head-to-head

Anthropic: Claude Sonnet Latest vs OpenAI: GPT-5.4

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

	Anthropic: Claude Sonnet Latest	OpenAI: GPT-5.4
Vendor	~anthropic	openai
Quality Score	100	100
Benchmark Score	-	80.9
Input Price	$2.00/M	$2.50/M
Output Price	$10.00/M	$15.00/M
Context Window	1,000,000	1,050,000
Max Output	128,000	128,000
Tool Calling	✓	✓
Structured Output	✓	✓
Reasoning Mode	✓	✓
Vision	✓	✓
Audio	-	-
Benchmark Scores
ai_index	-	64.3
eqbench	-	82.4

Who wins by task?

Task	Anthropic: Claude Sonnet Latest	OpenAI: GPT-5.4
SQL Generation	132	145
Code Review	132	154
Code Completion	117	120
Code Refactoring	136	157
Bug Fixing	136	158
Unit Test Generation	124	137
Code Documentation	129	140
Regex Writing	117	126
CI/CD Pipelines	120	133
Frontend Component Design	122	133
Data Analysis	124	138
CSV / Spreadsheet Cleanup	132	139
ETL Scripting	128	145
JSON Extraction	121	120
Bulk Data Labeling	118	116
OCR / Document Parsing	131	136
Table Extraction from PDFs	131	136
Long-Document Summarization	136	157
Short-Form Summarization	113	117
Blog Post Writing	120	133

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