GPT-5.4 is a frontier GPT model for advanced coding, agentic workflows, and complex professional tasks. It offers three reasoning levels — Medium, High, and Extra High — so you can trade response speed for deeper internal thinking on harder problems.
GPT-5.4 comes with 3 selectable reasoning levels.
Pick the level right in the crowSync composer — higher levels think longer on hard problems
(and use more output tokens); token prices stay the same at every level.
Medium
GPT-5.4 Medium
High
GPT-5.4 High
Extra High
GPT-5.4 Extra High
What this model can do
You provide
📄 Documents (PDFs, Word, TXT)
🖼️ Images & Screenshots
💬 Text instructions
It creates
📝 Formatted text & summaries
📊 Excel sheets & CSV data
📽️ PowerPoint slides & decks
💻 Usable code snippets
🤖 JSON & structured data
🎨 Generated images
Capabilities
Reasoning
Better suited to multi-step analysis, planning, and harder prompts.
Vision
Can work with screenshots, charts, or other image inputs.
Document input
Can accept supported documents directly in chat.
Structured output
Can return JSON for workflows that need machine-readable output.
Tool use
Can use compatible tools when crowSync enables them for the run.
Native tools in crowSync
Web search
Search the live web during a run.
Available
File search
Search uploaded files or indexed collections.
Available
Code interpreter
Run code for calculations, analysis, and generated files.
Available
Image generation
Generate images directly from prompts.
Available
MCP integrations
Use compatible MCP integrations where supported.
Available
Input and output
Input
Text
Image
Documents
Output
Text
Image
Common use cases
Complex planning, debugging, and multi-step analysis.
Research tasks that need current information from the web.
Summarizing PDFs, documents, or longer working files.
Data analysis, calculations, and code-backed workflows.