head-to-head

Thinking Machines: Inkling Small vs OpenAI: GPT-5.6 Luna (batch)

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

	Thinking Machines: Inkling Small	OpenAI: GPT-5.6 Luna (batch)
Vendor	thinkingmachines	openai
Quality Score	100	100
Benchmark Score	69.1	88.2
Input Price	$0.45/M	$0.10/M
Output Price	$1.20/M	$0.60/M
Context Window	524,288	1,050,000
Max Output	262,144	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	-
Benchmark Scores
ai_index	67.9	86.3
ai_index_agentic	52.6	77.4
ai_index_coding	87.4	100.0

Who wins by task?

Task	Thinking Machines: Inkling Small	OpenAI: GPT-5.6 Luna (batch)
SQL Generation	164	172
Code Review	159	167
Code Completion	133	133
Code Refactoring	158	164
Bug Fixing	170	180
Unit Test Generation	148	154
Code Documentation	141	143
Regex Writing	133	137
CI/CD Pipelines	139	144
Frontend Component Design	141	146
Data Analysis	160	171
CSV / Spreadsheet Cleanup	151	154
ETL Scripting	149	154
JSON Extraction	146	149
Bulk Data Labeling	134	135
OCR / Document Parsing	144	146
Table Extraction from PDFs	144	146
Long-Document Summarization	155	160
Short-Form Summarization	130	132
Blog Post Writing	136	140

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