LWiAI Podcast #237 - Nemotron 3 Super, xAI reborn, Anthropic Lawsuit, Research!

Our 237th episode with a summary and discussion of last week’s big AI news!

Recorded on 03/13/2026

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

In this episode:

• Perplexity announced “Personal Computer,” a local Mac-based AI agent positioned as a safer alternative to OpenAI’s computer-use agents, while Anthropic added GitHub PR code review pricing reviews at $15–$25 and Cursor launched trigger-based “Automations” for always-on coding agents.

• ChatGPT introduced interactive math/science visuals and Anthropic added in-chat interactive charts/diagrams; Nvidia released open weights for its 120B-parameter Natron Free Super hybrid Transformer–Mamba latent-MoE model trained natively at 4-bit for Blackwell GPUs.

• Nvidia halted H200 production for China amid customs blocks and domestic chip pressure; xAI saw major co-founder departures; Anthropic previewed a Claude Marketplace for enterprise procurement; Yann LeCun’s aMI raised $1.3B; humanoid robot maker Sanctuary reached a $1.15B valuation.

• Anthropic sued the Pentagon over a “supply chain risk” designation as memos ordered removal within 180 days; research covered models resisting activation steering, limits of chain-of-thought control, inference-scaling boosting cyber-task success, low-probability risky actions, weaknesses in SWE-bench, multimodal pretraining, long-context RNN memory caching, context-parallel training efficiency, RL for CUDA kernel optimization, and latent introspection detecting concept injection.

A thank you to our current sponsors:

• Box - visit Box.com/AI to learn more

• ODSC AI - go to odsc.ai/east and use promo code LWAI for an additional 15% off your pass to ODSC AI East 2026.

• Factor - head to factormeals.com/lwai50off and use code lwai50off to get 50 percent off and free breakfast for a year

Timestamps:

• (00:00:10) Intro / Banter

• (00:01:23) Response to listener comments

• Tools & Apps

• (00:02:06) Perplexity’s Personal Computer turns your spare Mac into an AI agent | The Verge

• (00:04:22) Anthropic launches code review tool to check flood of AI-generated code | TechCrunch

• (00:08:08 ) Cursor is rolling out a new kind of agentic coding tool | TechCrunch

• (00:11:14) ChatGPT can now create interactive visuals to help you understand math and science concepts | TechCrunch

• (00:11:56) Anthropic’s Claude AI can respond with charts, diagrams, and other visuals now | The Verge

• Projects & Open Source

• (00:13:54) Introducing Nemotron 3 Super: An Open Hybrid Mamba-Transformer MoE for Agentic Reasoning | NVIDIA Technical Blog

• Applications & Business

• (00:21:22) Nvidia halts H200 production as China backs Huawei AI chips

• (00:28:33) Another XAI Cofounder Has Left, and Another Says He’s Leaving. - Business Insider

• (00:34:04) Anthropic’s Claude Marketplace allows customers to buy third-party cloud services | TechRadar

• (00:37:57) Yann LeCun’s AMI Labs raises $1.03 billion to build world models | TechCrunch

• (00:44:52) Humanoid robotics maker Sunday reaches $1.15B valuation to build household robots | TechCrunch

• Policy & Safety

• (00:46:09) Anthropic Sues Department of Defense Over ‘Supply Chain Risk’ Label - The New York Times + Google and OpenAI Just Filed a Legal Brief in Support of Anthropic

• (00:53:24) Internal Pentagon memo orders military commanders to remove Anthropic AI technology from key systems - CBS News

• (00:58:15) Endogenous Resistance to Activation Steering in Language Models

• (01:06:27) Reasoning Models Struggle to Control their Chains of Thought

• (01:09:52) ‘It means missile defence on datacentres’: drone strikes raise doubts over Gulf as AI superpower

• (01:14:57) Evidence for inference scaling in AI cyber tasks: Increased evaluation budgets reveal higher success rates

• (01:18:24) Frontier Models Can Take Actions at Low Probabilities

• Research & Advancements

• (01:24:20) Research note: Many SWE-bench-Passing PRs Would Not Be Merged into Main

• (01:28:26) [[2603.03276] Beyond Language Modeling: An Exploration of Multimodal Pretraining](https://arxiv.org/abs/2603.03276)

• (01:40:09) Memory Caching: RNNs with Growing Memory

• (01:48:47) Untied Ulysses: Memory-Efficient Context Parallelism via Headwise Chunking

• (01:58:41) CUDA Agent: Large-Scale Agentic RL for High-Performance CUDA Kernel Generation

• (02:08:57) Latent Introspection: Models Can Detect Prior Concept Injections

• (02:16:45) Physics of RL: Toy scaling laws for the emergence of reward-seeking