head-to-head

OpenAI: GPT-6 Luna Pro vs DeepSeek: DeepSeek V4 Flash Vision Exp

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

	OpenAI: GPT-6 Luna Pro	DeepSeek: DeepSeek V4 Flash Vision Exp
Vendor	openai	deepseek
Quality Score	100	100
Benchmark Score	-	57.7
Input Price	$0.10/M	$0.22/M
Output Price	$0.50/M	$0.66/M
Context Window	1,050,000	1,048,576
Max Output	128,000	943,718
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	-	57.5

Who wins by task?

Task	OpenAI: GPT-6 Luna Pro	DeepSeek: DeepSeek V4 Flash Vision Exp
SQL Generation	133	140
Code Review	132	142
Code Completion	131	133
Code Refactoring	136	145
Bug Fixing	136	146
Unit Test Generation	124	130
Code Documentation	131	137
Regex Writing	119	125
CI/CD Pipelines	120	126
Frontend Component Design	122	128
Data Analysis	124	132
CSV / Spreadsheet Cleanup	133	136
ETL Scripting	128	136
JSON Extraction	131	131
Bulk Data Labeling	129	129
OCR / Document Parsing	131	133
Table Extraction from PDFs	131	133
Long-Document Summarization	137	147
Short-Form Summarization	123	126
Blog Post Writing	121	128

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