head-to-head

Google: Gemini 3.5 Flash Lite (batch) vs OpenAI: GPT-5.6 Terra Pro

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

	Google: Gemini 3.5 Flash Lite (batch)	OpenAI: GPT-5.6 Terra Pro
Vendor	google	openai
Quality Score	100	100
Benchmark Score	34.2	-
Input Price	$0.15/M	$2.00/M
Output Price	$1.25/M	$12.00/M
Context Window	1,048,576	1,050,000
Max Output	65,536	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	✓	-
Benchmark Scores
ai_index	36.6	-

Who wins by task?

Task	Google: Gemini 3.5 Flash Lite (batch)	OpenAI: GPT-5.6 Terra Pro
SQL Generation	138	132
Code Review	139	132
Code Completion	132	117
Code Refactoring	141	136
Bug Fixing	143	136
Unit Test Generation	128	124
Code Documentation	135	129
Regex Writing	123	117
CI/CD Pipelines	124	120
Frontend Component Design	126	122
Data Analysis	129	124
CSV / Spreadsheet Cleanup	135	132
ETL Scripting	133	128
JSON Extraction	131	121
Bulk Data Labeling	129	117
OCR / Document Parsing	132	131
Table Extraction from PDFs	132	131
Long-Document Summarization	143	136
Short-Form Summarization	125	113
Blog Post Writing	126	120

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