GPT-5.4-PRO
GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs.
Input
Output
Context
1050K
Max Output
128K
Parameters
—
Technical Specifications
Model TypeChat
Context Window1.1M
Max Output Tokens128K
Parameters—
Training Cutoff—
Licenseproprietary
Capabilities
Input Modalities
textimagefile
Output Modalities
text
Features
function_callingjson_modereasoningstreamingtext_generationvision
Resources & Links
proprietary — Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: May 5, 2026
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