Mike

Incredibly excited for this new chapter. Callstack turns 10 this year, and I couldn't be more proud of the team, the work we've done, and the direction we're taking next. React Native is still our foundation. AI-native engineering is where we're going next. Let's ship the next 10 years!

@SzymonRybczak That's nice!

took a day off yesterday to hike in the Polish Tatra Mountains! 🇵🇱⛰️

@thymikee @callstackio Some of the drawbacks I see mentioned there I know are fixed already! 😁👀

agent-device scores highest in this little benchmark, nice. there’s still so much we can do, we’ll keep on polishing the experience

@Turbo_Szymon @1804davey Nice animation!

I was a bit bored on vacation, so I decided to build a new personal website. Most of the content is AI-generated based on my Twitter, LinkedIn, and GitHub, but I’d love to hear what you think 🙏 especially about the animations. 😊 kapala.dev

@dabit3 @Naseem9brev @cognition We should do one in Warsaw!

@grabbou @Naseem9brev @cognition 🔥🔥🔥

Just came back from Devin’s first UAE meetup by @Naseem9brev / @cognition. Thanks for organizing - was fun!

@Naseem9brev @cognition Hell yea

@grabbou @cognition Thank you for coming brother, looking forward to codex next week 👀👀

Yet another great use of React Native Harness. If you're building native modules, this is your library to make sure everything is 🟢 on the CI!

@reach_vb Great stuff! Tuning in on Tuesday from Dubai! luma.com/boqix2zk

Excited to announce OpenAI Build Week! A week full of excitement, joy and dedication to pushing what's possible with GPT 5.6 and Codex We're introducing a Global challenge starting July 13 and over 40+ events across the globe to bring this experience closer to you Kudos to our Codex Ambassadors for putting together such tremendous experiences across the planet from SF to Tokyo in the coming week!! Sign up now and excited to see what you build!

@thymikee @norbertbodziony @agent_device Chętnie się spotkamy! 💪

@norbertbodziony Budujemy fajne rzeczy po AI engineering w Callstack: - Apex: własny model wyspecjalizowany w React Narive fine-tunowany na Gemma 4 - @agent_device - CLI dla agentów do kontroli urządzeń mobilnych callstack.com/blog/introduci…

Who in Poland is actually building with AI? Not just talking about it. Building products, agents, automations, workflows, internal tools. If that’s you, comment here or DM me. Let’s talk.

If you’re in Dubai, don’t miss out next week to experience latest OpenAI models with us! 💯

@sama Hosting Codex meetup next Tuesday, there couldn’t be better timing! luma.com/boqix2zk

GPT-5.6 sol launches thursday! happy building

Today. 10am PT.

OpenAI audited SWE-Bench Pro and found ~30% of tasks broken. Worth reading. We know our own benchmark isn't perfect either. It's a rough signal for comparing models against each other, not an absolute measure. Will be improving it in the coming weeks based on findings like these 🫡

@janicduplessis @lukasz_app Thanks for joining us

I had a great time talking with @lukasz_app about React Native Ease. If you're interested to learn a bit more about the history of animation libraries in react-native and also the motivation behind Ease you should go check it out!

@o_kwasniewski @TesterArmy now time to migrate to @agent_device and you're 🐐

Just migrated one of the core experiences in @TesterArmy to eve.dev The migration from AI SDK ToolLoopAgent was pretty smooth

@thymikee @agent_device wasn't the case before? 😅

started publishing highlights for @agent_device releases, should be easier to get the idea of what shipped

Looking for experienced engineers at intersection of Go and SAP. Anyone? 👋 [DMs are open]

"AI outpaces code review" is not news. The mechanics of fixing it are: what runs between a diff and a merge decision, and when agent evidence is trustworthy enough to merge on. @thymikee and @xeonbloomfield, free walkthrough, July 21, 5PM CEST 🍿 callstack.com/events/behavio…

Give an agent a prompt, and you feed them for a day. Teach an agent to prompt, and you feed them until the next @bcherny or @steipete post. I gave Codex a goal, agent-device for verification, and now it debugs itself from video frames until it's done.