head-to-head

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

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

	NVIDIA: Nemotron 3 Nano Omni (free)	SpaceXAI: Grok 4.20
Vendor	nvidia	x-ai
Quality Score	100	100
Benchmark Score	-	50.6
Input Price	Free	$1.25/M
Output Price	Free	$2.50/M
Context Window	256,000	2,000,000
Max Output	65,536	1,800,000
Tool Calling	✓	✓
Structured Output	-	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	-
Benchmark Scores
ai_index	-	42.3
eqbench	-	55.8

Who wins by task?

Task	NVIDIA: Nemotron 3 Nano Omni (free)	SpaceXAI: Grok 4.20
SQL Generation	123	142
Code Review	122	146
Code Completion	129	121
Code Refactoring	123	150
Bug Fixing	130	150
Unit Test Generation	113	133
Code Documentation	126	139
Regex Writing	120	125
CI/CD Pipelines	113	129
Frontend Component Design	118	129
Data Analysis	120	133
CSV / Spreadsheet Cleanup	116	138
ETL Scripting	118	139
JSON Extraction	120	123
Bulk Data Labeling	126	120
OCR / Document Parsing	120	134
Table Extraction from PDFs	120	134
Long-Document Summarization	129	151
Short-Form Summarization	124	118
Blog Post Writing	119	130

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