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    Home»Free AI Tools»OpenAI’s GPT-5.4-Cyber rejects Mythos playbook
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    OpenAI’s GPT-5.4-Cyber rejects Mythos playbook

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    Good morning, {{ first_name | AI enthusiasts }}. OpenAI cyber researcher Fouad Matin kept the pitch blunt: “no one should be in the business of picking winners and losers” on who gets to defend their systems.

    That’s a direct shot at Anthropic’s Mythos rollout, capped at a 40-org whitelist of tech giants. With GPT-5.4-Cyber, OpenAI is going the opposite way — betting that arming more defenders beats restricting access to a handful of giants.

    P.S. Our upcoming AI Growth Systems course for non-technical operators goes live today, covering everything from competitor intelligence agents to Reddit opportunity finders across three hands-on sessions. Exclusive to Premium and trial members. Learn more and enroll here.

    • OpenAI counters Mythos playbook with GPT-5.4-Cyber

    • Nvidia ships open-source AI for quantum computing

    • Automate your Chrome browser with Gemini

    • Anthropic gives Claude Code a desktop makeover

    • 4 new AI tools, community workflows, and more

    OPENAI

    Image source: Lovart / The Rundown

    The Rundown: OpenAI just introduced GPT-5.4-Cyber, a more permissive version of its flagship model built for defensive security work — responding to Anthropic’s Mythos release last week with a much wider rollout targeting thousands of verified defenders.

    • OAI is opening access to anyone who passes ID checks via its Trusted Access for Cyber initiative, while Mythos is limited to just 40+ trusted partners.

    • The new model can reverse-engineer compiled software to flag malware or security flaws, letting analysts inspect programs without the original code.

    • OpenAI researcher Fouad Matin called cyber defense a “team sport,” arguing “no one should be in the business of picking winners and losers.”

    • Treasury Secretary Bessent summoned Wall Street leaders to an emergency Mythos briefing last week, with concerns growing over its hacking capabilities.

    Why it matters: It’s not yet clear how Cyber will stack up to Mythos’ monster benchmark scores, but it’s clear that the next generation of model upgrades is about to have some serious implications for cybersecurity. And the two rivals are taking very different approaches to how accessible each company’s advanced defense models are.

    TOGETHER WITH UNWRAP

    The Rundown: Oura’s customer feedback was scattered across the organization — until Unwrap brought it all together. Now they can surface recurring themes, proactively prioritize what actually matters, and continuously improve their members’ experience in ways they never could before.

    • All customer feedback automatically categorized

    • Query feedback using Unwrap Assistant, or in your favorite tools via MCP

    • Real-time alerts from feedback as they arise, and a clear view of customer sentiment

    • A platform trusted and tested at scale by DoorDash, Stripe, Clay, lululemon and more

    NVIDIA

    The Rundown: Nvidia released Ising, the first family of open-source AI models designed to work with quantum computers — built to tackle technical problems like calibration and error decoding that have kept the tech from scaling out of the lab.

    • The first Ising model keeps the machines tuned automatically, turning what used to be a days-long manual job into something that takes hours.

    • The second fixes errors as they happen, hitting 2.5x the speed and 3x the accuracy of today’s best open-source alternative.

    • Nvidia CEO Jensen Huang called it “the operating system of quantum machines,” pitching AI as the missing layer that makes the tech scalable.

    • 20+ institutions are already using Ising at launch, including Harvard, Cornell, Fermilab, Sandia National Labs, IonQ, and UC Santa Barbara.

    Why it matters: Nvidia ran the same playbook here that it used for self-driving cars (Alpamayo) and robotics (Isaac GR00T): release the open AI layer, lock in the ecosystem, own the infrastructure beneath a new computing paradigm. The company is planting its flag in a projected $11B quantum market before the race really starts.

    AI TRAINING

    The Rundown: In this guide, you will learn how to turn on and use our favorite Gemini in Chrome features. If you have a Google AI Pro subscription, you will learn how to turn on and use Chrome automations.

    1. In Chrome, go to Settings > AI Innovations > Gemini in Chrome, and enable “Show Gemini at the top of the browser” and “Share current tab with Gemini”. If on Google AI Pro, also enable “Let Gemini browse for you”

    2. Open three product tabs, click Gemini, type @ to attach tabs, and prompt: “Compare [products] and tell which offers the best features for the best price”

    3. Gemini will compare and give you a recommendation. This works even without Google AI Pro because you are sharing the tabs directly

    4. If you have AI Pro, prompt: “Find me a cheaper [product type] with these same features.” Gemini will send you a plan, then use Chrome to execute it for you

    Pro tip: With Google AI Pro, you can even ask Gemini to sign in to your accounts using saved Chrome passwords.

    PRESENTED BY TELY AI

    The Rundown: Your buyers are asking AI questions — and AI is answering with your competitors, not you. Tely makes AI like ChatGPT, Google, and Claude recommend your business instead.

    • Get recommended in ChatGPT, Google, Perplexity, and Claude in as little as 1 week

    • Fully hands-off: no writers, no agencies, no managing content

    • Costs less than hiring freelancers or maintaining a marketing team

    • Ideal for niche industries where expertise matters

    ANTHROPIC

    The Rundown: Anthropic introduced a redesign to Claude Code’s desktop app built around the reality that devs now run multiple AI sessions at once, adding a sidebar for managing them, new drag-and-drop panes, and an integrated editor and terminal.

    • A new sidebar keeps all live and recent sessions in view, with filters by status or project and the ability to auto-archive once a pull request is closed or merged.

    • A drag-and-drop layout now allows users to customize the workspace and monitor multiple windows at once, with more reliability and speed.

    • Developers can now run tests, edit files, review Claude’s changes, and preview HTML or PDFs without switching to another tool.

    • Anthropic also launched routines in Claude Code, a new research preview that runs AI tasks on a schedule, via API, or whenever certain GitHub events happen.

    Why it matters: The Claude Code redesign and routines both paint the same picture — Anthropic thinks devs are about to spend less time coding and more time using a team of AI agents. Pair routines with the parallel-session redesign, and Claude Code starts looking more like a command center for a half-human, half-AI workforce.

    • ⚡ Lightfield – AI-native CRM that auto-captures emails, calls, and meetings—then answers any question about your business.*

    • 💻 Claude Code – Anthropic’s revamped desktop app for parallel agents

    AI personal finance startup Hiro announced that it is winding down operations, with its staff joining OpenAI.

    AWS rolled out Amazon Bio Discovery, a new drug-design platform with biological foundation models and a built-in lab network for synthesis and testing.

    UK AI safety evaluators said Claude Mythos Preview is the first AI to complete their 32-step corporate hack simulation, showing big jumps in cyber-attacks over Opus 4.6.

    Baidu released ERNIE-Image, an 8B open-weight text-to-image model that nears top rivals on benchmarks despite its small size.

    OpenAI’s Greg Brockman framed AI as the shift to a “compute-powered economy,” claiming ~1B weekly ChatGPT and Codex users on the company’s 10th anniversary.

    Every newsletter, we showcase how a reader is using AI to work smarter, save time, or make life easier.

    Today’s workflow comes from reader Will G. in Nashville, TN:

    “At almost 70 years old, I dove into ChatGPT at work. I used it to develop a system using Microsoft Forms, Lists, and Power Automate to put a QR-based product item tracking system in place without purchasing scanners.

    The guys on the dock and delivery drivers scan the QR, and we get real-time product tracking. Now the oldest guy at work is considered the ‘AI Guy’.”

    How do you use AI? Tell us here.

    That’s it for today!

    Before you go we’d love to know what you thought of today’s newsletter to help us improve The Rundown experience for you.

    Rowan, Joey, Zach, Shubham, and Jennifer—the humans behind The Rundown

    GPT5.4Cyber Mythos OpenAIs playbook rejects
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