Who makes GPT-5.4 Thinking?

GPT-5.4 Thinking is developed by OpenAI Group PBC.

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GPT-5.4 Thinking

Name: GPT-5.4 Thinking
Author: OpenAI, LLC

by OpenAI, LLC

AI Model

Low Confidence

GPT-5.4 Thinking is OpenAI’s reasoning model, released in March 2026 and designed for complex, multi-step professional tasks requiring deep analysis, long context, and reliable execution.

Transparency Score

40%

Limited transparency

Supply Chain

10/20

Compliance

0/20

Policy

5/25

Technical

25/25

Ethical & Operational

0/10

Openness Assessment

50%Partially Open

6 Open

2 Partial

6 Closed

Availability

2/5 Open

Documentation

4/6 Open

Access Methods

2/3 Open

Data from EU Open Source AI Index (DOI: 10.5281/zenodo.15386042), licensed under CC-BY 4.0

Vendor Information

Complete information about the vendor/provider of this AI application

Company Name

OpenAI, LLCView all products →

Legal Entity

OpenAI Group PBC(Trading as: OpenAI)

Registered Address

EU AI Act Provider Information

Verification Status:

Unverified

Legal Entity

OpenAI Group PBC(Trading as: OpenAI)

Registered Address

Supply Chain Network

Visual representation of the vendor's digital supply chain relationships

Policies & Documents

Legal, privacy, and compliance documentation

Privacy & Security

Cookie Policy

Privacy and policies

Details on data privacy and usage policies

Compliance & Risk

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GPT-5.4 Thinking

Privacy & Security

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