# "Is Mythos good at cyber because it kept hacking Anthropic during training?" by Tim Hua

Page: https://stenobird.com/podcast/lesswrong-curated-popular-5643401/is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua
Text version: https://stenobird.com/podcast/lesswrong-curated-popular-5643401/is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua.md
Podcast: [LessWrong (Curated & Popular)](https://stenobird.com/podcast/lesswrong-curated-popular-5643401)
Published: 2026-07-27T21:30:29+00:00
Episode link: https://www.buzzsprout.com/2037297/episodes/19559400-is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua.mp3
Audio file: https://www.buzzsprout.com/2037297/episodes/19559400-is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua.mp3
Processing state: not_requested
JSON: https://stenobird.com/v1/public/podcasts/lesswrong-curated-popular-5643401/episodes/is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua
Duration seconds: 374

## Resource

From the Mythos preview system card (emphasis mine): We ran an automated review of model behavior during training, sampling several hundred thousand transcripts from across much of the training process. We used recursive-summarization-based tools backed by Claude Opus 4.6 to summarize the resulting transcripts. [...] The most notable finding was that the model occasionally circumvented network restrictions in its training environment to access the internet and download data that let it...

## Actions

- request_transcript: `POST https://stenobird.com/v1/public/podcasts/lesswrong-curated-popular-5643401/episodes/is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua/transcription-requests` — Idempotently request low-priority transcript generation for this episode.
- read_markdown: `GET https://stenobird.com/podcast/lesswrong-curated-popular-5643401/is-mythos-good-at-cyber-because-it-kept-hacking-anthropic-during-training-by-tim-hua.md` — Read the agent-friendly Markdown representation of this episode resource.

A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed.

## Transcript

Full transcripts are not published on public pages unless there is a clear rights basis.