head-to-head

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

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

	Thinking Machines: Inkling (batch)	OpenAI: GPT-5.6 Luna
Vendor	thinkingmachines	openai
Quality Score	100	100
Benchmark Score	70.5	88.2
Input Price	$0.50/M	$0.10/M
Output Price	$2.02/M	$0.60/M
Context Window	524,288	1,050,000
Max Output	-	128,000
Tool Calling	✓	✓
Structured Output	-	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	-
Benchmark Scores
ai_index	69.8	86.3
ai_index_agentic	56.3	77.4
ai_index_coding	85.9	100.0

Who wins by task?

Task	Thinking Machines: Inkling (batch)	OpenAI: GPT-5.6 Luna
SQL Generation	156	172
Code Review	156	167
Code Completion	132	133
Code Refactoring	154	164
Bug Fixing	171	180
Unit Test Generation	140	154
Code Documentation	141	143
Regex Writing	133	137
CI/CD Pipelines	136	144
Frontend Component Design	138	146
Data Analysis	157	171
CSV / Spreadsheet Cleanup	139	154
ETL Scripting	145	154
JSON Extraction	134	149
Bulk Data Labeling	130	135
OCR / Document Parsing	136	146
Table Extraction from PDFs	136	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 →