head-to-head

OpenAI: GPT-5.6 Sol Pro (batch) vs xAI: Grok Latest

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

OpenAI: GPT-5.6 Sol Pro (batch) xAI: Grok Latest
Vendoropenai~x-ai
Quality Score100100
Benchmark Score-10.6
Input Price$2.50/M$2.00/M
Output Price$15.00/M$6.00/M
Context Window1,050,000500,000
Max Output128,000-
Tool Calling
Structured Output
Reasoning Mode
Vision
Audio--
Benchmark Scores
ai_index-12.0

Who wins by task?

TaskOpenAI: GPT-5.6 Sol Pro (batch)xAI: Grok Latest
SQL Generation 132 134
Code Review 132 134
Code Completion 116 118
Code Refactoring 136 137
Bug Fixing 136 138
Unit Test Generation 124 125
Code Documentation 128 131
Regex Writing 116 119
CI/CD Pipelines 120 121
Frontend Component Design 122 123
Data Analysis 124 125
CSV / Spreadsheet Cleanup 132 133
ETL Scripting 128 129
JSON Extraction 120 122
Bulk Data Labeling 116 119
OCR / Document Parsing 131 131
Table Extraction from PDFs 131 131
Long-Document Summarization 136 139
Short-Form Summarization 112 115
Blog Post Writing 120 122

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

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