head-to-head

DeepSeek: DeepSeek V4.1 Flash vs Google: Gemini 3.5 Flash Lite (batch)

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

	DeepSeek: DeepSeek V4.1 Flash	Google: Gemini 3.5 Flash Lite (batch)
Vendor	deepseek	google
Quality Score	100	100
Benchmark Score	66.3	34.2
Input Price	$0.15/M	$0.15/M
Output Price	$0.60/M	$1.25/M
Context Window	1,048,576	1,048,576
Max Output	384,000	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓
Benchmark Scores
ai_index	65.1	36.6

Who wins by task?

Task	DeepSeek: DeepSeek V4.1 Flash	Google: Gemini 3.5 Flash Lite (batch)
SQL Generation	141	138
Code Review	144	139
Code Completion	133	132
Code Refactoring	146	141
Bug Fixing	148	143
Unit Test Generation	131	128
Code Documentation	137	135
Regex Writing	126	123
CI/CD Pipelines	127	124
Frontend Component Design	129	126
Data Analysis	133	129
CSV / Spreadsheet Cleanup	136	135
ETL Scripting	137	133
JSON Extraction	131	131
Bulk Data Labeling	129	129
OCR / Document Parsing	134	132
Table Extraction from PDFs	134	132
Long-Document Summarization	148	143
Short-Form Summarization	127	125
Blog Post Writing	129	126

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