head-to-head

OpenAI: GPT-5.4 Mini vs Google: Gemini 3.1 Flash Lite Preview

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-18.

	OpenAI: GPT-5.4 Mini	Google: Gemini 3.1 Flash Lite Preview
Vendor	openai	google
Quality Score	100	100
Benchmark Score	81.0	-
Input Price	$0.75/M	$0.25/M
Output Price	$4.50/M	$1.50/M
Context Window	400,000	1,048,576
Max Output	128,000	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓
Benchmark Scores
ai_index	66.0	-
ai_index_agentic	97.1	-
ai_index_coding	84.9	-

Who wins by task?

Task	OpenAI: GPT-5.4 Mini	Google: Gemini 3.1 Flash Lite Preview
SQL Generation	169	133
Code Review	163	132
Code Completion	132	131
Code Refactoring	161	136
Bug Fixing	179	136
Unit Test Generation	151	124
Code Documentation	141	131
Regex Writing	134	119
CI/CD Pipelines	142	120
Frontend Component Design	144	122
Data Analysis	169	124
CSV / Spreadsheet Cleanup	151	133
ETL Scripting	151	128
JSON Extraction	146	131
Bulk Data Labeling	133	129
OCR / Document Parsing	144	131
Table Extraction from PDFs	144	131
Long-Document Summarization	157	137
Short-Form Summarization	130	123
Blog Post Writing	138	121

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