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DeepSeek V4 - almost on the frontier, a fraction of the price

Simon Willison’s WeblogHNCovered by23 min read
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Extract PDF text in your browser with LiteParse for the web

Simon Willison’s WeblogHN9 min read
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A pelican for GPT-5.5 via the semi-official Codex backdoor API

Simon Willison’s Weblog3 min read
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Is Claude Code going to cost $100/month? Maybe, maybe not—it’s all very confusing

Simon Willison’s WeblogHN2Covered by24 min read
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Where’s the raccoon with the ham radio? (ChatGPT Images 2.0)

Simon Willison’s WeblogHN2 min read
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Changes in the system prompt between Claude Opus 4.6 and 4.7

Simon Willison’s WeblogHN2Covered by24 min read
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Join us at PyCon US 2026 in Long Beach - we have new AI and security tracks this year

Simon Willison’s Weblog2 min read
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Qwen3.6-35B-A3B on my laptop drew me a better pelican than Claude Opus 4.7

Simon Willison’s WeblogHNCovered by32 min read
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Meta’s new model is Muse Spark, and meta.ai chat has some interesting tools

Simon Willison’s WeblogHN2
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Anthropic’s Project Glasswing—restricting Claude Mythos to security researchers—sounds necessary to me

Simon Willison’s WeblogHN
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The Axios supply chain attack used individually targeted social engineering

Simon Willison’s WeblogHN
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Highlights from my conversation about agentic engineering on Lenny’s Podcast

Simon Willison’s WeblogHNCovered by4
Simon Willison’s Weblog
Covered by4 sites
Talking Postgres with Claire Giordano, and more ›
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Mr. Chatterbox is a (weak) Victorian-era ethically trained model you can run on your own computer

Simon Willison’s WeblogHN2
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Vibe coding SwiftUI apps is a lot of fun

Simon Willison’s WeblogHN
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Experimenting with Starlette 1.0 with Claude skills

Simon Willison’s WeblogHN
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Profiling Hacker News users based on their comments

Simon Willison’s WeblogHN
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Thoughts on OpenAI acquiring Astral and uv/ruff/ty

Simon Willison’s WeblogHN
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GPT-5.4 mini and GPT-5.4 nano, which can describe 76,000 photos for $52

Simon Willison’s Weblog
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My fireside chat about agentic engineering at the Pragmatic Summit

Simon Willison’s WeblogHN
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Perhaps not Boring Technology after all

Simon Willison’s WeblogHN
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