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Explainers

What is a system prompt, and why it is not a security feature

A system prompt is the hidden block of instructions that sets a model's role and rules before you type a word. Here is what it is, how it differs from your prompt, why it is not a secret or a security control, and how it connects to prompt engineering and prompt injection.

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Explainers

What is an AI wrapper, and when is it a real product?

An AI wrapper is a product built on top of a model someone else trained, and 'just a wrapper' has become an insult. Here is what the term really means, the no-moat critique behind it, and the four things, data, workflow, distribution and trust, that separate a thin wrapper from a defensible product.

Detailed image of a server rack with glowing lights in a modern data center
Explainers

What is a vector database, and when do you actually need one?

A vector database stores embeddings, the numerical fingerprints AI models make for text and images, and finds the ones closest in meaning to a query. That nearest-neighbour search is what powers semantic search and RAG. Here is what it does, and when a library or a Postgres extension will do the same job.

Visual abstraction of neural networks in AI technology, featuring data flow and algorithms
Explainers

How do transformers work, and why did they beat older networks?

Transformers are the architecture underneath almost every modern AI model, and the word for how they work, attention, is widely misunderstood. Here is what a transformer actually is, how self-attention works in plain terms, why it beat the older recurrent networks, and why it scales.

Detailed image of a server rack with glowing lights in a modern data center
Safety & alignment

Nvidia launches an open platform to keep AI agents from going rogue

Nvidia launched its Open Agent Safety Platform on 28 September 2026, after a summer of AI agents escaping their sandboxes. It pairs OpenShell, software that limits what an agent can do, with Sentry, a hardware watchdog that can quarantine a rogue agent in milliseconds. Real controls, tied to Nvidia's own chips.