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What's up, everyone? This week, Anthropic released what it claims is its most powerful model yet, OpenAI filed to go public, and TanStack released two new betas. Let's dive in.
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Anthropic released Claude Fable 5, its “most capable” model ever and the first "Mythos-class" model released to the public. It's state-of-the-art on nearly every benchmark they tested. The catch? It comes with the ability to hand your request off to the weaker Opus 4.8 whenever you ask about cybersecurity, biology, chemistry, and potentially even critical of Anthropic. Anthropic admits the filters are tuned aggressively enough to catch harmless questions. The other catch? Time with Fable 5 is limited. It’s included on paid plans only through June 22. After that you'll need usage credits until "capacity allows" them to put it back. A “best-ever model” you get to fully use for about two weeks.
The same week, Anthropic asked the government for the power to block AI models. Its new Policy on the AI Exponential wants regulators to be able to stop or deter "dangerous" frontier deployments, with penalties tied to global revenue. The only problem is that the company releasing the “most capable public model on the market” is also lobbying for rules aimed at the most capable models on the market.
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A week after Anthropic's own filing, OpenAI filed a confidential S-1 to go public, announcing it themselves because they "expect it to leak." The same day, it published a sweeping manifesto about distributing AI's benefits to everyone. The report goes light on the part where it reportedly loses around $1.22 for every dollar it earns and doesn't expect to be profitable until 2029. It also went shopping, acquiring Ona to give Codex secure, persistent cloud environments for agents.
TanStack AI hit beta. It’s a framework- and provider-agnostic toolkit that treats every modality (think text, images, audio, video) as one typed API. Switching from OpenAI to Anthropic is a one-line import change. It's built on the open AG-UI protocol with host-side MCP, and it's seeking to take on the Vercel AI SDK.
TanStack Table V9 also hit beta after a long rewrite. State management now finally plays nice with the React Compiler, it adds granular re-rendering so a row-selection change doesn't re-render your entire table, actual devtools, and much more. If you run big tables, this is the upgrade you've been waiting on.
Next.js opened the 16.3 preview line (preview.0), stabilizing export const prefetch, renaming the force-runtime prefetch option to allow-runtime, and flipping Turbopack's filesystem build cache on by default in non-stable builds.
Railway shipped Sandboxes, Infrastructure as Code (IaC), and a TypeScript SDK (changelog). Sandboxes are short-lived Linux environments you spin up from the dashboard or CLI which are handy for agent runners and test setups. IaC lets you define your whole project in a typed railway.ts file and preview changes before applying, and the Console tab is now GA.
Also this week:
Figma can now capture any webpage as editable layers through its Chrome extension. Copy a page, paste it onto the canvas, riff on it. Steal it, whatever you fancy. It’s a frictionless way to "reference" someone else's site, no coding agent required. It’s currently in beta and for paid plans only.
Payload released v3.85.1, a bug-fix patch that fixes draft save and duplicate behavior on upload-enabled collections, CSV import of arrays and rich text, and TypeScript 6 compatibility. No new features this round.
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