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Competition Is Why Our AI Bill Just Got 500x Cheaper
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Competition Is Why Our AI Bill Just Got 500x Cheaper

GPT-4-level intelligence costs 500 times less than it did in 2023. That didn't happen from one company getting generous, it happened because Anthropic, Google, Meta, and a wave of Chinese labs forced the price of capability into freefall. Here's the chart that proves it, and the research infrastructure behind why it's not slowing down.

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David's Stack

A collection of the tools, books, and research I'm currently using. Just the things that actually help me work better.

Current RotationJanuary 2026
The Age of Invisible Machines
book

The Age of Invisible Machines

"Essential reading for understanding the backend agentic shifts we are seeing. Robb Wilson breaks down conversational design patterns that actually scale."

Vercel AI SDK 4.0
tool

Vercel AI SDK 4.0

"The stream Protocol changes everything for React Server Components. If you aren't building with this, you're building legacy code."

Cognitive Architectures
article

Cognitive Architectures

"A deep dive into how memory systems are evolving beyond simple RAG vectors into semantic graphs. A must-read for architecture nerds."