OpenAI
OpenAI: GPT-5.4 Pro
openai/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. Optimized for step-by-step reasoning, instruction following, and accuracy, GPT-5.4 Pro excels at agentic coding, long-context workflows, and multi-step problem solving.
Input
$30
/ 1M tokens
Output
$180
/ 1M tokens
Context window
1.05M
tokens
Limits
Context
1,050,000
tokens
Max output
128,000
12% of the context window
Model facts
Author
OpenAI
Tokenizer
GPT
Modality
Text + Image + File -> Text
Created
Mar 5, 2026
Reasoning
RequiredDefault MediumXhighHighMedium
Publication status
Hugging Face: unavailableLicense: not publishedParameter count: not published
Modalities
Input · TextInput · ImageInput · FileOutput · Text
Generation controls
Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatSeedStructured outputsTool choiceToolsVerbosity