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Anthropic: Claude Opus 4.8 (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 Opus 4.8 (batch) Google: Gemini 3.5 Flash
Vendoranthropicgoogle
Quality Score100100
Benchmark Score94.383.3
Input Price$2.50/M$1.50/M
Output Price$12.50/M$9.00/M
Context Window1,000,0001,048,576
Max Output128,00065,536
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio-✓
Benchmark Scores
ai_index91.982.8
ai_index_agentic77.861.8
ai_index_coding100.0100.0
eqbench83.3-

Who wins by task?

TaskAnthropic: Claude Opus 4.8 (batch)Google: Gemini 3.5 Flash
SQL Generation 177 168
Code Review 178 164
Code Completion 121 119
Code Refactoring 176 162
Bug Fixing 191 176
Unit Test Generation 161 152
Code Documentation 148 141
Regex Writing 138 133
CI/CD Pipelines 151 143
Frontend Component Design 150 145
Data Analysis 176 167
CSV / Spreadsheet Cleanup 158 153
ETL Scripting 163 152
JSON Extraction 138 138
Bulk Data Labeling 123 124
OCR / Document Parsing 149 146
Table Extraction from PDFs 149 146
Long-Document Summarization 170 157
Short-Form Summarization 123 121
Blog Post Writing 146 138

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

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