Armin Ronacher

Creator of Flask • earendil.com ♥︎ writing and giving talks • Excited about AI • Husband and father of three • Inhabits Vienna; Liberal Spirit • “more nuanced in person” • More AI content on https://x.com/mitsuhiko More stuff: https://ronacher.eu/

Articles & links

When I struggle to structure my thoughts about what's happening I turn to writing. Today about the recent US Anthropic ban news, what it says about power and dependency, and what it should mean for Europeans and citizens of the world. It's a long one. lucumr.pocoo.org/2026/6/1…

Dangerous Technology For Americans Only lucumr.pocoo.org
AI Weekly's analysis
  • Anthropic suspended Fable and Mythos access for foreign nationals, including its own foreign-national employees.
  • Ronacher argues the shift moved from barring hostile governments to using nationality itself as the access boundary.
  • Europe's structural dependency on US cloud, platforms, and AI feeds a talent drain Ronacher calls a self-reinforcing death spiral.
Read full analysis →
View on Bluesky · ♥ 117 ↻ 29 ↩ 10 · 5 from the directory shared this · 25d ago

Has been a while since I wrote about agentic engineering, so this time around some learnings of maintaining Pi as a junior maintainer to @mariozechner.at lucumr.pocoo.org/2026/5/24/pi...

Building Pi With Pi lucumr.pocoo.org
View on Bluesky · ♥ 127 ↻ 17 ↩ 3 · 4 from the directory shared this · 45d ago

I had some vibes that Opus 4.8 was performing worse than older ones for some of uses that are off distribution and now I have the receipts. Latest Opus/Sonnet are causing tool invocation failures on Pi's edit tool when older ones did not! I wrote about it. lucumr.pocoo.org/202…

Better Models: Worse Tools lucumr.pocoo.org
View on Bluesky · ♥ 134 ↻ 9 ↩ 8 · 4d ago

In Armin Ronacher's orbit

Center = Armin Ronacher. 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.