February 2026

Simon Willison

Wilson Lin on FastRender: a browser built by thousands of parallel agents

Wilson Lin discusses FastRender, a web browser built from scratch using thousands of coordinated AI agents as a research experiment. The project started as a personal exploration of frontier model...

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Simon Willison

Quoting Theia Vogel

A developer describes how they used ChatGPT to learn about state formation theory and applied circumscription theory to design conflict mechanics in their AI town simulation, where AI agents compete...

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Wes Roth

Claude "SOUL DOC" reveals something strange...

Anthropic has released Claude's Constitution, a 23,000-word document that defines how Claude should behave, but there's also a mysterious "soul document" that shaped Claude's psychological profile...

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Universe of AI

Zenflow: First-Ever AI Software Engineer Running Autonomously Building Apps and Software!

Zenflow is an AI software engineering system that coordinates multiple AI agents to build production-ready applications autonomously. Unlike simple prompt-based tools that break down with iteration,...

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Simon Willison

SSH has no Host header

This explains how exe.dev solves a fundamental SSH limitation where multiple VMs can't share IP addresses like web servers share domains. The key insight is that SSH lacks HTTP's Host header...

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Simon Willison

Qwen3-TTS Family is Now Open Sourced: Voice Design, Clone, and Generation

Qwen has open-sourced Qwen3-TTS, a family of advanced text-to-speech models that supports 3-second voice cloning across 10 languages. The models are freely available to anyone with a web browser,...

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Simon Willison

Quoting Chris Lloyd

Claude Code isn't just a simple terminal interface - it's actually a game engine architecture that renders React components into ANSI terminal output at 60fps with a 16ms frame budget. <div...

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Swift.org

Improving the usability of C libraries in Swift

Swift can directly use C libraries through interoperability, but the resulting code feels "C-like" and unsafe. Swift provides annotations that can transform C APIs into idiomatic Swift code without...

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Universe of AI

Antigravity + Opencode IS INCREDIBLE! Best AI Coding Workflow Solves EVERYTHING!

This video demonstrates how to combine Antigravity (Google's free agentic IDE) with OpenCode (an open-source AI coding agent) to create a comprehensive AI coding workflow. Combining these...

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Simon Willison

Claude's new constitution

Anthropic has officially released Claude's full "constitution" document - a comprehensive set of values and principles that was previously discovered as a leaked "soul document" baked into the model...

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