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Grok 4.3 vs Nemotron 3 Nano

xAI vs NVIDIA — benchmarks, pricing, and capabilities side by side.

Grok 4.3Nemotron 3 Nano
Intelligence index90.1
DeveloperxAINVIDIA
TypeLLMLLM
AccessAPI onlyOpen weights
Context window1,000,000 tokens1,000,000 tokens
Input price$1.25 / 1M
Output price$2.50 / 1M
Speed88 tok/s
ReleasedMay 6, 2026December 15, 2025
Parameters31.6B (3.6B active)
Input modalitiesText, ImageText
Output modalitiesTextText