head-to-head

Anthropic Claude Sonnet Latest vs OpenAI: GPT-5.4 Nano

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-06-26.

	Anthropic Claude Sonnet Latest	OpenAI: GPT-5.4 Nano
Vendor	~anthropic	openai
Quality Score	100	100
Benchmark Score	-	68.0
Input Price	$3.00/M	$0.20/M
Output Price	$15.00/M	$1.25/M
Context Window	1,000,000	400,000
Max Output	128,000	128,000
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?

Task	Anthropic Claude Sonnet Latest	OpenAI: GPT-5.4 Nano
SQL Generation	132	163
Code Review	132	158
Code Completion	116	133
Code Refactoring	136	157
Bug Fixing	136	168
Unit Test Generation	124	148
Code Documentation	128	140
Regex Writing	116	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	120	146
Bulk Data Labeling	116	134
OCR / Document Parsing	131	144
Table Extraction from PDFs	131	144
Long-Document Summarization	136	154
Short-Form Summarization	112	130
Blog Post Writing	120	135

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