The Frontier edition

The Frontier · 2 Nov 2026

2 Nov 2026 · 15 articles

Building a multiplayer game world with autonomous Fable-class models

How I Built the Most AI-Pilled Company in the World Don't be put off by the clickbait headline, this piece by Jacob Sansbury describing how they are building Spawn is a fascinating exploration of the bleeding edge of what's possible with agentic engineering against frontier models. Spawn is a massively multiplayer gaming environment where players can use prompts (to the in-game agent, Savi) to…

Summary published by Simon Willison's Weblog · 29 Oct 2026 · Read the original ↗

The AI cost of JavaScript frameworks

Article URL: https://nolanlawson.com/2026/10/28/the-ai-cost-of-javascript-frameworks/ Comments URL: https://news.ycombinator.com/item?id=50323088 Points: 336 # Comments: 258

Summary published by Hacker News - Newest: "AI" · 1 Nov 2026 · Read the original ↗

datasette-llm 0.1a9

Release: datasette-llm 0.1a9 I have some big upgrades to Datasette Agent in the pipeline, but in the meantime here's a tiny user experience improvement to the underlying datasette-llm plugin. It now picks up the default model used by LLM , which means you can start using Datasette Agent without needing to explicitly configure a default model: uvx --with datasette-agent datasette content.db…

Summary published by Simon Willison's Weblog · 31 Oct 2026 · Read the original ↗

dbreunig/nesformer

Inspired by qwenputer by Divyansh Agrawal, Drew Breunig baked a working emulator for a Nintendo Entertainment System 6502 CPU into the weights of Qwen3.5-4B. You can now play NES ROMs such as Super Mario Bros (very slowly) running inside Qwen! In a comment on Hacker News Drew reveals the Opus 5.5 prompts he used to build this system: Read this article and any relevant source code…

Summary published by Simon Willison's Weblog · 30 Oct 2026 · Read the original ↗

API credits benefit for eligible ChatGPT subscriptions

Earlier this month Anthropic announced a generous new benefit for their Max and Team subscriptions: $100, $200, and $500 per month subscribers would get the equivalent quantity of (expiring) credits to use with the Anthropic API. OpenAI have now launched pretty much exactly the same deal: if you have a $100, $200, or $500 subscription plan with them you now get that same quantity of credits to…

Summary published by Simon Willison's Weblog · 29 Oct 2026 · Read the original ↗

How We Built Our Design Agent

How LangChain built Content Studio, an open-source design agent in Slack that makes on-brand videos, graphics and decks, and the harness that powers it.

Summary published by LangChain Blog · 29 Oct 2026 · Read the original ↗

The Art of Loop Engineering

Agents automate real-world work, but reliable performance requires more than a good model, it requires a carefully designed harness built for specific tasks. This post explores the core agent loop, how stacking and extending loops builds more effective agents, and how to instrument each level with LangChain primitives.

Summary published by LangChain Blog · 28 Oct 2026 · Read the original ↗