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Anthropic Claude Sonnet Latest vs OpenAI: GPT-5.4

Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-05-14.

Anthropic Claude Sonnet Latest OpenAI: GPT-5.4
Vendor~anthropicopenai
Quality Score100100
Input Price$3.00/M$2.50/M
Output Price$15.00/M$15.00/M
Context Window1,000,0001,050,000
Max Output128,000128,000
Tool Calling✓✓
Structured Output✓✓
Reasoning Mode✓✓
Vision✓✓
Audio--

Who wins by task?

TaskAnthropic Claude Sonnet LatestOpenAI: GPT-5.4
Code Completion 116 116
Code Documentation 128 128
Regex Writing 116 116
JSON Extraction 120 120
Bulk Data Labeling 116 116
Short-Form Summarization 112 112

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

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