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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. Grok 4.7SpaceXAIRemove
  3. GPT-6 Luna ProOpenAIRemove
nemotron-3.5-lightning:free vs grok-4.7 vs gpt-6-luna-pro
AttributeNemotron 3.5 Lightning (Free)nemotron-3.5-lightning:freeGrok 4.7grok-4.7GPT-6 Luna Progpt-6-luna-pro
Pricing
Input$0 / 1M$1.60 / 1M$0.10 / 1M
Output$0 / 1M$4.80 / 1M$0.50 / 1M
Cache Write$0 / 1M——
Cache Read$0 / 1M$1.60 / 1M$0.10 / 1M
Cache Write (5m)—$1.60 / 1M$0.10 / 1M
Cache Write (1h)—$1.60 / 1M$0.10 / 1M
Web Search—$0 / 1M$0 / 1M
Context
Max context1M500K1.1M
Max outputN/AN/AN/A
Capabilities
VisionYesYesYes
Function CallingYesYesYes
JSON ModeYesYesYes
StreamingYesYesYes
Catalogue
ProviderNVIDIASpaceXAIOpenAI
Categorychatchatchat
Charge typeFreePay As You GoPay As You Go
Released———
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.Grok 4.7 is SpaceXAI's flagship model for coding, agentic workflows, and professional knowledge work, succeeding Grok 4.6. It is particularly strong at long-running software engineering, self-verification, and long-context execution, while improving capabilities in document drafting, presentations, and other professional tasks. Trained with extended reinforcement learning focused on multi-hour problems, Grok 4.7 is optimized for sustained, complex task execution and natively supports the Grok Bot harness for conversational workflows. It also introduces an enhanced safeguard stack designed to combine strong jailbreak resistance with low refusal rates for legitimate technical work. Reported benchmark results use xhigh reasoning effort.GPT-6 Luna Pro uses the same underlying model as GPT-6 Luna, but runs with reasoning.mode set to pro for higher-quality responses on complex tasks. It combines Luna's speed and cost efficiency with deeper reasoning and more reliable multi-step execution, making it well suited for advanced coding, computer use, and agentic workflows where higher solution quality is needed without moving to a larger GPT-6 tier.