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My review of Claude's new Code Interpreter, released under a very confusing name

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Recreating the Apollo AI adoption rate chart with GPT-5, Python and Pyodide

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GPT-5 Thinking in ChatGPT (aka Research Goblin) is shockingly good at search

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V&A East Storehouse and Operation Mincemeat in London

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The Summer of Johann: prompt injections as far as the eye can see

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Open weight LLMs exhibit inconsistent performance across providers

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LLM 0.27, the annotated release notes: GPT-5 and improved tool calling

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Qwen3-4B-Thinking: "This is art - pelicans don't ride bikes!"

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My Lethal Trifecta talk at the Bay Area AI Security Meetup

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The surprise deprecation of GPT-4o for ChatGPT consumers

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GPT-5: Key characteristics, pricing and model card

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OpenAI's new open weight (Apache 2) models are really good

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ChatGPT agent's user-agent

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ChatGPT agent triggers crawls from Bingbot and Yandex

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The ChatGPT sharing dialog demonstrates how difficult it is to design privacy preferences

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Reverse engineering some updates to Claude

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Trying out Qwen3 Coder Flash using LM Studio and Open WebUI and LLM

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My 2.5 year old laptop can write Space Invaders in JavaScript now

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Using GitHub Spark to reverse engineer GitHub Spark

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Scraping and vibe coding a schedule app for Open Sauce 2025 entirely on my phone

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