On the Biology of a Large Language Model (Part 1) @YannicKilcher
On the Biology of a Large Language Model (Part 1)  @YannicKilcher
Uploaded April 2025 | Updated September 2026, 2 weeks ago
An in-depth look at Anthropic's Transformer Circuit Blog Post

https://transformer-circuits.pub/2025/attribution-graphs/biology.html

Abstract:
We investigate the internal mechanisms used by Claude 3.5 Haiku — Anthropic's lightweight production model — in a variety of contexts, using our circuit tracing methodology.

Authors:
Jack Lindsey†, Wes Gurnee*, Emmanuel Ameisen*, Brian Chen*, Adam Pearce*, Nicholas L. Turner*, Craig Citro*,
David Abrahams, Shan Carter, Basil Hosmer, Jonathan Marcus, Michael Sklar, Adly Templeton,
Trenton Bricken, Callum McDougall◊, Hoagy Cunningham, Thomas Henighan, Adam Jermyn, Andy Jones, Andrew Persic, Zhenyi Qi, T. Ben Thompson,
Sam Zimmerman, Kelley Rivoire, Thomas Conerly, Chris Olah, Joshua Batson*‡

Links:
Homepage: ykilcher.com
Merch: ykilcher.com/merch
YouTube: youtube.com/c/yannickilcher
Twitter: twitter.com/ykilcher
Discord: ykilcher.com/discord
LinkedIn: linkedin.com/in/ykilcher

If you want to support me, the best thing to do is to share out the content :)

If you want to support me financially (completely optional and voluntary, but a lot of people have asked for this):
SubscribeStar: subscribestar.com/yannickilcher
Patreon: patreon.com/yannickilcher
Bitcoin (BTC): bc1q49lsw3q325tr58ygf8sudx2dqfguclvngvy2cq
Ethereum (ETH): 0x7ad3513E3B8f66799f507Aa7874b1B0eBC7F85e2
Litecoin (LTC): LQW2TRyKYetVC8WjFkhpPhtpbDM4Vw7r9m
Monero (XMR): 4ACL8AGrEo5hAir8A9CeVrW8pEauWvnp1WnSDZxW7tziCDLhZAGsgzhRQABDnFy8yuM9fWJDviJPHKRjV4FWt19CJZN9D4n
On the Biology of a Large Language Model (Part 1)Mixtral of Experts (Paper Explained)What is Q-Learning (back to basics)Hallucination-Free? Assessing the Reliability of Leading AI Legal Research Tools (Paper Explained)Art @ NeurIPS 2023ML News Live! (Dec 30, 2021) Anonymous user RIPS Tensorflw | AI prosecutors rising | Penny ChallengeNeurIPS 2023 Poster Session 1 (Tuesday Evening)Video PreTraining (VPT): Learning to Act by Watching Unlabeled Online Videos (Paper Explained)NeurIPS 2023 Poster Session 2 (Wednesday Morning)ACCEL: Evolving Curricula with Regret-Based Environment Design (Paper Review)[ML News] Metas OPT 175B language model | DALL-E Mega is training | TorToiSe TTS fakes my voice[ML News] Devin AI Software Engineer | GPT-4.5-Turbo LEAKED | US Govt Report: Total Extinction
Yannic Kilcher |

On the Biology of a Large Language Model (Part 1)

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER