head-to-head

Anthropic: Claude Sonnet 5 (batch) vs Google: Gemini 3.5 Flash

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-29.

	Anthropic: Claude Sonnet 5 (batch)	Google: Gemini 3.5 Flash
Vendor	anthropic	google
Quality Score	100	100
Benchmark Score	90.4	83.3
Input Price	$1.00/M	$1.50/M
Output Price	$5.00/M	$9.00/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	88.0	82.8
ai_index_agentic	77.0	61.8
ai_index_coding	100.0	100.0

Who wins by task?

Task	Anthropic: Claude Sonnet 5 (batch)	Google: Gemini 3.5 Flash
SQL Generation	171	168
Code Review	167	164
Code Completion	120	119
Code Refactoring	164	162
Bug Fixing	180	176
Unit Test Generation	154	152
Code Documentation	143	141
Regex Writing	136	133
CI/CD Pipelines	144	143
Frontend Component Design	146	145
Data Analysis	171	167
CSV / Spreadsheet Cleanup	154	153
ETL Scripting	154	152
JSON Extraction	140	138
Bulk Data Labeling	126	124
OCR / Document Parsing	146	146
Table Extraction from PDFs	146	146
Long-Document Summarization	160	157
Short-Form Summarization	123	121
Blog Post Writing	140	138

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