head-to-head

NVIDIA: Nemotron 3 Nano Omni (free) vs xAI: Grok 4.20

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-22.

	NVIDIA: Nemotron 3 Nano Omni (free)	xAI: Grok 4.20
Vendor	nvidia	x-ai
Quality Score	100	100
Benchmark Score	-	61.5
Input Price	Free	$1.25/M
Output Price	Free	$2.50/M
Context Window	256,000	2,000,000
Max Output	65,536	-
Tool Calling	✓	✓
Structured Output	-	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	-
Benchmark Scores
ai_index	-	61.0
eqbench	-	55.8

Who wins by task?

Task	NVIDIA: Nemotron 3 Nano Omni (free)	xAI: Grok 4.20
SQL Generation	123	144
Code Review	122	150
Code Completion	129	122
Code Refactoring	123	153
Bug Fixing	130	154
Unit Test Generation	113	135
Code Documentation	126	141
Regex Writing	120	127
CI/CD Pipelines	113	131
Frontend Component Design	118	131
Data Analysis	120	136
CSV / Spreadsheet Cleanup	116	139
ETL Scripting	118	142
JSON Extraction	120	123
Bulk Data Labeling	126	120
OCR / Document Parsing	120	135
Table Extraction from PDFs	120	135
Long-Document Summarization	129	154
Short-Form Summarization	124	119
Blog Post Writing	119	132

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