xAI's smartest model, with frontier performance on coding, knowledge work, and STEM.
NVIDIA's open 30B MoE built for high-throughput agentic workloads.
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Both Grok 4.6 and Nemotron 3.5 Lightning are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Nemotron 3.5 Lightning has a lower blended cost. Grok 4.6: $2.00 input / $6.00 output. Nemotron 3.5 Lightning: $0.08 input / $0.20 output.
Grok 4.6 has a larger context window: Grok 4.6 supports 500K tokens vs Nemotron 3.5 Lightning at 262K tokens.
Grok 4.6 supports vision/image input, but Nemotron 3.5 Lightning does not.
Key differences: Nemotron 3.5 Lightning is significantly cheaper; only Grok 4.6 supports vision input. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Grok 4.6 and Nemotron 3.5 Lightning for free on idapt.app to see which performs better for your specific needs.