head-to-head

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

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 (batch)
Vendor	google	openai
Quality Score	100	100
Benchmark Score	34.2	-
Input Price	$0.15/M	$1.00/M
Output Price	$1.25/M	$6.00/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 (batch)
SQL Generation	138	133
Code Review	139	132
Code Completion	132	118
Code Refactoring	141	136
Bug Fixing	143	136
Unit Test Generation	128	124
Code Documentation	135	130
Regex Writing	123	118
CI/CD Pipelines	124	120
Frontend Component Design	126	122
Data Analysis	129	124
CSV / Spreadsheet Cleanup	135	133
ETL Scripting	133	128
JSON Extraction	131	122
Bulk Data Labeling	129	119
OCR / Document Parsing	132	131
Table Extraction from PDFs	132	131
Long-Document Summarization	143	137
Short-Form Summarization	125	114
Blog Post Writing	126	121

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