#Simon Willison
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TutorialsSimon Willison Uses Phone + Claude Code to Add Wildlife Observation Feature to His Blog
Simon Willison used Claude Code's web version on his phone to add iNaturalist wildlife observation records to his blog. Analysis of the technical implementation, Beats content aggregation system, and how AI-assisted coding breaks mobile development barriers.
Expert OpinionsOpus 4.7 and GPT-5.5 Price Hikes in Sync: The AI Model Pricing Inflection Point Has Arrived
Analysis of Simon Willison's April 2026 newsletter: Opus 4.7 and GPT-5.5 launch with price hikes, Claude Mythos debuts, ChatGPT Images 2.0 upgrades. Deep dive into AI pricing tiers and LLM security.
Tech FrontiersLLM 0.32a1 Released: Fixing the SQLite Storage Bug for Tool-Calling Conversations
Simon Willison releases LLM CLI tool v0.32a1, fixing a data integrity bug when reloading tool-calling conversations from SQLite. Details on the fix, impact, and upgrade steps.
Expert OpinionsOpus 4.7 and GPT-5.5 Launch: Simon Willison's April Newsletter Breaks Down AI Frontier Developments
Simon Willison's April 2026 newsletter: Claude Opus 4.7, GPT-5.5 price hikes, Claude Mythos, ChatGPT Images 2.0, and the latest in LLM safety research.
Expert OpinionsSimon Willison's April Newsletter: Opus 4.7, GPT-5.5 Launches, and AI Industry Trends
Simon Willison's April 2026 monthly newsletter: Anthropic Opus 4.7 and OpenAI GPT-5.5 launch with price hikes, Claude Mythos safety research, ChatGPT Images 2.0, and key AI trends.
TutorialsSimon Willison Uses Claude Code on His Phone to Add Wildlife Observation Features to His Blog
Simon Willison used Claude Code's web version on his phone to add iNaturalist wildlife observation sync to his blog, going from prototype to production in just two days.
Product ReviewsSimon Willison Ships Blog Wildlife Sightings Feature in Two Days Using Claude Code on His Phone
Simon Willison used Claude Code's web version on his phone to build an iNaturalist wildlife sighting sync feature for his blog in two days, with search, pagination, RSS, and 10 years of backfilled data.
TutorialsSimon Willison Uses His Phone and Claude Code to Add Wildlife Sightings to His Blog
Developer Simon Willison used Claude Code for Web on his phone to build a wildlife sightings feature for his blog, syncing iNaturalist data with deep integration into search, RSS, and archives.
Deep DivesLLM 0.32 Refactoring Deep Dive: Message Sequence Input and Streaming Multi-Type Response Design
Deep dive into Simon Willison's LLM 0.32a0 refactoring: message sequence inputs, streaming typed events, tool calling loops, and serialization for modern multimodal LLM scenarios.