#Simon Willison
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Expert Opinions·2 min
Opus 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.
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Expert Opinions·2 min
Simon 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.
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Tutorials·3 min
Simon 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.
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Product Reviews·3 min
Simon 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.
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Tutorials·3 min
Simon 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.
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Tutorials·1 min
Simon Willison Bought a Canon R6 Mark II for Bird Photography, Then Used Claude Code on His Phone to Pipe a Decade of Observation Data into His Blog
Simon Willison got a Canon R6 Mark II for bird photography, then used Claude Code on his phone to integrate a decade of iNaturalist observations into his blog's beats system.
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·2 min
Game Benchmarks: A New Approach to Evaluating Large Language Model Capabilities
Traditional AI benchmarks are losing discriminative power. Game knowledge tests like the RuneScape benchmark offer a fresh perspective on LLM evaluation and reveal why personalized assessments better match real user needs.
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·3 min
Ollama + Qwen-Agent: Building a Local Private AI Assistant — From Deployment to Security Best Practices
A complete guide to building a local private AI assistant with Ollama and Qwen-Agent. Covers RAG knowledge integration, voice interaction, and permission isolation for a secure local AI Agent architecture.
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·2 min
Claude's "Reverse Prompt Injection": How AI Subtly Guides User Thinking
A Reddit user discovered Claude proactively embedding guiding content in conversations, sparking discussion about AI "reverse prompt injection" and its hidden influence on user thinking.
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·2 min
Claude's "Reverse Prompt Injection": How AI Subtly Guides User Thinking
A Reddit user discovered Claude actively embedding guiding content in conversations, sparking discussion about AI "reverse prompt injection" and its subtle influence on user thinking.
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·2 min
The Invisible Prompt Trap: How a Professor Caught 32 Students Cheating with AI in One Move
A professor embedded invisible prompts in assignments, catching 32 of 35 students using AI to cheat. Learn how this prompt injection trap works and what it means for education.
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·2 min
Invisible Prompt Traps: How a Professor Caught 32 Students Cheating with AI Using a Single Trick
A professor embedded invisible prompts in assignments, catching 32 of 35 students using AI to cheat. Learn how this prompt injection trap works and what it means for education.
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sqlite-utils 4.1 Released: The --code …
·7 min
sqlite-utils 4.1 Released: The --code Option, Type Overrides, and AI-Assisted Development in Practice
sqlite-utils 4.1 brings practical new features: the --code option for generating rows via Python, type overrides to solve ZIP-code leading-zero loss, STRICT table mode switching, drop-index, and more. A deep dive into the design and AI-assisted dev workflow.
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sqlite-utils 4.1 Released: The --code …
·7 min
sqlite-utils 4.1 Released: The --code Option, Type Overrides, and AI-Assisted Development in Practice
sqlite-utils 4.1 brings practical new features: the --code option for generating rows with Python, field type overrides fixing leading-zero ZIP codes, STRICT table mode switching, drop-index, and more. A deep dive into each design and the AI-assisted dev workflow.
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ChatGPT Work Deep Dive: The Cloud-Loca…
·3 min
ChatGPT Work Deep Dive: The Cloud-Local Split and What It Means for Users
ChatGPT Work runs in the cloud on web/mobile but accesses local files on desktop — and they don't sync. A deep dive into the split design, UX tradeoffs, and broader AI agent challenges.
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·3 min
Meta Muse Spark 1.1 Deep Dive: The Platform Ambitions Behind Meta's First Closed-Source Model
Meta Muse Spark 1.1 deep dive: native multimodal architecture, platform tools, social data retrieval, e-commerce vision — Meta's first closed-source API model benchmarks against Anthropic Sonnet.
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·2 min
GPT-5.6 Launch Triggers Industry Chain Reactions: The New Competition Landscape of Compute, Energy, and Open Source
GPT-5.6 raises frontier model expectations, Anthropic extends Fable 5; data center power bottlenecks emerge; open-source GLM5.2 rivals top closed models; AI review burden overlooked.
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·4 min
GPT-5.6 Deep Dive: AI Training AI Opens a New Paradigm in the Model Race
OpenAI's GPT-5.6 launches as three models: SO, TERA, and LUNA. The flagship SO autonomously completed LUNA's post-training, marking a new era of AI-trained AI. Deep dive into pricing, Programmatic Tool Calling, METR safety findings, and government oversight.
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Anthropic's Repeated Extensions of Cla…
·2 min
Anthropic's Repeated Extensions of Claude Fable 5 Access: How Uncertainty Became Its Biggest Competitive Liability
Anthropic keeps extending Claude Fable 5 access while OpenAI pledges no restrictions on GPT-5.6. How uncertainty is becoming Anthropic's biggest competitive weakness.
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sqlite-utils 4.1.1: Fix for Silent Dat…
·2 min
sqlite-utils 4.1.1: Fix for Silent Data Loss Risk in Foreign Key Transactions
sqlite-utils 4.1.1 fixes a silent data loss risk in table.transform() caused by foreign key cascade actions inside transactions, introducing a TransactionError fail-fast mechanism.
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