There’s a lot to like about the Rationalist community, but they do have a certain tendency to spawn — shall we say — high demand groups. We sent a card-carrying Rat to investigate what’s really going on.

Five areas remain in drought with six more in prolonged dry weather

Google is killing a decade of its shortened links. Will you enlist in the fight against link rot?

Cortisol is a crucial hormone that regulates many important bodily functions like blood pressure and metabolism, and imbalances of this stress hormone can lead to health problems.

Exploits allow for persistent backdooring when targets open booby-trapped archive.

In mounting an unsolicited bid for Google’s browser, the AI startup seeks to take advantage of uncertainty over a pending antitrust ruling.

A slimmed-down version of the StarFive Vision Five 2 with a RISC-V quad core is available from 20 US dollars net. There are still problems with the software.

In May 2025, during the same week Neon announced their acquisition, our databases went down four times. For hours. Database spin-ups, their entire value proposition, were completely disabled. Our "serverless" databases couldn't even start.

That was the final…

It is an uncomfortable job for anyone trying to draw the line between “harmful content and protecting freedom of speech. It’s a balance”, Aaron says. In this official Facebook video, Aaron identifies himself as the manager of “the team that writes the rules…

Claude Sonnet 4 now supports up to 1 million tokens of context on the Anthropic API—a 5x increase.

Artificial intelligence (AI) developers are increasingly building language models with warm and empathetic personas that millions of people now use for advice, therapy, and companionship. Here, we...

End-to-end deep dive of the project, spanning a large GPU cluster, distributed RocksDB, and terabytes of sharded HNSW.

Omnara (YC S25) - Talk to Your AI Agents from Anywhere! - omnara-ai/omnara

Nexus serves as a central hub that aggregates MCP servers while providing intelligent LLM routing capabilities.

Fast, reliable long-context responses—for a price

Multimodal work-from-home environment on 60sqft: how much functionality can you fit into a really, really tiny space while still keeping it light?

As the stock prices of Big Tech companies continue to rise and eye-popping I.P.O.s reëmerge, echoes of the dot-com era are getting louder.

The biggest hurdle is not AI capability, but founder pain tolerance.