head-to-head

SpaceXAI: Grok 4.5 vs Anthropic: Claude Sonnet Latest

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

	SpaceXAI: Grok 4.5	Anthropic: Claude Sonnet Latest
Vendor	x-ai	~anthropic
Quality Score	100	100
Benchmark Score	65.0	-
Input Price	$2.00/M	$2.00/M
Output Price	$6.00/M	$10.00/M
Context Window	500,000	1,000,000
Max Output	450,000	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	64.0	-

Who wins by task?

Task	SpaceXAI: Grok 4.5	Anthropic: Claude Sonnet Latest
SQL Generation	140	132
Code Review	144	132
Code Completion	119	117
Code Refactoring	146	136
Bug Fixing	148	136
Unit Test Generation	131	124
Code Documentation	136	129
Regex Writing	124	117
CI/CD Pipelines	127	120
Frontend Component Design	129	122
Data Analysis	133	124
CSV / Spreadsheet Cleanup	135	132
ETL Scripting	137	128
JSON Extraction	122	121
Bulk Data Labeling	119	118
OCR / Document Parsing	134	131
Table Extraction from PDFs	134	131
Long-Document Summarization	147	136
Short-Form Summarization	117	113
Blog Post Writing	128	120

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