Interactive 3D and 2D Visualization of GPT-2
I’ve been building an interactive 3D + 2D visualization of GPT-2. It displays real activations and attention scores extracted from GPT-2 Small (124M) during a forward pass. The goal is to make it easier to learn how LLMs work by showing what is happening inside the model. The 3D part is built with Three.js, and the 2D part is built with plain HTML/CSS/JS. Would love to hear your thoughts or feedback!
In plain words
This tool provides an interactive 3D and 2D visualization of GPT-2 Small, displaying real activations and attention scores during model inference. It is designed for students and researchers who want to understand how large language models work by observing their internal operations. The visualization uses Three.js for 3D rendering and standard web technologies for 2D components, making the model's behavior directly observable and interpretable.
written from the facts on this page · September 2026
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