THIS WEEK IN AI: GPT Astra, OpenAI vs Cursor, The Truth About Data Centers

September 4, 2026

AI Summary

5 min read

This week on the Limitless Podcast, the hosts covered a whirlwind of AI developments, from the imminent release of OpenAI’s most powerful model yet to a new wave of cheaper, smarter models from Meta, Google, and Anthropic. A stunning new world model from Fei-Fei Li’s World Labs stole the show, while the hosts also unpacked the ongoing mystery of a leaked AI hardware device, the official rollout of Tesla’s Cybercab in Austin, and a $500 AI-powered toothbrush from James Dyson. The dominant theme is clear: the AI race has shifted from occasional giant leaps to a constant drumbeat of iterative, software-like upgrades.

The Frontier Model Race Heats Up

The biggest news is the rumored imminent release of OpenAI’s GPT Astra (also referred to as GPT-6) . The hosts note the model is likely already available to listeners by the time of publication. It is expected to be the new best-in-class model, potentially surpassing Anthropic’s recently released Claude 3.5 Sonnet and Claude 3 Opus. A key technical detail is a new training breakthrough called "recurring depth" or a "looped transformer architecture," which allows the network to run portions of itself repeatedly. This provides more computational depth without proportionally increasing the number of unique parameters.

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What you'll learn

1 (01:01) **OpenAI Astra (GPT-6) Imminent Release** - The hosts discuss the expected launch of OpenAI's most powerful model yet, rumored to be GPT-6 level, and the controversy around its training.
2 (04:08) **OpenAI Ends Partnership with Cursor** - OpenAI severs ties with Cursor after its acquisition by Elon Musk's SpaceX AI, escalating the rivalry between Sam Altman and Elon Musk.
3 (06:01) **Sam Altman Addresses Data Center Water Myths** - Altman pushes back on claims that AI data centers consume excessive water, comparing usage to almond farming.
4 (07:37) **Meta Releases Muse Spark 1.3** - Meta's fourth model release in five to six weeks, a specialized reasoning and coding model focused on cost efficiency.
5 (09:20) **Google Releases Gemini 3.8 Flash** - Google's latest cost-competitive model, but the hosts note Meta's model is actually better.
6 (10:20) **World Labs' Gaussian Splat World Model** - Fei-Fei Li's new company releases a revolutionary world model that generates 3D environments from still images or videos.
7 (15:21) **Anthropic Releases Claude Fable 5.1 and Mito's 5.1** - Two new models with significant cost reductions and improved reasoning capabilities.

+ Full timestamped outline available in the app

Show Notes

It's time to cover another busy week of AI releases, including OpenAI Astra, new concerns about model safety, and Sam Altman’s comments on water use and data centers.

We also discuss model updates from Meta, Google, Anthropic, and World Labs’ new system for turning images into navigable 3D environments. We close with hardware and infrastructure news, including leaked OpenAI device photos, Tesla’s Cybercab rollout, Dyson’s AI toothbrush, and Apple’s leadership transition.

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TIMESTAMPS

0:00 GPT Astra Release
0:58 GPT-6 and Training Breakthrough
4:07 Cursor Breakup Drama
7:36 Meta and Google Models
10:00 World Models Unleashed
15:21 Anthropic’s New Upgrades
18:18 Weekly Model Rundown
19:15 OpenAI Device Mystery
23:51 Rogue Cybersecurity Model
25:47 Data Centers Bring Revenue
28:05 CyberCabs Hit Austin
30:38 Dyson’s AI Toothbrush
33:06 Apple’s New Hardware Era
35:05 Week in Review

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RESOURCES

Josh: https://x.com/JoshKale

Ejaaz: https://x.com/cryptopunk7213

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Not financial or tax advice. See our investment disclosures here:
https://www.bankless.com/disclosures⁠

Josh works with Anthropic as a contractor. All views expressed are his own and do not represent Anthropic, its leadership, or its affiliates. Nothing in this episode is investment advice.