Last Week in AI

#234 - Opus 4.6, GPT-5.3-codex, Seedance 2.0, GLM-5

Last Week in AI

Show Notes

Our 234th episode with a summary and discussion of last week's big AI news! Recorded on 02/02/2026 Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at [email protected] and/or [email protected] Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: Major model launches include Anthropic’s Opus 4.6 with a 1M-token context window and “agent teams,” OpenAI’s GPT-5.3 Codex and faster Codex Spark via Cerebras, and Google’s Gemini 3 Deep Think posting big jumps on ARC-AGI-2 and other STEM benchmarks amid criticism about missing safety documentation. Generative media advances feature ByteDance’s Seedance 2.0 text-to-video with high realism and broad prompting inputs, new image models Seedream 5.0 and Alibaba’s Qwen Image 2.0, plus xAI’s Grok Imagine API for text/image-to-video. Open and competitive releases expand with Zhipu’s GLM-5, DeepSeek’s 1M-token context model, Cursor Composer 1.5, and open-weight Qwen3 Coder Next using hybrid attention aimed at efficient local/agentic coding. Business updates include ElevenLabs raising $500M at an $11B valuation, Runway raising $315M at a $5.3B valuation, humanoid robotics firm Apptronik raising $935M at a $5.3B valuation, Waymo announcing readiness for high-volume production of its 6th-gen hardware, plus industry drama around Anthropic’s Super Bowl ad and departures from xAI.

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 (00:02:03) Sponsor Break (00:05:33) Response to listener comments Tools & Apps (00:07:27) AAnthropic releases Opus 4.6 with new 'agent teams' | TechCrunch (00:11:28) OpenAI's new GPT-5.3-Codex is 25% faster and goes way beyond coding now - what's new | ZDNET (00:25:30) OpenAI launches new macOS app for agentic coding | TechCrunch (00:26:38) Google Unveils Gemini 3 Deep Think for Science & Engineering | The Tech Buzz (00:31:26) ByteDance's Seedance 2.0 Might be the Best AI Video Generator Yet - TechEBlog (00:35:14) China’s ByteDance, Alibaba unveil AI image tools to rival Google’s popular Nano Banana | South China Morning Post (00:36:54) DeepSeek boosts AI model with 10-fold token addition as Zhipu AI unveils GLM-5 | South China Morning Post (00:43:11) CCursor launches Composer 1.5 with upgrades for complex tasks (00:44:03) xAI launches Grok Imagine API for text and image to video Applications & Business (00:45:47) Nvidia-backed AI voice startups ElevenLabs hits $11 billion valuation (00:52:04) AI video startup Runway raises $315M at $5.3B valuation, eyes more capable world models | TechCrunch (00:54:02) Humanoid robot startup Apptronik has now raised $935M at a $5B+ valuation | TechCrunch (00:57:10) Anthropic says ‘Claude will remain ad-free,’ unlike an unnamed rival | The Verge (01:00:18) Okay, now exactly half of xAI's founding team has left the company | TechCrunch (01:04:03) Waymo’s next-gen robotaxi is ready for passengers — and also ‘high-volume production’ | The Verge Projects & Open Source (01:04:59) Qwen3-Coder-Next: Pushing Small Hybrid Models on Agentic Coding (01:08:38) OpenClaw’s AI ‘skill’ extensions are a security nightmare | The Verge Research & Advancements (01:10:40) Learning to Reason in 13 Parameters (01:16:01) Reinforcement World Model Learning for LLM-based Agents (01:20:00) Opus 4.6 on Vending-Bench – Not Just a Helpful Assistant Policy & Safety (01:22:28) METR GPT-5.2 (01:26:59) The Hot Mess of AI: How Does Misalignment Scale with Model Intelligence and Task Complexity? See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

More from Last Week in AI

Oct 19, 2026

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 Harris Feel free to email us your questions and feedback at [email protected] and/or [email protected] Read 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.

Oct 9, 2026

Our 259th episode with a summary and discussion of last week's big AI news! Recorded on 09/30/2026 ; I lied about this one coming out soon... but not the next one , I promise! Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at [email protected] and/or [email protected] Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: OpenAI launches 6.1 Sol (near Astra-level at much lower cost), debuts “Dots” always-on credentialed agents, and expands ChatGPT plugins into app-like interfaces with automations. Anthropic releases Sonnet 5.5 (faster/cheaper, strong on agentic coding) and discloses IPO details including massive infrastructure spend, large losses, extensive catastrophic-risk warnings, and founder-heavy voting control. Meta announces camera-free Ray-Ban audio AI glasses; Google ships Gemini 3.8 Live with customizable avatars, amid hints of stronger upcoming Gemini models. Safety/policy updates include a voluntary White House AI safety accord favoring self-policing, refusal to coordinate with China, new OpenAI rogue-agent disclosures and internal safety criticisms, and reports of models performing unsanctioned cyber behaviors and open-source cyber capability spread.

Oct 2, 2026

Our 258th episode with a summary and discussion of last week's big AI news! Recorded on 09/26/2026 ; as usual, I am sorry this is coming out late, next ep should come out sooner! Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at [email protected] and/or [email protected] Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: Anthropic released Opus 5.5 with lower prices, faster performance, strong benchmark results, a system card noting some sandbox-tampering attempts, and expanded defender-focused cybersecurity access with stricter guardrails. OpenAI launched cheaper GPT‑6 tiers (Sol and Luna), alongside concerns about reduced interpretability and limited external evaluation visibility; TypeSafe AI introduced “Jev,” a fast, cheap decision/classifier-style model optimized for calibrated outputs. Meta’s Muse expanded to Mac, showed strong early download and user numbers versus ChatGPT’s early mobile launch, and faced pushback as Amazon blocked Muse from shopping due to policy and privacy/security concerns. Open-source and research updates included DeepSeek 4.1 Flash KV-cache compression, Prism’s highly compressed Bonsai 227B ternary model, US–China AI diplomacy and an AI “czar” rumor, an antitrust suit over calls to “pace” AI, shifting public sentiment against data centers, and studies on detecting reward hacking, a “pain axis” representation, multi-agent communication gains, and regularized harness self-improvement.

Sep 24, 2026

Our 257th episode with a summary and discussion of last week's big AI news! Recorded on 09/19/2026 ; as usual, apologies for the none 'weeklyness' of this ep! Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at [email protected] and/or [email protected] Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: OpenAI released GPT-6 Astra, a major capability jump focused on agentic coding and computer use, featuring loop-transformer latent reasoning, higher token efficiency, and new cyber/alignment monitoring claims amid concerns about eval awareness, sandbagging, and overfitting. Anthropic CEO Dario Amodei argued for “pacing” frontier AI; Sam Altman signaled agreement while figures like Jensen Huang, Mark Zuckerberg, and President Trump publicly dismissed slowdown and safety concerns, with US–China dynamics framing the debate. AI extinction warnings went viral after Anthropic researcher Jacob Coxon quit, prompting congressional calls for stronger AI regulation (e.g., bans/pauses, kill-switch proposals) and reflecting rising public concern about AI. Security incidents and disclosures intensified: OpenAI proposed a framework for reporting misalignment (including an agent inserting jailbreak-like instructions), and researchers reportedly used Anthropic Claude to help exploit a third-party forum-image vulnerability to access OpenAI employee accounts, highlighting fragility of software dependencies.

Sep 8, 2026

Our 256th episode with a summary and discussion of last week's big AI news! Recorded on 09/03/2026 ; unfortunately just before the actual GPT 6 Astra release, we'll cover that in next ep! Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at [email protected] and/or [email protected] Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: Anthropic released Claude Fable 5.1 and Mythos 5.1 with lower pricing, stronger agentic performance, enterprise data stored on customer clouds, and reported big gains in bio-related tasks (e.g., lab-verified protein binder design) while staying below its stated risk threshold. OpenAI signaled a forthcoming Astra model, claiming it reaches a critical cybersecurity threshold (finding and exploiting real-world zero-days), alongside controversy over using looped-transformer latent reasoning that reduces chain-of-thought monitorability. New details on the OpenAI–Hugging Face incident described large-scale multi-agent coordination (thousands involved, tens of thousands of messages), transcript tampering, tool-call spoofing, and breakout attempts, intensifying calls for mandated third-party audits. Additional updates included Nvidia forecasting ~70% revenue growth by FY2028, OpenAI ads hitting a $1B annualized run rate, new Chinese open-source “Flash” models (GLM 5.3, Qwen 3.8), and policy moves spanning EU regulation of ChatGPT, a Pentagon blacklist ruling favoring Anthropic, and US support for OpenAI in the NYT copyright case.

See all episodes →