Sponsor of the Day:
Jerkmate
https://simonwillison.net/tags/gpt-5/
Simon Willison on gpt-5
30 posts tagged ‘gpt-5’.
simon willisongpt 5
https://simonwillison.net/tags/ai2/
Simon Willison on ai2
6 posts tagged ‘ai2’. Ai2 is the Allen Institute for Artificial Intelligence.
simon willisonai2
https://simonwillison.net/tags/whisper/
Simon Willison on whisper
19 posts tagged ‘whisper’.
simon willisonwhisper
https://simonwillison.net/tags/google/
Simon Willison on google
401 posts tagged ‘google’.
simon willisongoogle
https://simonwillison.net/tags/playwright/
Simon Willison on playwright
13 posts tagged ‘playwright’.
simon willisonplaywright
https://simonwillison.net/tags/chatbot-arena/
Simon Willison on chatbot-arena
25 posts tagged ‘chatbot-arena’. The Chatbot Arena ranks LLMs based on votes from a community of users for the best response from anonymized model pairs.
simon willisonchatbot arena
https://simonwillison.net/tags/github-copilot/
Simon Willison on github-copilot
15 posts tagged ‘github-copilot’. GitHub Copilot is GitHub's extension for VS Code that uses LLMs to provide context-driven code completion suggestions.
simon willisongithub copilot
https://simonwillison.net/tags/gpt-2/
Simon Willison on gpt-2
13 posts tagged ‘gpt-2’.
simon willisongpt 2
https://simonwillison.net/tags/evals/
Simon Willison on evals
42 posts tagged ‘evals’. Evaluations and benchmarks of AI systems, for example to compare different models and prompting strategies.
simon willisonevals
https://simonwillison.net/tags/facebook/
Simon Willison on facebook
118 posts tagged ‘facebook’.
simon willisonfacebook
https://simonwillison.net/tags/glm/
Simon Willison on glm
8 posts tagged ‘glm’. The GLM family of LLMs from Z.ai.
simon willisonglm
https://simonwillison.net/tags/newsletter/
Simon Willison on newsletter
16 posts tagged ‘newsletter’. Posts about my weekly newsletter or monthly newsletter for sponsors.
simon willisonnewsletter
https://simonwillison.net/tags/ai-agents/
Simon Willison on ai-agents
108 posts tagged ‘ai-agents’. AI agents can mean a lot of different things. These days I think of them as LLMs calling tools in a loop to achieve a goal.
simon willisonai agents
https://simonwillison.net/tags/codex-cli/
Simon Willison on codex-cli
29 posts tagged ‘codex-cli’. OpenAI's Codex CLI tool, not the same thing as Codex cloud.
simon willisoncodex cli
https://simonwillison.net/tags/http/
Simon Willison on http
101 posts tagged ‘http’.
simon willisonhttp
https://simonwillison.net/tags/sam-rose/
Simon Willison on sam-rose
5 posts tagged ‘sam-rose’.
simon willisonsamrose
https://simonwillison.net/tags/embeddings/
Simon Willison on embeddings
60 posts tagged ‘embeddings’. See Embeddings: What they are and why they matter.
simon willisonembeddings
https://simonwillison.net/tags/internet-archive/
Simon Willison on internet-archive
16 posts tagged ‘internet-archive’.
simon willisoninternet archive
https://simonwillison.net/tags/phishing/
Simon Willison on phishing
54 posts tagged ‘phishing’.
simon willisonphishing
https://simonwillison.net/tags/charlie-marsh/
Simon Willison on charlie-marsh
9 posts tagged ‘charlie-marsh’.
simon willisoncharliemarsh
https://simonwillison.net/tags/max-woolf/
Simon Willison on max-woolf
20 posts tagged ‘max-woolf’.
simon willisonmax woolf
https://simonwillison.net/tags/enrichments/
Simon Willison on enrichments
9 posts tagged ‘enrichments’.
simon willisonenrichments
https://simonwillison.net/tags/speaking/
Simon Willison on speaking
119 posts tagged ‘speaking’.
simon willisonspeaking
https://simonwillison.net/tags/mitchell-hashimoto/
Simon Willison on mitchell-hashimoto
7 posts tagged ‘mitchell-hashimoto’.
simon willisonmitchell hashimoto
https://til.simonwillison.net/llms
Simon Willison: TILs on llms
simon willison tilsllms
https://simonwillison.net/guides/agentic-engineering-patterns/how-coding-agents-work/
How coding agents work - Agentic Engineering Patterns - Simon Willison's Weblog
How coding agents work - Agentic Engineering Patterns
agentic engineering patternscoding agentssimon willisonworkweblog
https://simonwillison.net/tags/go/
Simon Willison on go
51 posts tagged ‘go’. The Go programming language.
simon willisongo
https://simonwillison.net/tags/svg/
Simon Willison on svg
53 posts tagged ‘svg’.
simon willisonsvg
https://simonwillison.net/tags/kakapo/
Simon Willison on kakapo
9 posts tagged ‘kakapo’.
simon willison
https://simonwillison.net/tags/nathan-lambert/
Simon Willison on nathan-lambert
4 posts tagged ‘nathan-lambert’.
simon willisonnathan lambert
https://simonwillison.net/tags/prompt-engineering/
Simon Willison on prompt-engineering
182 posts tagged ‘prompt-engineering’. The subtle art and craft of effectively prompting and building software on top of LLMs.
simon willisonprompt engineering
https://simonwillison.net/tags/mastodon/
Simon Willison on mastodon
36 posts tagged ‘mastodon’.
simon willisonmastodon
https://simonwillison.net/tags/leaflet/
Simon Willison on leaflet
46 posts tagged ‘leaflet’. The Leaflet JavaScript library for interactive maps.
simon willisonleaflet
https://simonwillison.net/tags/http-range-requests/
Simon Willison on http-range-requests
12 posts tagged ‘http-range-requests’. Fun tricks with the HTTP Range header.
simon willisonrange requestshttp
https://simonwillison.net/tags/openclaw/
Simon Willison on openclaw
9 posts tagged ‘openclaw’. OpenClaw is an open source agent tool that integrates with multiple messaging platforms while running on your own device.
simon willisonopenclaw
https://simonwillison.net/tags/system-prompts/
Simon Willison on system-prompts
50 posts tagged ‘system-prompts’. The hidden prompts that LLM applications use to specify how they should behave.
simon willisonsystem prompts
https://simonwillison.net/tags/nvidia/
Simon Willison on nvidia
16 posts tagged ‘nvidia’.
simon willisonnvidia
https://simonwillison.net/tags/ubuntu/
Simon Willison on ubuntu
23 posts tagged ‘ubuntu’.
simon willisonubuntu
https://simonwillison.net/tags/django/
Simon Willison on django
588 posts tagged ‘django’. The Django web framework.
simon willisondjango
https://krebsonsecurity.com/tag/simon-willison/
Simon Willison – Krebs on Security
simon willisonkrebssecurity
https://til.simonwillison.net/deno
Simon Willison: TILs on deno
simon willison tilsdeno
https://simonwillison.net/tags/ec2/
Simon Willison on ec2
44 posts tagged ‘ec2’.
simon willisonec2
https://simonwillison.net/tags/grok/
Simon Willison on grok
12 posts tagged ‘grok’. The Grok family of LLMs from xAI.
simon willisongrok
https://simonwillison.net/tags/mark-pilgrim/
Simon Willison on mark-pilgrim
91 posts tagged ‘mark-pilgrim’.
simon willisonmarkpilgrim
https://simonwillison.net/tags/microsoft/
Simon Willison on microsoft
126 posts tagged ‘microsoft’.
simon willisonmicrosoft
https://simonwillison.net/tags/podcast-appearances/
Simon Willison on podcast-appearances
38 posts tagged ‘podcast-appearances’. Times when I went on a podcast.
simon willisonpodcast appearances
https://simonwillison.net/tags/github/
Simon Willison on github
183 posts tagged ‘github’.
simon willisongithub
https://simonwillison.net/tags/prompt-to-app/
Simon Willison on prompt-to-app
39 posts tagged ‘prompt-to-app’. Tools that build you a full working application based on a prompt.
simon willisonpromptapp
https://simonwillison.net/tags/careers/
Simon Willison on careers
73 posts tagged ‘careers’.
simon willisoncareers
https://simonwillison.net/tags/qwen/
Simon Willison on qwen
53 posts tagged ‘qwen’. Qwen is the Large Language Model family built by Alibaba Cloud.
simon willisonqwen
https://simonwillison.net/tags/c/
Simon Willison on c
51 posts tagged ‘c’.
simon willisonc
https://simonwillison.net/tags/projects/
Simon Willison on projects
524 posts tagged ‘projects’. Posts about projects I have worked on.
simon willisonprojects
https://simonwillison.net/tags/openrouter/
Simon Willison on openrouter
24 posts tagged ‘openrouter’.
simon willisonopenrouter
https://simonwillison.net/tags/mistral/
Simon Willison on mistral
66 posts tagged ‘mistral’. Mistral AI release both openly licensed and API-hosted Language Models.
simon willisonmistral
https://simonwillison.net/tags/apple/
Simon Willison on apple
129 posts tagged ‘apple’.
simon willisonapple
https://simonwillison.net/tags/definitions/
Simon Willison on definitions
51 posts tagged ‘definitions’. Attempts to assign meaning to words and phrases.
simon willisondefinitions
https://simonwillison.net/tags/iphone/
Simon Willison on iphone
63 posts tagged ‘iphone’.
simon willisoniphone
https://simonwillison.net/tags/training-data/
Simon Willison on training-data
61 posts tagged ‘training-data’. Data used to train LLMs and other machine learning models.
simon willisontraining data
https://simonwillison.net/tags/software-engineering/
Simon Willison on software-engineering
62 posts tagged ‘software-engineering’.
simon willisonsoftware engineering
https://simonwillison.net/tags/lethal-trifecta/
Simon Willison on lethal-trifecta
25 posts tagged ‘lethal-trifecta’. Any time you grant an LLM-based system access to private data, exposure to untrusted content, and the ability to externally...
simon willisonlethal trifecta
https://simonwillison.net/tags/museums/
Simon Willison on museums
144 posts tagged ‘museums’.
simon willisonmuseums
https://simonwillison.net/guides/agentic-engineering-patterns/what-is-agentic-engineering/
What is agentic engineering? - Agentic Engineering Patterns - Simon Willison's Weblog
What is agentic engineering? - Agentic Engineering Patterns
agentic engineering patternssimon willisonweblog
https://simonwillison.net/tags/fly/
Simon Willison on fly
38 posts tagged ‘fly’.
simon willisonfly
https://simonwillison.net/tags/exfiltration-attacks/
Simon Willison on exfiltration-attacks
43 posts tagged ‘exfiltration-attacks’. Exfiltration attacks are prompt injection attacks against chatbots that have access to private information, where that...
simon willisonexfiltrationattacks
https://hachyderm.io/@timmywil
Timmy Willison (@timmywil@hachyderm.io) - Hachyderm.io
54 Posts, 49 Following, 132 Followers · Team Lead for jQuery Core, Panzoom creator, writes code.
hachyderm iotimmywillison
https://simonwillison.net/guides/agentic-engineering-patterns/subagents/
Subagents - Agentic Engineering Patterns - Simon Willison's Weblog
Subagents - Agentic Engineering Patterns
agentic engineering patternssimon willisonsubagentsweblog
https://simonwillison.net/tags/ai-ethics/
Simon Willison on ai-ethics
287 posts tagged ‘ai-ethics’. Ethical concerns related to building and using AI systems.
simon willisonai ethics
https://simonwillison.net/guides/agentic-engineering-patterns/red-green-tdd/
Red/green TDD - Agentic Engineering Patterns - Simon Willison's Weblog
Red/green TDD - Agentic Engineering Patterns
agentic engineering patternsred greensimon willisontddweblog
https://simonwillison.net/guides/agentic-engineering-patterns/
Agentic Engineering Patterns - Simon Willison's Weblog
agentic engineering patternssimon willisonweblog
https://simonwillison.net/tags/sandboxing/
Simon Willison on sandboxing
37 posts tagged ‘sandboxing’.
simon willisonsandboxing
https://simonwillison.net/tags/performance/
Simon Willison on performance
95 posts tagged ‘performance’.
simon willisonperformance
https://simonwillison.net/tags/hugging-face/
Simon Willison on hugging-face
22 posts tagged ‘hugging-face’.
simon willisonhugging face
https://simonwillison.net/tags/packaging/
Simon Willison on packaging
47 posts tagged ‘packaging’.
simon willisonpackaging
https://simonwillison.net/tags/ethics/
Simon Willison on ethics
152 posts tagged ‘ethics’.
simon willisonethics
https://simonwillison.net/tags/cors/
Simon Willison on cors
27 posts tagged ‘cors’. CORS is Cross-origin resource sharing, a mechanism by which websites can make APIs available to JavaScript running on other domains...
simon willisoncors
https://simonwillison.net/tags/ruby/
Simon Willison on ruby
74 posts tagged ‘ruby’.
simon willisonruby
https://simonwillison.net/guides/agentic-engineering-patterns/using-git-with-coding-agents/
Using Git with coding agents - Agentic Engineering Patterns - Simon Willison's Weblog
Using Git with coding agents - Agentic Engineering Patterns
agentic engineering patternsusing gitcoding agentssimon willisonweblog
https://simonwillison.net/tags/quora/
Simon Willison on quora
1,005 posts tagged ‘quora’.
simon willisonquora
https://simonwillison.net/tags/openai/
Simon Willison on openai
404 posts tagged ‘openai’. OpenAI build ChatGPT and the GPT series of Large Language Models.
simon willisonopenai
https://datasette.simonwillison.net/
Simon Willison's Weblog, in Datasette: simonwillisonblog
simon willisonweblogdatasette
https://simonwillison.net/tags/rust/
Simon Willison on rust
105 posts tagged ‘rust’.
simon willisonrust
https://simonwillison.net/tags/artificial-analysis/
Simon Willison on artificial-analysis
6 posts tagged ‘artificial-analysis’. Artificial Analysis is an independent AI benchmarking and analysis company.
simon willisonartificial analysis
https://simonwillison.net/tags/xai/
Simon Willison on xai
10 posts tagged ‘xai’.
simon willisonxai
https://simonwillison.net/tags/windows/
Simon Willison on windows
39 posts tagged ‘windows’.
simon willisonwindows
https://simonwillison.net/guides/agentic-engineering-patterns/anti-patterns/
Anti-patterns: things to avoid - Agentic Engineering Patterns - Simon Willison's Weblog
Anti-patterns: things to avoid - Agentic Engineering Patterns
anti patternsagentic engineeringsimon willisonthingsavoid
https://simonwillison.net/tags/prompt-injection/
Simon Willison on prompt-injection
147 posts tagged ‘prompt-injection’. Prompt Injection is a security attack against applications built on top of Large Language Models, introduced here and...
simon willisonprompt injection
https://simonwillison.net/tags/slop/
Simon Willison on slop
37 posts tagged ‘slop’. Slop describes AI-generated content that is both unrequested and unreviewed. See Slop is the new name for unwanted AI-generated content.
simon willisonslop
https://simonwillison.net/tags/psf/
Simon Willison on psf
20 posts tagged ‘psf’. The Python Software Foundation is the non-profit organization devoted to advancing open source technology related to the Python...
simon willisonpsf
https://simonwillison.net/tags/datasette/
Simon Willison on datasette
1,471 posts tagged ‘datasette’. Datasette is an open source tool for exploring and publishing data.
simon willisondatasette
https://simonwillison.net/tags/cli/
Simon Willison on cli
109 posts tagged ‘cli’. Command-line interface tools and how to build them.
simon willisoncli
https://simonwillison.net/tags/code-interpreter/
Simon Willison on code-interpreter
30 posts tagged ‘code-interpreter’. ChatGPT Code Interpreter is a mode of ChatGPT (and now Claude) that allows it to write and then execute Python code in a...
simon willisoncode interpreter
https://simonwillison.net/tags/ai-assisted-search/
Simon Willison on ai-assisted-search
34 posts tagged ‘ai-assisted-search’. Using LLMs to build better search engines, and providing search tool access to LLMs.
simon willisonai assistedsearch
https://simonwillison.net/tags/ocr/
Simon Willison on ocr
25 posts tagged ‘ocr’.
simon willisonocr
https://pyfound.blogspot.com/2010/07/frank-willison-memorial-award-recipient.html
Python Software Foundation News: Frank Willison Memorial Award Recipient Selected
python software foundationnews frankmemorial awardwillisonrecipient
https://simonwillison.net/tags/apis/
Simon Willison on apis
98 posts tagged ‘apis’.
simon willisonapis
https://simonwillison.net/tags/programming/
Simon Willison on programming
158 posts tagged ‘programming’.
simon willisonprogramming
https://simonwillison.net/tags/social-engineering/
Simon Willison on social-engineering
3 posts tagged ‘social-engineering’.
simon willisonsocial engineering
https://simonwillison.net/guides/agentic-engineering-patterns/interactive-explanations/
Interactive explanations - Agentic Engineering Patterns - Simon Willison's Weblog
Interactive explanations - Agentic Engineering Patterns
agentic engineering patternssimon willisoninteractiveexplanationsweblog
https://simonwillison.net/tags/python/
Simon Willison on python
1,241 posts tagged ‘python’. The Python programming language.
simon willisonpython
https://simonwillison.net/tags/jules/
Simon Willison on jules
6 posts tagged ‘jules’. Jules is an asynchronous coding agent from Google.
simon willisonjules