head-to-head

xAI: Grok 4.3 vs NVIDIA: Nemotron 3 Nano Omni (free)

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-05-02.

	xAI: Grok 4.3	NVIDIA: Nemotron 3 Nano Omni (free)
Vendor	x-ai	nvidia
Quality Score	100	100
Input Price	$1.25/M	Free
Output Price	$2.50/M	Free
Context Window	1,000,000	256,000
Max Output	-	65,536
Tool Calling	✓	✓
Structured Output	✓	-
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓

Who wins by task?

Task	xAI: Grok 4.3	NVIDIA: Nemotron 3 Nano Omni (free)
SQL Generation	133	123
Code Review	132	122
Code Completion	119	129
Code Refactoring	136	123
Bug Fixing	136	130
Unit Test Generation	124	113
Code Documentation	131	126
Regex Writing	119	120
CI/CD Pipelines	120	113
Frontend Component Design	122	118
Data Analysis	124	120
CSV / Spreadsheet Cleanup	133	116
ETL Scripting	128	118
JSON Extraction	123	120
Bulk Data Labeling	120	126
OCR / Document Parsing	131	120
Table Extraction from PDFs	131	120
Long-Document Summarization	137	129
Short-Form Summarization	115	124
Blog Post Writing	121	119

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