head-to-head

Qwen: Qwen3.8 Flash vs DeepSeek: DeepSeek V4 Flash Vision Exp

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-27.

	Qwen: Qwen3.8 Flash	DeepSeek: DeepSeek V4 Flash Vision Exp
Vendor	qwen	deepseek
Quality Score	100	100
Benchmark Score	-	90.6
Input Price	$0.16/M	$0.22/M
Output Price	$0.47/M	$0.66/M
Context Window	1,000,000	1,048,576
Max Output	131,072	384,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	-	84.9
ai_index_agentic	-	87.2
ai_index_coding	-	100.0

Who wins by task?

Task	Qwen: Qwen3.8 Flash	DeepSeek: DeepSeek V4 Flash Vision Exp
SQL Generation	133	173
Code Review	132	167
Code Completion	131	133
Code Refactoring	136	164
Bug Fixing	136	182
Unit Test Generation	124	155
Code Documentation	131	144
Regex Writing	119	137
CI/CD Pipelines	120	145
Frontend Component Design	122	147
Data Analysis	124	172
CSV / Spreadsheet Cleanup	133	154
ETL Scripting	128	155
JSON Extraction	131	149
Bulk Data Labeling	129	135
OCR / Document Parsing	131	147
Table Extraction from PDFs	131	147
Long-Document Summarization	137	160
Short-Form Summarization	123	132
Blog Post Writing	121	141

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