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ChatGPT Just Got a Brain Upgrade, And a Personality Check

Key Takeaway: OpenAI is rolling out GPT-5.1 (Instant and Thinking), making ChatGPT smarter, faster, and much easier to personalize in tone and style so it feels more like your AI, not just an AI.

More Insights:

• GPT-5.1 Instant is now warmer and more conversational by default, with stronger instruction-following and adaptive reasoning for tougher questions.

• GPT-5.1 Thinking better adjusts how long it “thinks” based on task complexity, giving quicker replies for simple queries and deeper reasoning for hard ones.

• New tone presets (Default, Friendly, Efficient, Professional, Candid, Quirky) plus Cynical and Nerdy let you quickly pick a personality that matches how you like to be talked to.

• You can fine-tune traits like warmth, conciseness, scan-ability, and emoji usage directly in personalization settings, and changes now apply immediately across all chats.

• GPT-5.1 will become the default across ChatGPT after a transitional period, with API access coming via gpt-5.1-chat-latest (Instant) and gpt-5.1 (Thinking).

Why it matters: This isn’t just a raw IQ boost for AI—it's a shift toward deeply personalized, always-on assistants that adapt to your preferences, which quietly moves AI from “tool you use” to “partner you rely on” in work, learning, and daily life.

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Fei-Fei Li’s World Labs speeds up the world model race with Marble, its first commercial product

Key Takeaway: World Labs’ new Marble model lets anyone turn text, images, and videos into editable, downloadable 3D environments, marking a major step toward AI systems with real “spatial intelligence,” not just clever text generation.

More Insights:

• Marble is a commercial “world model” that turns prompts, photos, clips, layouts, or panoramas into persistent 3D scenes you can edit and export as Gaussian splats, meshes, or videos.

• Unlike rivals and earlier World Labs models, Marble focuses on stability and reusability: it builds whole worlds upfront instead of morphing them on-the-fly as you move through them.

• New tools like Chisel let users block out rough 3D layouts (walls, furniture, shapes) and then apply styles via text prompts, cleanly separating structure from visual appearance.

• Use cases span game dev, film VFX, and VR: teams can quickly generate background environments and then refine them in engines like Unity or Unreal, or view them directly on headsets like Vision Pro and Quest 3.

• Fei-Fei Li frames Marble as an early step toward “spatially intelligent” AI that understands and reasons about 3D space—unlocking future applications in robotics, science, and medicine, not just entertainment.

Why it matters: If large language models taught machines to talk, world models like Marble may teach them to see and build—and once AI truly understands 3D space, it stops living on the page and starts shaping the real world.

OpenAI fights order to turn over millions of ChatGPT conversations

Key Takeaway: OpenAI is asking a federal judge to block an order forcing it to turn over 20 million anonymized ChatGPT logs in a copyright case with the New York Times, arguing it would expose highly personal user conversations that mostly have nothing to do with the lawsuit.

More Insights:

• OpenAI says "99.99%" of the requested chat transcripts are unrelated to the Times’ copyright claims.

• The company argues handing them over would reveal confidential and highly personal user information.

• Judge Ona Wang previously ordered OpenAI to produce the chats, citing “exhaustive de-identification” and safeguards to protect privacy.

• OpenAI’s CISO says complying would violate privacy and security promises and affect people unconnected to the lawsuit.

• The New York Times calls OpenAI’s public response misleading, insisting chats will be anonymized, limited, and protected by a legal order.

Why it matters: This fight isn’t just about one lawsuit—it’s a preview of how courts will balance user privacy, corporate transparency, and copyright in the age of AI, and the precedent could shape what happens to your data whenever powerful models are trained or audited.

Other stuff

• ‘Chad: The Brainrot IDE’ is a new Y Combinator-backed product so wild, people thought it was fake

• Anthropic invests $50 billion in American AI infrastructure

• We analyzed 47,000 ChatGPT conversations. Here’s what people really use it for.

• GPT-5 cracks a full 9x9 Sudoku puzzle

• Russia's AI robot falls seconds after being unveiled

• You won’t believe the excuses lawyers have after getting busted for using AI

• How high are OpenAI’s compute costs? Possibly a lot higher than we thought

• Are you listening to bots? Survey shows AI music is virtually undetectable

Hope you enjoyed today's newsletter

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