How many parameters does GPT-5.4 Pro have?

Parameter count for GPT-5.4 Pro is not available. See the Hugging Face model page for full specifications.

Who created GPT-5.4 Pro?

GPT-5.4 Pro was published by OpenAI on Hugging Face.

GPT-5.4 Pro

Name: GPT-5.4 Pro
Author: OpenAI

Multimodalby OpenAI·Model page ↗

OpenAI's GPT-5.4 Pro reasoning model with a 1M-token context for multimodal analysis and coding.

Model Card

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...

Author

OpenAI

Organization · ✓

openai

Details

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Context1.1M tokens

Input price$30 /1M

Output price$180 /1M

CreatedMar 5, 2026

Updated—

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