head-to-head

Anthropic: Claude Haiku Latest vs SpaceXAI: Grok 4.20

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

	Anthropic: Claude Haiku Latest	SpaceXAI: Grok 4.20
Vendor	~anthropic	x-ai
Quality Score	100	100
Benchmark Score	-	50.6
Input Price	$1.00/M	$1.25/M
Output Price	$5.00/M	$2.50/M
Context Window	200,000	2,000,000
Max Output	64,000	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	Anthropic: Claude Haiku Latest	SpaceXAI: Grok 4.20
SQL Generation	129	142
Code Review	124	146
Code Completion	114	121
Code Refactoring	124	150
Bug Fixing	128	150
Unit Test Generation	120	133
Code Documentation	122	139
Regex Writing	118	125
CI/CD Pipelines	116	129
Frontend Component Design	122	129
Data Analysis	124	133
CSV / Spreadsheet Cleanup	125	138
ETL Scripting	120	139
JSON Extraction	122	123
Bulk Data Labeling	120	120
OCR / Document Parsing	127	134
Table Extraction from PDFs	127	134
Long-Document Summarization	125	151
Short-Form Summarization	114	118
Blog Post Writing	117	130

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