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Anthropic: Claude Sonnet 5 vs SpaceXAI: Grok Build 0.1

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-13.

Anthropic: Claude Sonnet 5 SpaceXAI: Grok Build 0.1
Vendoranthropicx-ai
Quality Score100100
Benchmark Score91.6-
Input Price$2.00/M$1.00/M
Output Price$10.00/M$2.00/M
Context Window1,000,000256,000
Max Output128,000-
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index91.2-
ai_index_agentic82.0-
ai_index_coding100.0-

Who wins by task?

TaskAnthropic: Claude Sonnet 5SpaceXAI: Grok Build 0.1
SQL Generation 172 130
Code Review 168 126
Code Completion 119 116
Code Refactoring 165 127
Bug Fixing 182 130
Unit Test Generation 155 121
Code Documentation 142 125
Regex Writing 135 119
CI/CD Pipelines 145 117
Frontend Component Design 147 122
Data Analysis 172 124
CSV / Spreadsheet Cleanup 153 127
ETL Scripting 155 122
JSON Extraction 139 123
Bulk Data Labeling 124 121
OCR / Document Parsing 147 128
Table Extraction from PDFs 147 128
Long-Document Summarization 160 129
Short-Form Summarization 122 115
Blog Post Writing 140 118

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

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