 1M$0.15 / 1M$1.25 / 1M
Cache Write (5m)—$0.15 / 1M$1.25 / 1M
Cache Write (1h)—$0.15 / 1M$1.25 / 1M
Web Search—$0 / 1M$0 / 1M
Context
Max context1M36.9K1M
Max outputN/AN/AN/A
Capabilities
VisionYesNoYes
Function CallingYesNoYes
JSON ModeYesNoYes
StreamingYesYesYes
Catalogue
ProviderNVIDIAPerceptronMeta
Categorychatchatchat
Charge typeFreePay As You GoPay As You Go
Released—2026-09-25—
Description
SummaryNVIDIA Nemotron 3.5 Lightning is an open Mixture-of-Experts (MoE) model with 30B total parameters and 3B active per token, optimized for high-throughput agentic workloads and efficient inference. Its lightweight active compute and open design make it well suited for specialized agents, domain-specific customization, and scalable production deployments where speed, cost efficiency, and adaptability are key.Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.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.