head-to-head

Google: Gemma 4 31B (free) vs Google: Gemini 3.1 Flash Lite Preview

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

	Google: Gemma 4 31B (free)	Google: Gemini 3.1 Flash Lite Preview
Vendor	google	google
Quality Score	100	100
Benchmark Score	53.7	-
Input Price	Free	$0.25/M
Output Price	Free	$1.50/M
Context Window	262,144	1,048,576
Max Output	32,768	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓
Benchmark Scores
ai_index	31.3	-
eqbench	70.8	-

Who wins by task?

Task	Google: Gemma 4 31B (free)	Google: Gemini 3.1 Flash Lite Preview
SQL Generation	140	133
Code Review	140	132
Code Completion	132	131
Code Refactoring	141	136
Bug Fixing	144	136
Unit Test Generation	130	124
Code Documentation	135	131
Regex Writing	126	119
CI/CD Pipelines	126	120
Frontend Component Design	128	122
Data Analysis	132	124
CSV / Spreadsheet Cleanup	134	133
ETL Scripting	133	128
JSON Extraction	132	131
Bulk Data Labeling	130	129
OCR / Document Parsing	131	131
Table Extraction from PDFs	131	131
Long-Document Summarization	143	137
Short-Form Summarization	127	123
Blog Post Writing	128	121

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