head-to-head

DeepSeek: DeepSeek V4 Flash Vision Exp vs Anthropic: Claude Sonnet 5

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-08-22.

	DeepSeek: DeepSeek V4 Flash Vision Exp	Anthropic: Claude Sonnet 5
Vendor	deepseek	anthropic
Quality Score	100	100
Benchmark Score	-	91.6
Input Price	$0.22/M	$2.00/M
Output Price	$0.66/M	$10.00/M
Context Window	1,048,576	1,000,000
Max Output	384,000	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	-	91.2
ai_index_agentic	-	82.0
ai_index_coding	-	100.0

Who wins by task?

Task	DeepSeek: DeepSeek V4 Flash Vision Exp	Anthropic: Claude Sonnet 5
SQL Generation	133	172
Code Review	132	168
Code Completion	131	119
Code Refactoring	136	165
Bug Fixing	136	182
Unit Test Generation	124	155
Code Documentation	131	142
Regex Writing	119	135
CI/CD Pipelines	120	145
Frontend Component Design	122	147
Data Analysis	124	172
CSV / Spreadsheet Cleanup	133	153
ETL Scripting	128	155
JSON Extraction	131	139
Bulk Data Labeling	129	124
OCR / Document Parsing	131	147
Table Extraction from PDFs	131	147
Long-Document Summarization	137	160
Short-Form Summarization	123	122
Blog Post Writing	121	140

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