GPT-5.4 Pro
by OpenAItext+image+file->text3 endpoints
Overview
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...
Capabilities
Text generation
Image understanding
Tool use / Function calling
Structured output
Extended reasoning
Long context
File input
Deterministic seed
Modalities
Input
TextImageFile
Output
Text
Technical Specifications
Context Window
1.1M tokens
Max Output
128K tokens
Tokenizer
GPT
Content Moderation
Enabled
Uptime (24h)
9901.2%
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools