head-to-head

Anthropic: Claude Sonnet 5 vs Google: Gemini 3.1 Flash Lite Preview

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

	Anthropic: Claude Sonnet 5	Google: Gemini 3.1 Flash Lite Preview
Vendor	anthropic	google
Quality Score	100	100
Benchmark Score	63.9	-
Input Price	$2.00/M	$0.25/M
Output Price	$10.00/M	$1.50/M
Context Window	1,000,000	1,048,576
Max Output	128,000	65,536
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	✓
Benchmark Scores
ai_index	63.0	-

Who wins by task?

Task	Anthropic: Claude Sonnet 5	Google: Gemini 3.1 Flash Lite Preview
SQL Generation	140	133
Code Review	144	132
Code Completion	118	131
Code Refactoring	146	136
Bug Fixing	148	136
Unit Test Generation	131	124
Code Documentation	135	131
Regex Writing	123	119
CI/CD Pipelines	127	120
Frontend Component Design	129	122
Data Analysis	133	124
CSV / Spreadsheet Cleanup	135	133
ETL Scripting	136	128
JSON Extraction	121	131
Bulk Data Labeling	118	129
OCR / Document Parsing	134	131
Table Extraction from PDFs	134	131
Long-Document Summarization	146	137
Short-Form Summarization	116	123
Blog Post Writing	128	121

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