We take Sesame Street very seriously. There's a character in every meeting room — a small reminder that we're building for the people outside the room, not the ones in it.

Our long term goal for @GoogleAIStudio is to eliminate the friction to build with AI, then do the same for your own business, and ultimately unlock economic opportunity for everyone. Feels like early innings but I keep getting more excited about this.

I had a chance to sit down with Demis Hassabis to discuss his goal of solving intelligence and using it to help cure all disease. But what I found most compelling wasn't the scale of the mission, but @demishassabis himself. His level of focus is extraordinary. We talked about the personal cost of pursuing a mission this ambitious, and the tension between the two sides of his work: the CEO of a commercial entity and the scientist driven by a humanitarian vision. It was an absolutely fascinating conversation, and a deep honor to speak with one of the most important minds of our time. Thank you to the @GoogleDeepMind team for having me. (0:00) Curing Every Disease in a Decade (1:04) Gemini for Science (2:01) Changing Science Forever with AlphaFold (4:04) Can Humans Trust AI In The Medical Field? (6:02) Generative AI vs. Practical AI (7:03) The Tension Between CEO & Scientist (8:28) AGI by 2030 (10:07) The Chess Prodigy Turned CEO (11:20) Ender's Game & What This Mission Has Cost

As AI agents begin to act, payments move into the background — at machine speed and massive scale. Today we’re introducing Mastercard Agent Pay for Machines — bringing structure, governance, and trust to this new class of payments. Launching with 30 partners to bring this to life from day one. This isn’t just more payments. It’s a new operating model for commerce. 👉 Learn more: mastercard.com/us/en/news-an…

This is a super exciting release - Claude Fable 5 is the same underlying model as Mythos but with added safeguards. The benchmarks are great and it's SOTA on everything by a margin but I'll add that *qualitatively* also, this is a major-version-bump-deserving step change forward (imo of the same order as Claude 4.5 was in November), peaking especially for long problem-solving sessions on very difficult problems. You can give it a lot more ambitious tasks than what you're used to, the model "gets it" and it will just go, and it's never felt this tempting to stop looking at the code at all (but don't do this in prod!). The model still has quirks that people will run into and the safeguards are configured to be a little too trigger happy for launch, which can hopefully be tuned over time. I feel a lot of things changing as working software increasingly comes out on a tap. The Jevon's paradox kicks in and I feel my own demand for software growing substantially. You can ask for anything - explainers, visualizers, dashboards, bespoke single-use apps (e.g. a full wandb that is hyper-specific just for your project), you can 10X your test suite, auto-optimize code, run giant research projects with custom HTML for the results, anything! "Free your mind" (Matrix ref). Really looking forward to all the things people build!

To celebrate the Fable 5 launch, we just reset 5-hour and weekly limits for all users across our products! Enjoy 🚀

🚨 Fable 5 is something to pay attention to. This is another "I had early access to the new Mythos-class Anthropic model and I want to tell you what I thought of it" post. I know, I know, it's annoying. But the way I now spend my weekends has completely changed because of this new class of model. And I need to share it with you all. - This is an actual leap. The jump from "4.8" anything to "5" anything just sounds small, but the functionality shift I felt is big. Within my first few prompts, I went, "Oh, this is it." - Your work is no longer 9-5. No chance. We have high performing models that can run for 100 hours. How are you giving complex goal-oriented prompts to these systems? How are you deciding what to kick off? How are you aligning your org on these tasks? - Reasoning on another level. I hammered the crap out of this model. Fable 5 is the ONLY model to answer a tricky word math problem (MBA-level) I have tested on all previous models. Not only did it get it correct, it verified its own work automatically AND explained where the assumptions might need to change. - We will see AI invent. I just cannot imagine a world where it doesn't. It is not a copy-paste system, and I would also argue that human invention can often be a recombination of pre-existing things (iPod), witnessing patterns and best practices across other spaces, and wide experimentation. I've thought this for awhile, this was the first model that slapped me in the face on it. - Zero babysitting needed. This was the first Anthropic model that I kicked off, went out to a long lunch with friends, kept my phone open, and didn't have to do squat to steer it while away from my computer. It just...worked. - Yap forever. I found it handled context compaction well. I didn't once think about the context of the chat and how to manage it and what to do once we hit 1M tokens in the conversation. - Still rough on some niche areas like complex 3D (like all models are). Unless you're making straight line things (3D dice/squares/streets), it's not going to crush it out the gate. Excited to keep using and hammering it. Note: there is now a 30-day retention policy on ALL Mythos-class models for workspaces with zero data retention (ZDR) in Claude Console, use Claude Code with ZDR in Claude Enterprise, or access Claude through AWS Bedrock, Google Cloud Agent Platform, or Microsoft Foundry with ZDR.

Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Its capabilities exceed those of any model we’ve ever made generally available.

Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Its capabilities exceed those of any model we’ve ever made generally available.