Sebastian Korfmann @skorfmann.com · 23/09/2026not really surprising that it works - what still amazes me is that this was a plain session, no "/goal" or workflow, it just kept going fully unattended, made judgment calls like aligning the sound level, quality improvements, etc. This would have taken me days, and the results would've been worse 000
Sebastian Korfmann @skorfmann.com · 23/09/2026the second session was taking the other half of the videos still raw on a dropbox, analysing, cutting, editing, polishing and uploading to youtube via the browser in roughly 5 hours for 10 videos. 110
Sebastian Korfmann @skorfmann.com · 23/09/2026These were two opus 5.5 session, the first one yesterday evening editing the first stage which was already a draft in youtube (via browser) and analysing via gemini blog.google/innovation-a...blog.googleIntroducing agentic video understanding with GeminiWe’re launching agentic video understanding across our latest Gemini models for improved accuracy and lower costs and token usage. 100
Sebastian Korfmann @skorfmann.com · 23/09/2026Opus 5.5 was busy and published the talks we had for the agentic.hamburg conf we did earlier this year. www.youtube.com/playlist?lis...youtube.comAgentic Conf Hamburg 2026 - YouTubeTalks from Agentic Conf Hamburg 2026: a one-day conference on agentic coding, by practitioners for practitioners. 22 March 2026, SAE Institute Hamburg. Pract... 100
Reposted by Sebastian KorfmannTobias Müller @tobilg.com · 27/08/2026Launching Gespenst 👻 - A browser & headless terminal built on Ghostty's ghostty-vt WASM. Byte-oriented Web Streams API, WebGPU/WebGL2 rendering, and an xterm.js 6.0 compatibility package so you can try it without a rewrite. gespenst.devgespenst.devgespenst — Ghostty VT for the webA high-performance TypeScript terminal with Ghostty VT and portable browser-only shells. 082
Sebastian Korfmann @skorfmann.com · 18/08/2026Is my Bluesky follow feed dying? Yes. isblueskydying.com/skorfmann.com So whom should I follow? Mostly agentic / ai topics or somehow local (Hamburg metropolitan area)isblueskydying.com 112
Sebastian Korfmann @skorfmann.com · 14/08/2026I know - and I’m curious if someone replicated this exact version as closely as possible. I don’t think that all signals are publicly exposed though (e.g. media open) 110
Sebastian Korfmann @skorfmann.com · 14/08/2026So, anyone built an x like for you feed based on what they published? Would be curious how this works on Bluesky www.heise.de/en/news/X-ma...heise.deX makes timeline algorithms open source – and promises transparencyThere has been much speculation about how X decides which posts end up in the algorithmic timelines. Now you can check it yourself. 120
Sebastian Korfmann @skorfmann.com · 06/08/20262026. Ein Terminbuchungsportal erlaubt standardmäßig nur die großen Mailanbieter. Eigene Domain? Ticket aufmachen, warten, bis ein Techniker sie von Hand freischaltet. Kein MX-Check, kein Double-Opt-In. Menschliche Freigabe. 101
Reposted by Sebastian KorfmannHendrik Mans @hmans.dev · 29/07/2026August 25, Hamburg, save the date! #svelte 041
Sebastian Korfmann @skorfmann.com · 29/07/2026The new Sternbrücke is on the move: 108 m long, 4,500 tonnes, rolled through Altona to replace a bridge from 1926. There’s a livestream. #hamburg www.eisenbahnbruecken-ehm.de/sternbruecke... 030
Sebastian Korfmann @skorfmann.com · 28/07/2026this got so annoying that I'm back to codex for coding projects 100
Sebastian Korfmann @skorfmann.com · 12/07/2026So Anthropic keeps „relaunching“ Fable every week now, or what is this about? 140
Reposted by Sebastian KorfmannHendrik Mans @hmans.dev · 08/07/2026Very happy to announce that @chatto.run, the amazing little team chat app you can self-host from your own infrastructure (and quite easily so), is now available & Open Source. ✨hmans.devChatto is now Open Source!The snappiest chat application you've ever used is now available for self-hosting. 1319546
Reposted by Sebastian KorfmannCarlo Zottmann @zottmann.dev · 28/06/2026For testing out a few inference providers for #GLM5.2, I created a new #Pi extension for Euro provider #TensorX. They have a smol selection of models (tensorx.ai/models/), but what they serve, they serve *fast*. 200+ tps, constantly. Nice! github.com/czottmann/pi... #LLMgithub.comGitHub - czottmann/pi-tensorx: TensorX provider extension for pi coding agent. (TensorX is a European LLM router. I'm a customer.)TensorX provider extension for pi coding agent. (TensorX is a European LLM router. I'm a customer.) - czottmann/pi-tensorx 011
Sebastian Korfmann @skorfmann.com · 17/06/20262 hours after announcing all 130 seats are gone 🤯 We need larger venues 😅 010
Sebastian Korfmann @skorfmann.com · 17/06/2026Agentic Coding Meetup #6 - Tue 7 July, 18:00 @ XING Baumwall. Two talks + lightning demos (5 min) + people building with AI for real → luma.com/agentic-ymzlluma.comAgentic Coding Meetup #6 · LumaAgentic Coding Meetup #6 — hosted by XING at their new Baumwall office. Hamburg's meetup for people who build with AI, not just talk about it. Practitioners… 200
Sebastian Korfmann @skorfmann.com · 13/06/2026www.anthropic.com/news/fable-m...anthropic.comStatement on the US government directive to suspend access to Fable 5 and Mythos 5The US government has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States. 000
Sebastian Korfmann @skorfmann.com · 12/06/2026Die WM läuft – aber wo? ⚽📺 Kleine Web-App für deutsche Fans: alle 104 Spiele in deutscher Zeit, TV-Sender pro Spiel (ARD/ZDF/MagentaTV) inkl. Mediathek-Deep-Links – plus Public-Viewing-Spots in 7 Städten. 👉 jot.skorfmann.com/wm2026/jot.skorfmann.comWM26 · Spielplan & TV-GuideWer spielt heute, wo läuft's im TV (ARD, ZDF, MagentaTV) und wo ist Public Viewing? Alle 104 Spiele in deutscher Zeit. 131
Sebastian Korfmann @skorfmann.com · 10/06/2026A titanic simulation 🚢 #fable5 jot.skorfmann.com/titanic/jot.skorfmann.comRMS Titanic — The Sinking in 3D, April 14–15, 1912 042
Sebastian Korfmann @skorfmann.com · 09/06/2026> Meet Fable 5, our newest model for complex, long-running work. Try anytime with /model. > Included in your plan limits until Jun 22, then switch to usage credits to continue. www.anthropic.com/claude/fable 👀anthropic.comClaude FableNext generation of intelligence for the hardest knowledge work and coding problems. 000
Sebastian Korfmann @skorfmann.com · 05/06/2026Using "dynamic workflows" in claude a bit too intense I guess > API Error: Server is temporarily limiting requests (not your usage limit) · Rate limited 200
Sebastian Korfmann @skorfmann.com · 04/06/2026Built a tiny browser engine for fun 🦀 → 🕸️ It parses, styles, lays out (taffy), scripts (QuickJS) and paints (tiny-skia) HTML/CSS/JS entirely inside WebAssembly. The browser never sees the markup - only pixels come back out. jot.skorfmann.com/prism-render...jot.skorfmann.comPrism — a browser engine inside WebAssemblyAn experimental, for-fun prototype: a from-scratch HTML/CSS/JS rendering engine in Rust + WASM (partial coverage, not yet open source), explained interactively — with live demos of the real renderer. 250
Sebastian Korfmann @skorfmann.com · 04/06/2026and of course, the video itself was also created via ai helmut.rocks/making-of.htmlhelmut.rocksHelmut & die Tausend Euro — Making-ofVon einer Tagesschau-Meldung zum KI-Deutschrap-Musikvideo mit Helmut, dem Yeti-MC. End-to-end aus Claude Code — inkl. Live-DJ-Mixer. 010
Sebastian Korfmann @skorfmann.com · 04/06/2026The compiled wasm for the browser is about 2.5 mb and runs and renders arbitrary JS, CSS (subset) and HTML 120
Sebastian Korfmann @skorfmann.com · 04/06/2026A fun experiment I'm pursuing with Codex, building a simple browser rendering engine within a browser via Rust / WASM - Latest and most sophisticated take so far: play a video file with sound and do all the work in wasm. Codex runs for more than 16 hours already, and it's getting there 130
Sebastian Korfmann @skorfmann.com · 03/06/2026Dynamic Workflows in Claude Code to non coding problems are superb for fanning out 100s of subagents in minutes. 110
Sebastian Korfmann @skorfmann.com · 30/05/2026would certainly make "alles wegschmeissen und neubauen" easier to push through :) 020
Sebastian Korfmann @skorfmann.com · 30/05/2026running codex in multiple subsequent "/goal" loops for the last 24 hours - so far no limit in sight 000
Sebastian Korfmann @skorfmann.com · 26/05/2026half a day of in depth code analysis from various angles of a handful of repositories via Claude Code using an API key is worth a Claude Max subscription 💸 150
Sebastian Korfmann @skorfmann.com · 25/05/2026Pelzerhaken / Brodau - also praktisch gleich ums Eck 000
Sebastian Korfmann @skorfmann.com · 25/05/2026In other news: wir sind jetzt dauercamper an der Lübecker Bucht 😅🏝️ 120
Sebastian Korfmann @skorfmann.com · 21/05/2026And the making of helmut.rocks/making-of.htmlhelmut.rocksHelmut & die Tausend Euro — Making-ofVon einer Tagesschau-Meldung zum KI-Deutschrap-Musikvideo mit Helmut, dem Yeti-MC. End-to-end aus Claude Code — inkl. Live-DJ-Mixer. 000
Sebastian Korfmann @skorfmann.com · 21/05/2026Full youtube www.youtube.com/watch?v=cy2S...youtube.comTausend Euro – HELMUT der YetiYouTube video by Helmut 110
Sebastian Korfmann @skorfmann.com · 21/05/2026Shipped a full music video end-to-end with AI: song from Suno, scenes from Seedance, lip-sync via another model, orchestrated from Claude Code. Wild what a bit of AI plumbing gets you these days. Heres the teaser 230
Sebastian Korfmann @skorfmann.com · 19/05/2026but like almost all the other announcments "avaialble later this year" 100
Sebastian Korfmann @skorfmann.com · 19/05/2026Google's Antigravity in search kind of blows my mind #googleio www.youtube.com/live/wYSncx9...youtube.comGoogle I/O '26 KeynoteYouTube video by Google 100