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...
Specifications
- Provider
- OpenAI
- Type
- Vendor / proprietary
- Modality
- text+image+file->text
- Context window
- 1050K
- Released
- March 5, 2026
Capabilities
Input: textInput: imageInput: fileOutput: textReasoning requiredConfigurable reasoning effort
Strengths
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools
