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Life & fun · January 8, 2021

Ecco – See what your NLP language model is “thinking”

Ecco – See what your NLP language model is “thinking” launched on January 8, 2021 with 185 votes, #132 of 3,157 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 5 years on.

Visit eccox.io ↗Alternativestop 4% of January 2021

In plain words

Ecco is a tool for visualizing and understanding how natural language processing models interpret text. It provides transparency into what NLP language models are processing and how they arrive at their outputs. The tool is designed for researchers, developers, and anyone working with language models who wants to inspect model behavior and gain insights into internal computations. Ecco launched in January 2021 and is available at eccox.io.

written from the facts on this page · September 2026

From the sources

Ecco is a python library that creates interactive visualizations allowing you to explore what your NLP Language Model is thinking . Give GPT2 some input text, and see it generate the output token by token. Which input word contributed the most to generating each output word? See more precise input saliency values using the detailed view. Ecco captures the model's neuron activations. Can you make sense of them? Examine underlying patterns in neuron activations using non-negative matrix factorization. Ecco is an alpha release of a research project, with a focus on GPT-based Transformer language models. We'd love to hear your feedbackfrom eccox.io

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