
#223 - Haiku 4.5, OpenAI DevDay, Claude Skills, Scaling RL, SB 243
Last Week in AI
 00:00 
California Regulates AI Companions to Protect Children and Vulnerable Users
Andrey explains SB243 requirements for age verification, warnings, and protections against harms and deepfakes.
 Play episode from 01:02:06 
 Transcript 
Transcript
Episode notes
Our 223st episode with a summary and discussion of last week's big AI news!
Recorded on 10/17/2025
Hosted by Andrey Kurenkov and co-hosted by Erik Schnultz
Feel free to email us your questions and feedback at contact@lastweekinai.com and/or hello@gladstone.ai
Read out our text newsletter and comment on the podcast at https://lastweekin.ai/
In this episode:
- Anthropic and OpenAI have announced updates to their AI models and tools, including Haiku 4.5 and various business collaborations.
 - Multiple companies like Slack and Salesforce are integrating AI assistants and agents into their platforms, enhancing task management and business operations.
 - Recent research in reinforcement learning and agent memory curation highlights new methods for improving AI model performance and context management.
 - California has passed a law to regulate AI chatbots for children and vulnerable users, and there are rising concerns over the increasing amount of AI-generated content on the internet.
 
Timestamps:
- (00:00:10) Intro / Banter
 - (00:01:31) News Preview
 - Tools & Apps
 - (00:02:18) Anthropic launches new version of scaled-down ‘Haiku’ model
 - (00:04:52) Everything OpenAI announced at DevDay 2025: Agent Kit, Apps SDK, ChatGPT, and more | ZDNET
 - (00:09:11) Anthropic turns to ‘skills’ to make Claude more useful at work | The Verge
 - (00:13:20) Microsoft launches ‘vibe working’ in Excel and Word | The Verge
 - (00:17:22) Google releases Veo 3.1, adds it to Flow video editor | TechCrunch
 - (00:19:40) Slack is turning Slackbot into an AI assistant | The Verge
 - (00:22:52) Salesforce announces Agentforce 360 as enterprise AI competition heats up | TechCrunch
 - Applications & Business
 - (00:24:58) Broadcom stock pops 9% on OpenAI custom chip deal, adding to Nvidia and AMD agreements
 - (00:27:58) How ByteDance Made China’s Most Popular AI Chatbot | WIRED
 - (00:30:08) Amazon's Zoox Robotaxis Have Arrived In Las Vegas - Here's What Riders Are Experiencing
 - (00:32:43) Waymo’s robotaxis are coming to London | The Verge
 - (00:34:14) Reflection AI raises $2B to be America's open frontier AI lab, challenging DeepSeek | TechCrunch
 - (00:35:58) General Intuition lands $134M seed to teach agents spatial reasoning using video game clips | TechCrunch
 - (00:38:36) Supabase nabs $5B valuation, four months after hitting $2B | TechCrunch
 - Projects & Open Source
 - (00:40:58) Neuphonic Open-Sources NeuTTS Air: A 748M-Parameter On-Device Speech Language Model with Instant Voice Cloning - MarkTechPost
 - (00:43:06) Anthropic AI Releases Petri: An Open-Source Framework for Automated Auditing by Using AI Agents to Test the Behaviors of Target Models on Diverse Scenarios - MarkTechPost
 - Research & Advancements
 - (00:44:25) [2510.13786] The Art of Scaling Reinforcement Learning Compute for LLMs
 - (00:48:51) [2510.01171] Verbalized Sampling: How to Mitigate Mode Collapse and Unlock LLM Diversity
 - (00:51:22) [2510.12635] Memory as Action: Autonomous Context Curation for Long-Horizon Agentic Tasks
 - (00:54:31) [2510.07364] Base Models Know How to Reason, Thinking Models Learn When
 - (00:57:24) [2510.12402] Cautious Weight Decay
 - Policy & Safety
 - (01:02:03) California becomes first state to regulate AI companion chatbots | TechCrunch
 - (01:04:13) Over 50 Percent of the Internet Is Now AI Slop, New Data Finds
 - Synthetic Media & Art
 - (01:06:31) OpenAI Reverses Stance on Use of Copyright Works in Sora - WSJ
 - (01:08:29) Character.AI removes Disney characters from platform after studio issues warning
 
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