Uber tells London to get ready for robotaxis

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Uber is getting ready to put robotaxis on London’s streets, opening an interest list for riders who want to be among the first to hail one of Wayve’s autonomous vehicles when the service goes live later this year. The rollout would be a milestone in one of Uber’s biggest markets and an early test of … Read more

WWDC 2026: How to watch and what to expect

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Apple’s biggest event of the year is nearly here. The company’s Worldwide Developers Conference will spotlight updates to iOS, macOS, and all of Apple’s other operating systems, and this year’s event could also include a major overhaul for Siri. Here’s how you can watch along live. When WWDC will happen and where you can watch … Read more

Meet the Writer: Hacker Noon’s Contributor Matias Denda, Systems Engineer/Technical Architect

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Welcome to HackerNoon’s Meet the Writer Interview series, where we learn a bit more about the contributors that have written some of our favorite stories. So let’s start! Tell us a bit about yourself. For example, name, profession, and personal interests. I’m Matías, a Technical Architect from Argentina with over 14 years building backend systems … Read more

Your RAG System Might Be Confidently Wrong

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Most RAG confidence scores only describe the model output. They do not tell you whether the retrieved index was fresh, whether the source changed after indexing, or whether old embeddings are still being used. This article proposes a small retrieval-time trust layer that checks index freshness before the answer reaches the user.

Curing the Multi Agent Hallucination Contagion in Production Clusters

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In production multi-agent clusters, a hallucination from a single node can quickly act like a software contagion, spreading through shared memory and corrupting downstream tasks. To stop this cascading failure, engineers must implement a Circuit Breaker Pattern for semantic data. By routing all agent outputs through independent transaction managers, enforcing hard validation schemas, and requiring … Read more

Arjent AI Remembers (AAIR™) Turns Classic Car Records Into a Lasting Vehicle Legacy

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:::info Welcome to the Proof of Usefulness Hackathon spotlight, curated by HackerNoon’s editors to showcase noteworthy tech solutions to real-world problems. Whether you’re a solopreneur, part of an early-stage startup, or a developer building something that truly matters, the Proof of Usefulness Hackathon is your chance to test your product’s utility, get featured on HackerNoon, … Read more