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Thinking Machines: Inkling vs OpenAI: GPT-5.6 Terra Pro

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-04.

Thinking Machines: Inkling OpenAI: GPT-5.6 Terra Pro
Vendorthinkingmachinesopenai
Quality Score100100
Benchmark Score70.1-
Input Price$1.00/M$2.00/M
Output Price$4.05/M$12.00/M
Context Window1,048,5761,050,000
Max Output471,859128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓-
Benchmark Scores
ai_index69.8-
ai_index_agentic56.3-
ai_index_coding85.9-

Who wins by task?

TaskThinking Machines: InklingOpenAI: GPT-5.6 Terra Pro
SQL Generation 164 132
Code Review 160 132
Code Completion 120 117
Code Refactoring 158 136
Bug Fixing 171 136
Unit Test Generation 148 124
Code Documentation 140 129
Regex Writing 132 117
CI/CD Pipelines 140 120
Frontend Component Design 142 122
Data Analysis 161 124
CSV / Spreadsheet Cleanup 150 132
ETL Scripting 149 128
JSON Extraction 137 121
Bulk Data Labeling 125 117
OCR / Document Parsing 144 131
Table Extraction from PDFs 144 131
Long-Document Summarization 155 136
Short-Form Summarization 121 113
Blog Post Writing 136 120

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

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