head-to-head

DeepSeek: DeepSeek V4 Flash Latest vs Anthropic: Claude Opus 5 (batch)

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

	DeepSeek: DeepSeek V4 Flash Latest	Anthropic: Claude Opus 5 (batch)
Vendor	~deepseek	anthropic
Quality Score	99	100
Benchmark Score	-	87.3
Input Price	$0.03/M	$2.50/M
Output Price	$0.80/M	$12.50/M
Context Window	1,310,720	1,000,000
Max Output	943,718	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	-	✓
Audio	-	-
Benchmark Scores
ai_index	-	83.8

Who wins by task?

Task	DeepSeek: DeepSeek V4 Flash Latest	Anthropic: Claude Opus 5 (batch)
SQL Generation	133	142
Code Review	131	147
Code Completion	131	118
Code Refactoring	135	149
Bug Fixing	135	151
Unit Test Generation	123	134
Code Documentation	131	136
Regex Writing	119	125
CI/CD Pipelines	119	130
Frontend Component Design	91	132
Data Analysis	123	136
CSV / Spreadsheet Cleanup	133	135
ETL Scripting	127	139
JSON Extraction	131	121
Bulk Data Labeling	129	117
OCR / Document Parsing	85	135
Table Extraction from PDFs	85	135
Long-Document Summarization	137	149
Short-Form Summarization	123	117
Blog Post Writing	121	130

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