head-to-head

OpenAI: GPT Luna Latest vs DeepSeek: DeepSeek V4 Flash Latest

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

	OpenAI: GPT Luna Latest	DeepSeek: DeepSeek V4 Flash Latest
Vendor	~openai	~deepseek
Quality Score	100	99
Input Price	$0.10/M	$0.03/M
Output Price	$0.50/M	$0.80/M
Context Window	1,050,000	1,310,720
Max Output	128,000	943,718
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	-
Audio	-	-

Who wins by task?

Task	OpenAI: GPT Luna Latest	DeepSeek: DeepSeek V4 Flash Latest
SQL Generation	133	133
Code Review	132	131
Code Completion	131	131
Code Refactoring	136	135
Bug Fixing	136	135
Unit Test Generation	124	123
Code Documentation	131	131
Regex Writing	119	119
CI/CD Pipelines	120	119
Frontend Component Design	122	91
Data Analysis	124	123
CSV / Spreadsheet Cleanup	133	133
ETL Scripting	128	127
JSON Extraction	131	131
Bulk Data Labeling	129	129
OCR / Document Parsing	131	85
Table Extraction from PDFs	131	85
Long-Document Summarization	137	137
Short-Form Summarization	123	123
Blog Post Writing	121	121

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