Bucur David

Software Engineer at @fastxyz

[dax @thdxr]

you can spend so much time just tinkering and playing with things now. every idea i ever had for a fun little game or concept i can just do

i can't think of a better form of entertainment

[Fast @fastxyz]

agentic commerce with real merchants 🛒

live & battle-tested by our team.

try it yourself @ Fast Shop

[Guillermo Rauch @rauchg]

You know what to do 🗽

[Fast @fastxyz]

We built an AI shopping agent that lets you buy anything on Amazon through a conversation.

It's live right now.
Go try it → https://t.co/5sSGuwmvUI

[Guillermo Rauch @rauchg]

Ship the best product. Use lots of AI, some AI, maybe no AI. Just be the best.

[Chris Wood @CWood_sdf]

i love how people are saying "if we write a sufficiently detailed specification, the agent can write all our code"

do you know what writing a sufficiently detailed specification that deterministically maps to what a computer's actions is? it's coding

[Alex Albert @alexalbert__]

With the help of Claude Mythos Preview, the Firefox team fixed more security bugs in April than in the past 15 months combined.

[Claude @claudeai]

We’ve agreed to a partnership with @SpaceX that will substantially increase our compute capacity.

This, along with our other recent compute deals, means that we’ve been able to increase our usage limits for Claude Code and the Claude API.

[Kamil Ruczynski @unable0_]

san francisco in one picture

[Sam Altman @sama]

we are gonna do something nice for everyone who applied for the GPT-5.5 party and that we didn't have space for. hope you enjoy!

[Jake @JustJake]

Very wrong, very dangerous

You want your APIs to do the exact same thing, every time

AI is great at many things; reproducibility is not one of them

[Cormac @cormachayden_]

software engineers before vs after agents

[Mohammed Makulas @makulas1913]

تايب سكربت تتخلى رسمياً عن جافاسكربت. الإصدار القادم (7.0) تمت إعادة كتابته بالكامل بلغة Go، وسرعة الـ Compile تضاعفت 10 مرات.

لسنوات، كان الـ Compiler الأساسي (tsc) مكتوب بـ TS نفسها ويشتغل على بيئة Node.js.
هذا كان قرار استراتيجي ممتاز في البداية عشان يقنعون المطورين يتبنون اللغة، بس هندسياً؟ كان كابوس للمشاريع الضخمة.
الـ JavaScript بطبيعتها Single-threaded، ومقيدة جداً في عمليات الـ CPU المكثفة.

في المشاريع الضخمة، لما الـ Codebase يتجاوز مليون سطر، الـ Build time يصير كارثة. المطور يغير سطر كود في واجهة معينة ويروح يسوي قهوة لين الـ Type checking يخلص.

الانتقال للغة Go (Native port) نسف هذي المشكلة تماماً.
اللعبة هنا في الـ Multi-threading.
مترجم اللغة صار يستغل كل الـ CPU Cores في جهازك دفعة واحدة (عبر الـ Goroutines).
كودك الكبير يتقطع ويتم تحليله بالتوازي.
الـ Overhead حق محرك V8 اختفى من المعادلة.

التأثير مو بس في راحة المطور. في بيئة الـ Enterprise، هذا يعني أن الـ CI/CD Pipelines في السيرفرات بتخلص أسرع بكثير. فاتورة الكلاود لعمليات الـ Build رح تنزل بشكل ملحوظ للشركات.

[Bucur David @IsBucurDavid]

@steipete @HydratedViper_ Curious how much upfront work went into the spec/plan ? and whether the final output actually matched the target or drifted over 26h

[Evanss6 @Evan_ss6]

We are actually so early

[Digi @digiii]

until death, all defeat is psychological

[nic @nicdunz]

/goal in codex is literally agi

[Tibo @thsottiaux]

Don't just reset Codex rate limits for fun, it costs money.
Don't just reset Codex rate limits for fun, it costs money.

... but the vibes are good ...

I have reset Codex rate limits for ALL paid plans to celebrate a good week and allow everyone to build more with GPT-5.5. Enjoy

[Sam Altman @sama]

big upgrade for codex today!

try it for non-coding computer work.

[Bryan Johnson @bryan_johnson]

go to bed
right now
i know the build is almost finished
the eval can wait til morning
the agent will still be failing tomorrow
you won't figure out why it's hallucinating
yes your coworker ships on 4 hrs of sleep
they also hallucinate a lot
off you go