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SpaceXAI: Grok 4.6 vs Anthropic: Claude Opus 4.8 (batch)

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

SpaceXAI: Grok 4.6 Anthropic: Claude Opus 4.8 (batch)
Vendorx-aianthropic
Quality Score100100
Benchmark Score99.894.7
Input Price$2.00/M$2.50/M
Output Price$6.00/M$12.50/M
Context Window500,0001,000,000
Max Output-128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index100.094.6
ai_index_agentic96.881.5
ai_index_coding100.0100.0
eqbench-83.3

Who wins by task?

TaskSpaceXAI: Grok 4.6Anthropic: Claude Opus 4.8 (batch)
SQL Generation 175 178
Code Review 171 179
Code Completion 120 121
Code Refactoring 167 176
Bug Fixing 187 193
Unit Test Generation 157 161
Code Documentation 144 148
Regex Writing 138 138
CI/CD Pipelines 147 151
Frontend Component Design 149 151
Data Analysis 177 178
CSV / Spreadsheet Cleanup 155 158
ETL Scripting 157 164
JSON Extraction 140 138
Bulk Data Labeling 125 123
OCR / Document Parsing 147 149
Table Extraction from PDFs 147 149
Long-Document Summarization 163 171
Short-Form Summarization 124 123
Blog Post Writing 143 146

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

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