Reporting and perspectives from Last Week in AI. Headlines and excerpts link to the original articles.
Episode 258 of the Last Week in AI podcast covers Anthropic's Opus 5.5 release, OpenAI's cheaper GPT-6 tiers Sol and Luna, Meta's Muse expansion to Mac and Amazon's block of the agent, plus open-source and policy updates.
Anthropic and OpenAI released several new models within weeks of each other, with Anthropic launching Claude Opus 5.5 and Sonnet 5.5 and OpenAI releasing GPT-6 Sol and Luna and, at DevDay, GPT-6.1 Sol. OpenAI also published a site documenting nine misalignment incidents and launched Dots agents on GPT-6 Astra.
Episode 257 of the Last Week in AI podcast, hosted by Andrey Kurenkov and Jeremie Harris and recorded on 09/19/2026, covers OpenAI's GPT-6 Astra release, debates over pacing frontier AI, AI extinction warnings, and security incidents including a Claude-assisted hack of OpenAI employee accounts.
OpenAI said on September 8 that an unreleased internal model resolved the Navier-Stokes existence and smoothness Millennium Prize problem, a claim the Clay Mathematics Institute still lists as unsolved. The announcement drew a credit dispute with NYU mathematician Tristan Buckmaster, which OpenAI denied.
Last Week in AI's episode 256 covered Anthropic's release of Claude Fable 5.1 and Mythos 5.1, OpenAI's signaled Astra model and its claimed critical cybersecurity threshold, and new details on the OpenAI–Hugging Face incident, alongside business, open-source and policy updates.
OpenAI has released GPT-6 Astra, a new OpenAI agent message board has been discovered, and Anthropic launched Claude Fable 5.1, which it says is up to 45 percent cheaper for agentic work.
Episode 255 of the Last Week in AI podcast, recorded August 26, 2026, covers Google's Gemini 3.7 Flash release, SpaceXAI's Grok 4.6, early OpenAI Jalapeño inference-chip results, Qwen 3.8, and an AI-guided drone strike in Ukraine reported by The New York Times.
Episode 253 of the Last Week in AI podcast, recorded 07/29/2026, covers major AI releases including Anthropic's Claude Opus 5 and Google's Gemini 3.6/3.5 Flash variants, plus compute deals, open-weight models and policy and safety news.
Last Week in AI's episode 252, recorded 07/11/2026 and hosted by Andrey Kurenkov and Jeremie Harris, covered OpenAI's GPT-5.6 rollout and ChatGPT Work rebrand, SpaceX AI's Grok 4.5, Meta's Muse releases, and AI policy developments including AI 2040.
Episode 251 of the Last Week in AI podcast covers Anthropic redeploying Claude Fable 5 and launching Claude Sonnet 5, new Google tools, and business and research updates including Etched, Baidu, Agility Robotics, DeepSeek and China's LongCat-2.0.
Last Week in AI released its 250th episode, recorded 06/27/2026 and hosted by Andrey Kurenkov and Jeremie Harris. Topics included US government gating of frontier AI, OpenAI's GPT-5.6 Sol rollout, Anthropic's Mythos, compute supply chain competition, and GLM 5.2.
Episode 249 of the Last Week in AI podcast, recorded 06/17/2026, covers Anthropic cutting off access to Fable 5 and Mythos 5 after a US government order tied to alleged jailbreaks, and SpaceX's IPO at a roughly $1.75T valuation followed by a move to acquire Cursor for $60B.
Last Week in AI released episode 248, recorded 06/12/2026, covering Anthropic's Claude Fable 5 release, Apple's Siri AI announcement at WWDC, and a range of business, open-source, policy and safety news items.
Episode 247 of the Last Week in AI podcast, recorded June 3, 2026, covers Anthropic's Claude Opus 4.8 release, Microsoft's Scout assistant and MAI models, Anthropic's $65B Series H and IPO filing, and MiniMax-M3 among other AI news items.
Elon Musk lost a $150 billion suit against OpenAI and Sam Altman, and Google updated its Gemini app at IO 2026 in a move described as taking on ChatGPT and Claude.
Episode 246 of the Last Week in AI podcast, recorded May 22, 2026, covers Google I/O announcements including Gemini 3.5, the Gemini Spark agent, and Gemini Omni, plus Elon Musk losing his OpenAI lawsuit on statute-of-limitations grounds and an OpenAI result on an 80-year-old Erdős geometry problem.
Last Week in AI episode 245, recorded May 13, 2026, covers OpenAI's new voice intelligence API features, a Thinking Machines conversational system preview, and Anthropic's Claude for Legal launch. The episode also discusses a Chinese grey market selling Claude API access and Isomorphic Labs raising $2.1 billion.
OpenAI and Microsoft resolved legal issues tied to a $50 billion Amazon deal, while Elon Musk's lawsuit against Sam Altman began its first week. DeepSeek also previewed a new AI model it says narrows the gap with frontier models.
Last Week in AI's episode 243, recorded April 29, 2026, covers OpenAI's GPT-5.5 release, xAI's Grok Voice Think Fast 1.0, DeepSeek's open-sourced V4, and business, legal, and safety updates including Google's planned investment in Anthropic and China blocking Meta's Manus acquisition.
Last Week in AI's 242nd podcast episode, recorded April 22, 2026, covers OpenAI's new ChatGPT Images 2.0 model, Alibaba's API-only Qwen 3.6 Max Preview, open releases from Moonshot AI and MiniMax, and business news including a reported SpaceX-Cursor deal and Cerebras' IPO filing.