Mark Lyck

Lead software engineer | |

[@levelsio @levelsio]

🇩🇰 Danish stores respect guys

They made a little corner with sofas and a fresh coffee machine so boyfriends/husbands can chill

+ free WiFi

[Mark Lyck @MarkLyck]

@chrislaupama doesn't seem to work with portless.

[Mark Lyck @MarkLyck]

@ionleu https://t.co/X4T9PwXDZv

[Lucas Crespo 📧 @lucas__crespo]

The touchbar was too early and didn't deserve to die, it deserved an LLM.

Static shortcut buttons were the wrong bet.

Imagine buttons that rewrite themselves based on whatever you're doing, that's the keyboard that feels right for an AI-native Mac.

[Mark Lyck @MarkLyck]

@SynthPotato Rule #1 always do the unexpected

[JohnPhamous @JohnPhamous]

nudge towards doing an action

- disclaimer to convey best practice
- disclaimer emphasized when user tries to go against recommendation
- button label clear the consequence

we saw ~22% save rate after shipping

[Lars Grammel @lgrammel]

Added step performance stats to AI SDK 7 canary:

- step time
- llm response time
- time to first token
- tool execution times
- tokens per second (several variants)

[Mark Lyck @MarkLyck]

@markproduct Where's the first one from?

[@levelsio @levelsio]

My friend's private office / coworking in Lisbon got burglared at night

They took his Apple Studio Display of about $4000, he even made a custom travel case for it which had an Airtag on it, the criminals were smart and packed it in his case and took it

He had an Airtag on it so tracked it, he found it in a warehouse south of Lisbon

He reported it to Portuguese police, and showed where it was with the Airtag, they said they couldn't do anything because it was inside a building and by law they could not enter private property to recover it

If they can't then what is police even for?

[Mark Lyck @MarkLyck]

@Osha_Lion Saved in https://t.co/sn9W0lxi5W

[Elon Musk @elonmusk]

Grok foundation model V9-Medium (1.5T) has finished training. Evals look good. A lot of Cursor data was added in supplementary training and there is more to come.

Fine-tuning is underway and reinforcement learning begins in a few days. 2 to 3 weeks to public release.

This will be a major improvement over the 0.5T v8-small that currently serves all Grok production traffic, especially for difficult coding tasks.

[Mark Lyck @MarkLyck]

@rauchg https://t.co/4ylnOnrVPH

Mostly GPT 5.5

[Mark Lyck @MarkLyck]

@iamdavidhill Hard disagree, I have several projects going on at once, not having a side-bar to manage these and see what sessions are in which project and easily jump between them would be a pain, or having an idea of which order the sessions are in.

[Elon Musk @elonmusk]

Amazing price for performance!

[Mark Lyck @MarkLyck]

@charlieholtz @pierrecomputer @vercel 🎉 thanks for this!

[Mark Lyck @MarkLyck]

@Noyiwrites Use https://t.co/sn9W0lxi5W

[Mark Lyck @MarkLyck]

@steipete https://t.co/X4T9PwXDZv stores the bookmarks locally as well using TanStack db.

Agent API on the roadmap

[Mark Lyck @MarkLyck]

@millennialergy2 Use https://t.co/4ylnOnrVPH instead to organize and search your X bookmarks.

[Mark Lyck @MarkLyck]

@TylerFCloutier Depends on the use-case of course but in my main project bun replaces 3-4 dependencies I would need if I used node.

But of course if your codebase doesn’t use the bun built-in features, then it does not make a difference in # of deps.