Kræn Hansen 🇩🇰
@kraenhansen.dk
Software craftsman, interested in local-first software, databases, sync engines and (react) native. Father of three 👭🏼👶 from Denmark 🇩🇰 Building Developer Experiences @elevenlabs.io Accepts sponsorships 🐙 https://github.com/sponsors/kraenhansen
thanks @jakelazaroff.com I can finally understand what 90% of bluesky tech discourse is about now @localfirstconf.com
Voice agents are more than speech in, speech out. Luke Farrell has recently talked to @kraenhansen.dk about perceived latency, turn-taking, interruption handling, and the tradeoff between speed and expressiveness. Watch their conversation ⬇️ clstk.com/4v3o7iK
How Voice Agents Handle Latency, Turn-Taking, and Safety With Kræn Hansen
Kræn Hansen (ElevenLabs) talks voice-agent UX, from turn-taking and safety to layered SDK design for React and React Native.
clstk.com
Voice Changer transforms any speech into a different voice while preserving the original timing, emotion, and delivery. Send an audio file to our API and get back the same performance in a new voice, ready for character work, localization, or fixing lines in post.
We built a Lie Detector AI Agent. It listens to conversations and interrupts when it detects a lie: - A loud buzz - An angry pirate calls it out in real time Built with ElevenLabs Agents. youtu.be/SMp1M1LmYwE
We built a Fact Checker Agent
YouTube video by ElevenLabs Developers
youtu.be
Introducing ElevenLabs Devs, a new YouTube channel for AI engineers. Expect deep dives, demos, and clear explanations of key concepts across Text to Speech, Speech to Text, ElevenAgents, and broader AI systems. Subscribe: www.youtube.com/@elevenlabsd...
ElevenLabs Skills have crossed 11k downloads. Once installed, you can use them to build apps with ElevenAgents, Speech to Text, Text to Speech, music, and sound effects. Install them with: > npx skills add elevenlabs/skills
When I joined @elevenlabs.io three months ago, I didn't expect the autonomy and mandate for change to ship a major version bump in a package with 300K weekly downloads 🤯 I'm really proud of this release!
Introducing ElevenAgents React SDK v1.0 A re-architecture of the JavaScript and React SDK to include granular hooks, a unified API across web and React Native, and a stable public API. These changes improve both the developer experience and performance for your end users.
Thank you @steefjan.bsky.social for this nice write-up of my keynote at QCon London this week: www.infoq.com/news/2026/03... My slides are now up as well: speakerdeck.com/ept/mitigati...
QCon London 2026: Kleppmann on Mitigating Europe's Cloud Dependency with Local-First Software
Europe is completely dependent on US cloud services, Martin Kleppmann told QCon London. His fix: commoditise everything. He walked through three technologies he's helped build: multi-cloud via de fact...
infoq.com
I've always enjoyed pair programming as a way to spend time with my colleagues and collaborators, while building something useful. As assisted software engineering is moving up the chain of abstraction, I'm wondering if "Pair Planning" is going to be a thing?
11k people are using the ElevenLabs MCP server in Claude. It connects to your ElevenLabs account and lets you generate speech, sound effects, and music directly in Claude. All the friction of generating audio with ElevenLabs is gone.
I had this neat little idea for a great open source contribution 💙
If your data and language model live on the device, why should the app need a network round trip to interact with them? @psyche.social & @kraenhansen.dk talk about: 🔹 local-first software 🔹 mobile security practices like certificate pinning 🔹 voice AI and real engineering stories Listen now 🎧
I'm wondering if we shouldn't start formalizing a move of the review process "up the chain"? Reviewing code is largely decoupled from the plan which generated it and incorporating architectural feedback on a PR largely generated feels more like passing messages between prisoners 😬
I've been used to relaxing while coding ... And the excitement of hitting a flow state of mind, was what got me addicted to all of this. I'm unsure if I'll ever get to experience either again.
Just watched @martin.kleppmann.com make a great case for adding #technological #sovereignty to the list of values and benefits of #localfirst #software! I think many #europeans in the space knows this and its really nice to see it put into words in such a clear way 💙🙏 www.youtube.com/live/e3bsA2A...
LoFi/34 (Local-First) Meetup -- Tuesday 8AM PST Feb 24, 2026
YouTube video by Local First (LoFi.so)
youtube.com
Now live 🔊 React Universe On Air. Local-first software, voice agents, and real security stories with @kraenhansen.dk. Watch the full episode👇 clstk.com/40ghA7m
Tune in to the latest episode of React Universe on Air where @psyche.social and I have a jolly conversation about a mixed bag of topics dear to my heart 💙 #local-first, #ai powered toys for my kids, #hacking my bank, #stoicism and #parenting to name a few 😂
Some of the best tech stories start at home. Local-first software, security trade-offs, and thoughtful AI discussed through real experience. New React Universe On Air episode with @psyche.social and Kræn Hansen coming soon. YouTube premiere link below👇
React Native 0.84 is now available! This release makes Hermes V1 the default JavaScript engine and ships precompiled iOS binaries by default — bringing significant performance improvements and faster build times to all React Native apps. reactnative.dev/blog/2026/0...
React Native 0.84 - Hermes V1 by Default · React Native
Today we're excited to release React Native 0.84!
reactnative.dev
I've put up a few thoughts on ways to improve the DX of linking #Node-API addons into #Xcode projects: github.com/callstackinc... Please give it a read and comment if you have thoughts or alternative ideas 💙
Improve DX of linking prebuilds · callstackincubator react-native-node-api · Discussion #262
Problem Loading addons via relative paths on Node.js Early on, we had a goal of supporting packages on NPM with existing Node-API addons. Many existing packages use simple names for their library t...
github.com
@elevenlabs.io just announced raising $500M at an $11B valuation to transform how people interact with technology 🎉 Valuation doubling since I signed my contract ... coincidence? I think not 🤔 This place has so much talent and so much potential and I'm really happy to be a part of the journey!
@kraenhansen.dk doing #rust @reactnative.dev talk for @rust-cph.mastodon.social.ap.brid.gy meetup at veo.co
@joodaloop.com I love how you share ideas on the "workbench" section of your website 💙 I think I might have to copy that idea for my own website 🙂
Very relatable! The maintainer of the #Hermes engine is looking forward to Node-API support landing: A major milestone on the journey of adding Node-API to #ReactNative 💙 Lots of kudos and energy goes out to the team at @microsoft.com and Vladimir Morozov in particular! github.com/facebook/her...
Today was my first day on the Developer Experience team at @elevenlabs.io - A marked leader in AI voice cloning for text-to-speech, dubbing and voice AI agents.
Hello #Local-First enthusiat, We have great news to share with you! @fosdem.org '26 wil be hosting a full devroom dedicated entirely to local first software. We have gathered the best lineup ever, all the major open source projects will be presenting! Come and join us, it is free! openlocalfirst.org
Open Local First
For the first time this year, the FOSDEM conference will host a devroom for Local First, CRDTs and sync protocols and sync engines. FOSDEM is the biggest Free and Open Source conference in Europe. Thi...
openlocalfirst.org
Hello #Local-First enthusiat, We have great news to share with you! @fosdem.org'26 will be hosting a full devroom dedicated entirely to local first software. We have gathered the best lineup ever, all the major open source projects will be presenting! Come and join us, it is free! openlocalfirst.org
Open Local First
For the first time this year, the FOSDEM conference will host a devroom for Local First, CRDTs and sync protocols and sync engines. FOSDEM is the biggest Free and Open Source conference in Europe. Thi...
openlocalfirst.org