head-to-head

xAI: Grok 4.5 vs NVIDIA: Nemotron 3 Nano Omni (free)

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-10.

	xAI: Grok 4.5	NVIDIA: Nemotron 3 Nano Omni (free)
Vendor	x-ai	nvidia
Quality Score	100	100
Benchmark Score	91.8	-
Input Price	$2.00/M	Free
Output Price	$6.00/M	Free
Context Window	500,000	256,000
Max Output	-	65,536
Tool Calling	✓	✓
Structured Output	✓	-
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓
Benchmark Scores
ai_index	88.8	-
ai_index_agentic	75.4	-
ai_index_coding	100.0	-

Who wins by task?

Task	xAI: Grok 4.5	NVIDIA: Nemotron 3 Nano Omni (free)
SQL Generation	171	123
Code Review	167	122
Code Completion	120	129
Code Refactoring	164	123
Bug Fixing	180	130
Unit Test Generation	154	113
Code Documentation	142	126
Regex Writing	135	120
CI/CD Pipelines	144	113
Frontend Component Design	146	118
Data Analysis	170	120
CSV / Spreadsheet Cleanup	154	116
ETL Scripting	154	118
JSON Extraction	139	120
Bulk Data Labeling	125	126
OCR / Document Parsing	146	120
Table Extraction from PDFs	146	120
Long-Document Summarization	159	129
Short-Form Summarization	123	124
Blog Post Writing	140	119

Scores reflect capability match + benchmark data + pricing for each task. Methodology →