head-to-head

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

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-09-23.

	Thinking Machines: Inkling Small	OpenAI: GPT-5.6 Terra
Vendor	thinkingmachines	openai
Quality Score	100	100
Benchmark Score	44.5	71.1
Input Price	$0.45/M	$2.00/M
Output Price	$1.20/M	$12.00/M
Context Window	1,048,576	1,050,000
Max Output	262,144	128,000
Tool Calling	✓	✓
Structured Output	-	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	-
Benchmark Scores
ai_index	45.8	69.4

Who wins by task?

Task	Thinking Machines: Inkling Small	OpenAI: GPT-5.6 Terra
SQL Generation	131	140
Code Review	136	145
Code Completion	132	118
Code Refactoring	139	147
Bug Fixing	144	149
Unit Test Generation	121	132
Code Documentation	135	135
Regex Writing	124	124
CI/CD Pipelines	121	128
Frontend Component Design	123	130
Data Analysis	126	134
CSV / Spreadsheet Cleanup	123	135
ETL Scripting	130	137
JSON Extraction	119	121
Bulk Data Labeling	125	117
OCR / Document Parsing	125	134
Table Extraction from PDFs	125	134
Long-Document Summarization	145	147
Short-Form Summarization	126	116
Blog Post Writing	127	128

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