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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 2026-09-23.

Anthropic: Claude Sonnet 5 SpaceXAI: Grok Build 0.1
Vendoranthropicx-ai
Quality Score100100
Benchmark Score63.9-
Input Price$2.00/M$1.00/M
Output Price$10.00/M$2.00/M
Context Window1,000,000256,000
Max Output128,000230,400
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index63.0-

Who wins by task?

TaskAnthropic: Claude Sonnet 5SpaceXAI: Grok Build 0.1
SQL Generation 140 130
Code Review 144 126
Code Completion 118 116
Code Refactoring 146 127
Bug Fixing 148 130
Unit Test Generation 131 121
Code Documentation 135 125
Regex Writing 123 119
CI/CD Pipelines 127 117
Frontend Component Design 129 122
Data Analysis 133 124
CSV / Spreadsheet Cleanup 135 127
ETL Scripting 136 122
JSON Extraction 121 123
Bulk Data Labeling 118 121
OCR / Document Parsing 134 128
Table Extraction from PDFs 134 128
Long-Document Summarization 146 129
Short-Form Summarization 116 115
Blog Post Writing 128 118

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

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