ChatGPT
OpenAI's conversational AI for writing, research, coding, and everyday productivity.
Introduction
ChatGPT is OpenAI's flagship AI assistant, trusted by millions for drafting content, summarizing documents, debugging code, and brainstorming ideas. Powered by GPT-4o, it handles text, images, and data with strong reasoning. The free tier is generous, while ChatGPT Plus unlocks faster models, advanced data analysis, and image generation. It is the most widely adopted general-purpose AI assistant available today.
Pricing
From $20 / month
Lumen Trust & Privacy Note
Audited February 2026ChatGPT is fully cloud-based with no local processing; all inputs are handled on OpenAI servers, making data sovereignty low. Its mission centres on broadly beneficial AI, with transparent safety research and a strong free tier that democratises access. Recommended for general productivity, writing, and research — avoid sharing sensitive PII or confidential commercial data.
Disclaimer
Information provided may be inaccurate or outdated.
Pricing and features are subject to change by the provider.
The Lumen Trust & Privacy Note is a transparency assessment based on available provider data and should not be taken as a definitive legal or security audit.