OpenAI: Lightweight ChatGPT Web App for Logged-Out Users

OpenAI is testing a lightweight ChatGPT web app for users who are not logged in. This stripped-down version prioritizes speed and anonymity over a full feature set. The company started allowing account-free access in April 2024. Since then, they've upgraded the logged-out experience, enabling access to ChatGPT Search without an account by February 5, 2025. By October 22, 2025, signed-out users were upgraded to higher-quality models, including GPT-5 Instant. OpenAI's engineering improvements have reportedly reduced inference costs for this logged-out experience by over 50%. This efficiency allows them to serve more anonymous users for the same budget. The lightweight app removes features like conversation history and custom instructions, further managing costs. This move puts pressure on competitors like Google and Anthropic to match OpenAI's efficiency in balancing open access with cost management.