--- title: Open-sourcing circuit-tracing tools | daily.dev description: Anthropic has open-sourced circuit-tracing tools that generate attribution graphs to reveal the internal decision-making steps of large language models. The... canonical: https://daily.dev/posts/open-sourcing-circuit-tracing-tools-hmep6byp3 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Open-sourcing circuit-tracing tools | daily.dev og:description: Anthropic has open-sourced circuit-tracing tools that generate attribution graphs to reveal the internal decision-making steps of large language models. The... og:url: https://daily.dev/posts/open-sourcing-circuit-tracing-tools-hmep6byp3 og:image: https://api.daily.dev/og/posts/hmEP6bYP3.png og:image:alt: Open-sourcing circuit-tracing tools og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Open-sourcing circuit-tracing tools **[Hacker News](https://daily.dev/sources/hn)** · 2 min read · 3 upvotes · 1 comments ## Summary Anthropic has open-sourced circuit-tracing tools that generate attribution graphs to reveal the internal decision-making steps of large language models. The library supports popular open-weights models and includes an interactive frontend hosted by Neuronpedia for exploring these graphs. Researchers can trace circuits, visualize and annotate graphs, and test hypotheses by modifying feature values. The tools have been used to study multi-step reasoning and multilingual representations in models like Gemma-2-2b and Llama-3.2-1b, aiming to advance AI interpretability research across the broader community. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#open-source](https://daily.dev/tags/open-source), [#nlp](https://daily.dev/tags/nlp), [#anthropic](https://daily.dev/tags/anthropic), [#ai-safety](https://daily.dev/tags/ai-safety) [View this post on daily.dev](https://daily.dev/posts/open-sourcing-circuit-tracing-tools-hmep6byp3) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Open-sourcing circuit-tracing tools","url":"https://daily.dev/posts/open-sourcing-circuit-tracing-tools-hmep6byp3","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/open-sourcing-circuit-tracing-tools-hmep6byp3"},"datePublished":"2025-05-30T00:40:39.488Z","dateModified":"2025-05-30T00:41:02.485Z","description":"Anthropic has open-sourced circuit-tracing tools that generate attribution graphs to reveal the internal decision-making steps of large language models. The...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/dffc7be44ae41fb5812c71982ab764f6?_a=AQAEulh","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/dffc7be44ae41fb5812c71982ab764f6?_a=AQAEulh","isAccessibleForFree":true,"articleSection":"Hacker News","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":1,"discussionUrl":"https://daily.dev/posts/open-sourcing-circuit-tracing-tools-hmep6byp3","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"keywords":"open-source,nlp,anthropic,ai-safety","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"Open-sourcing circuit-tracing tools"}]} ```