GPT-5.4: OpenAI's New Flagship

GPT-5.4 is OpenAI's latest flagship model, and it's one of the most fully-featured options on Magicdoor. It supports everything: vision, web search, image generation, Canvas, reasoning mode, code interpreter, and PDF analysis.

Pricing

• Prompt tokens: $2.50 per million
• Completion tokens: $15.00 per million

In practice, a typical conversation costs a few cents. GPT-5.4 is competitively priced alongside Claude Sonnet 4.6 ($3/$15), making it a solid choice when you need flagship capabilities.

What It's Good For

Code interpreter support is the standout feature. If you need to analyze data, run calculations, or process files, GPT-5.4 can actually execute code rather than just talk about it. Upload a CSV and ask for visualizations - it'll generate them.

Canvas support means you can use it for collaborative document editing, iterating on drafts in real-time.

The 400,000 token context window is generous - enough for most codebases and long documents, though Gemini 3.1 Pro offers more if you need it.

When to Use GPT-5.4

Use GPT-5.4 when you need:

• Code execution (data analysis, file processing, calculations)
• Canvas collaboration for document work
• A balance of capability and cost

When to Use Something Else

• For writing quality: Claude Sonnet 4.6 often produces more polished prose
• For massive context: Gemini 3.1 Pro has a 1 million token window
• For everyday tasks: GPT-5.4 Mini is much cheaper and handles routine work well

Getting Started

Select GPT-5.4 from the model dropdown in any chat. Magicdoor will automatically use web search when needed, so you don't have to think about it.

If you're coming from ChatGPT, GPT-5.4 will feel familiar but with the added benefit of Magicdoor's usage-based pricing - you only pay for what you actually use.