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Google: Gemini 3.5 Flash vs Google: Gemini 3.1 Flash Lite

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-12.

Google: Gemini 3.5 Flash Google: Gemini 3.1 Flash Lite
Vendorgooglegoogle
Quality Score100100
Benchmark Score88.3-
Input Price$1.50/M$0.25/M
Output Price$9.00/M$1.50/M
Context Window1,048,5761,048,576
Max Output65,53665,536
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio✓✓
Benchmark Scores
ai_index91.3-
ai_index_agentic100.0-
ai_index_coding74.2-

Who wins by task?

TaskGoogle: Gemini 3.5 FlashGoogle: Gemini 3.1 Flash Lite
SQL Generation 170 133
Code Review 167 132
Code Completion 119 131
Code Refactoring 164 136
Bug Fixing 183 136
Unit Test Generation 153 124
Code Documentation 142 131
Regex Writing 136 119
CI/CD Pipelines 144 120
Frontend Component Design 146 122
Data Analysis 172 124
CSV / Spreadsheet Cleanup 150 133
ETL Scripting 154 128
JSON Extraction 136 131
Bulk Data Labeling 123 129
OCR / Document Parsing 145 131
Table Extraction from PDFs 145 131
Long-Document Summarization 160 137
Short-Form Summarization 122 123
Blog Post Writing 140 121

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

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