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Thinking Machines: Inkling vs xAI: Grok 4.20

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-18.

Thinking Machines: Inkling xAI: Grok 4.20
Vendorthinkingmachinesx-ai
Quality Score100100
Benchmark Score-61.5
Input Price$1.00/M$1.25/M
Output Price$4.05/M$2.50/M
Context Window1,048,5762,000,000
Max Output--
Tool Calling✓✓
Structured Output-✓
Reasoning Mode✓✓
Vision✓✓
Audio✓-
Benchmark Scores
ai_index-61.0
eqbench-55.8

Who wins by task?

TaskThinking Machines: InklingxAI: Grok 4.20
SQL Generation 125 144
Code Review 128 150
Code Completion 119 122
Code Refactoring 132 153
Bug Fixing 136 154
Unit Test Generation 116 135
Code Documentation 131 141
Regex Writing 119 127
CI/CD Pipelines 116 131
Frontend Component Design 118 131
Data Analysis 120 136
CSV / Spreadsheet Cleanup 121 139
ETL Scripting 124 142
JSON Extraction 111 123
Bulk Data Labeling 116 120
OCR / Document Parsing 123 135
Table Extraction from PDFs 123 135
Long-Document Summarization 137 154
Short-Form Summarization 115 119
Blog Post Writing 121 132

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

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