# #251 - Mythos Back, Sonnet 5, Etched, LongCat

Page: https://stenobird.com/podcast/last-week-in-ai/251-mythos-back-sonnet-5-etched-longcat
Text version: https://stenobird.com/podcast/last-week-in-ai/251-mythos-back-sonnet-5-etched-longcat.md
Podcast: [Last Week in AI](https://stenobird.com/podcast/last-week-in-ai)
Published: 2026-07-09T05:00:00+00:00
Episode link: https://mgln.ai/e/211/rss.art19.com/episodes/8d39881b-8004-472f-a8af-78aa108f3ffa.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0
Audio file: https://mgln.ai/e/211/rss.art19.com/episodes/8d39881b-8004-472f-a8af-78aa108f3ffa.mp3?rss_browser=BAhJIg90cmFuc2NyaWJyBjoGRVQ%3D--952c5701c84ad333c69d5faa668f8177091704f0
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JSON: https://stenobird.com/v1/public/podcasts/last-week-in-ai/episodes/251-mythos-back-sonnet-5-etched-longcat
Duration seconds: 5402

## Resource

Our 251st episode with a summary and discussion of last week's big AI news! Recorded on 07/01/2026 Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at andreyvkurenkov@gmail.com and/or  hello@gladstone.ai Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: Anthropic redeploys Claude Fable 5 after talks with the US government, adding new cybersecurity classifiers, drafting a jailbreak-severity framework with major partners, and expanding model-testing coordination; broader concerns remain about the inevitability of jailbreaks and uneven release constraints versus OpenAI. Anthropic launches Claude Sonnet 5 with time-limited discounted pricing, improved agentic coding and benchmark performance, reduced misaligned behavior, and default cyber safeguards despite relatively weaker cybersecurity capability than top-tier models. New tools and apps include Google NotebookLM generating TikTok-style vertical video summaries of uploaded research and Google releasing Nano Banana 2 Lite, a faster, cheaper image generator available via API. Business and research updates span Etched’s push toward full-stack inference hardware with major funding and contracts, Baidu’s AI chip unit IPO ambitions, Agility Robotics’ SPAC plan, DeepSeek’s hiring expansion, and China’s open-source Longcat 2.0 MoE model with notable large-scale training and efficiency techniques alongside new long-horizon agent benchmarks. Timestamps (note - these don't take into account dynamically inserted ads and therefore may be off by a couple of minutes): (00:00:10) Intro / Banter (00:02:07) News Preview Tools & Apps (00:02:32) Trump drops restrictions on Anthropic's Mythos and Fable models | TechCrunch (00:16:08) Anthro…

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