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Anthropic: Claude Sonnet 5 vs OpenAI: GPT-5.4 Nano

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-07-01.

Anthropic: Claude Sonnet 5 OpenAI: GPT-5.4 Nano
Vendoranthropicopenai
Quality Score100100
Benchmark Score-68.5
Input Price$2.00/M$0.20/M
Output Price$10.00/M$1.25/M
Context Window1,000,000400,000
Max Output128,000128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--
Benchmark Scores
ai_index-63.1
ai_index_agentic-45.4
ai_index_coding-92.5

Who wins by task?

TaskAnthropic: Claude Sonnet 5OpenAI: GPT-5.4 Nano
SQL Generation 132 163
Code Review 132 158
Code Completion 117 133
Code Refactoring 136 157
Bug Fixing 136 168
Unit Test Generation 124 148
Code Documentation 129 140
Regex Writing 117 132
CI/CD Pipelines 120 139
Frontend Component Design 122 141
Data Analysis 124 159
CSV / Spreadsheet Cleanup 132 151
ETL Scripting 128 148
JSON Extraction 121 146
Bulk Data Labeling 118 134
OCR / Document Parsing 131 144
Table Extraction from PDFs 131 144
Long-Document Summarization 136 154
Short-Form Summarization 113 130
Blog Post Writing 120 135

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

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