Source code here: github.com/bambamramfan... - try the quiz here: bambamramfan.github.io/ai-compass/
Who's Who of AI
Simon Willison
Independent AI researcher, creator of Datasette and LLM
Independent AI researcher, creator of datasette.io and llm.datasette.io, building open source tools for data journalism, writing about a lot of stuff at https://simonwillison.net/
What they're sharing
The AI Compass bambamramfan.github.io
Claude Fable is relentlessly proactive simonwillison.net
I think Anthropic and OpenAI have found product-market fit simonwillison.net
wsj.com
Initial impressions of Claude Fable 5 simonwillison.net
Notes on Pope Leo XIV’s encyclical on AI simonwillison.net
Fable's judgement simonwillison.net
Uber Caps Usage of AI Tools Like Claude Code to Manage Costs simonwillison.net
Gemini 3.5 Flash: more expensive, but Google plan to use it for everything simonwillison.net
What's new in Claude Sonnet 5 simonwillison.net
ai-compass/index.html at main · bambamramfan/ai-compass github.com
Running Python code in a sandbox with MicroPython and WASM simonwillison.net
Articles & links
After two days with Claude Fable 5 the best way I can describe it is "relentlessly proactive" - here's an example where I dropped in a screenshot of a bug and it span up custom CORS Python servers and used pyobjc-framework-Quartz to capture screenshots simonwillison.net/2026/J…
Given the recent burst of activity around enterprise pricing and contracts, I think April 2026 was the month when both OpenAI and Anthropic found product-market fit simonwillison.net/2026/May/27/...
Supposedly Anthropic are set to have their first profitable quarter. WSJ this time: www.wsj.com/tech/ai/mind...
AI Weekly's analysis
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- Anthropic projects $10.9B in Q2 2026 revenue, more than doubling Q1's $4.8B in a single quarter.
- Claude Code surpassed $1B in annualized revenue within six months of its launch, driven by enterprise developers.
- An expected $559M operating profit marks the first quarter Anthropic covers costs without relying solely on outside capital.
Read full analysis →
Wrote up my initial impressions of Claude Fable 5 - it has a big model smell: slow, expensive and capable of crunching through pretty much everything I threw at it simonwillison.net/2026/Jun/9/c...
When I woke up this morning I didn't think I'd be spending a bunch of time today getting familiar with Catholic theology, but here we are. Notes on Pope Leo XIV's encyclical on AI. simonwillison.net/2026/May/25/...
The most interesting Fable tip I've heard so far is to let the model use its own judgement as much as possible I told it "For all coding tasks use your judgement to decide an appropriate lower power model and run that in a subagent" and it seems to be saving tokens simonwillis…
Uber reportedly now caps coding agents at $1,500/month per employee per tool - seems sensible to me, but it's also an interesting hint at the value Uber thinks these tools are providing simonwillison.net/2026/Jun/3/u...
My notes on Gemini 3.5 Flash - 3x the price of Gemini 3 Flash but Google are planning to use it for many of their own products simonwillison.net/2026/May/19/...
Notes (and a Pelican) on Claude Sonnet 5 - the new tokenizer makes it ~1.4x more expensive for English, ~1.33x more expensive for Spanish but roughly the same price for Simplified Mandarin simonwillison.net/2026/Jun/30/...
Source code here: github.com/bambamramfan... - try the quiz here: bambamramfan.github.io/ai-compass/
I may have finally found the Python-in-a-sandbox solution I've been looking for... here's my latest experiment, this time running MicroPython in WebAssembly inside my Python applications simonwillison.net/2026/Jun/6/m...
Their own posts
Recent commentary
Hacker News has an alarmingly high tolerance for slop content these days It also has social norms against accusing something of being written with AI, which means the community has trouble strengthening its immune system against that slop
Their network
In Simon Willison's orbit
Center = Simon Willison. Left = members they follow (green edges). Right = members who follow them (blue edges). Top = mutual follows (orange edges, slightly larger). Drag any node to reposition; click to open that profile.