Last Week in AI

#260 - Muse, Misalignment, Math

October 19, 2026·1h 34m
Episode Description from the Publisher

Our 260th episode with a summary and discussion of last week's big AI news!Recorded on 10/07/2026 ; ok I lied, hopefully next ep will be out on time though...Hosted by Andrey Kurenkov and Jeremie HarrisFeel free to email us your questions and feedback at andreyvkurenkov@gmail.com and/or hello@gladstone.aiRead out our text newsletter and comment on the podcast at https://lastweekin.ai/In this episode:OpenAI began testing new visual ad formats in ChatGPT image generation, while TikTok launched an AI shopping assistant with one-click checkout, highlighting growing agent-mediated commerce and “generative engine optimization.”Meta’s Muse app hit 5M+ downloads with heavy in-house promotion, and Meta/Walmart/Stripe introduced a “personal agent protocol” to standardize how AI agents interact with businesses.ElevenLabs’ valuation reportedly doubled to $22B amid rising voice-agent demand, while major open releases included Reflection’s Beam (MoE, compute-efficient), Mistral’s 1T-parameter “Le Chunk” (Mistral Large 4), and Google’s Embedding Gemma 2 multimodal embedding model.Safety/policy and research updates included OpenAI misalignment reports, a resignation criticizing OpenAI’s culture and “iterative deployment,” California data-center regulation bills, dismissal of Google AI Overview antitrust suits, Meta’s new end-to-end software engineering benchmark, and OpenAI publishing 722 math manuscripts across 372 result families with potential cryptography and national security implications.A thank you to our current sponsors:Box - visit box.com/LWIAI to learn moreNotion - visit notion.com/lwai to try Notion’s Developer Platform today.ODSC AI - visit odsc.ai/east and use promo code LWAI for an additional 15% off your pass to ODSC AI East 2026.Factor - visit factormeals.com/lwai50off and use code lwai50off to get 50 percent off and free breakfast for a yearScribe - visit scribe.how/lwai and mention lwai for a 30-dayTimestamps (these may a few minutes off due to sponsor inserts):00:00:10) Intro / Banter(00:02:58) News PreviewTools & Apps(00:03:31) OpenAI is sticking more ads in ChatGPT | The Verge(00:07:48) TikTok rolls out an AI shopping assistant and one-click checkout | TechCrunchApplications & Business(00:11:57) Meta's Muse tops 5 million downloads, faster than ChatGPT, Claude + Meta joins with group of companies to tame ‘chaos’ of doing business with AI bots(00:17:53) ElevenLabs' valuation doubles to $22 billion on surging AI voice-agent demand | ReutersProjects & Open Source(00:23:05) Reflection debuts Beam, an open-weight AI model to rival Chinese models at lower compute cost | TechCrunch(00:32:19) Mistral Says Its New AI Model ‘Le Chonk’ Is the Best Open-Weight Offering Outside of

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