@pakrym

codex @ openai

Joined October 2009
  • Tweets593
  • Following104
  • Followers1.2K
61Media
Pavel Krymets 🇺🇦 retweeted
Tibo
@thsottiauxApr 30
Never talk about goblins. Our latest blog is live. openai.com/index/where-the-g…

Where the goblins came from

How goblin outputs spread in AI models: timeline, root cause, and fixes behind personality-driven quirks in GPT-5 behavior.

openai.com
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Pavel Krymets 🇺🇦 retweeted
Tibo
@thsottiauxJan 9
With the Claude Code shutdown. I am proud that we build Codex in the open with our OSS repo and we are 100% invested in supporting a flourishing ecosystem of agentic coding tools out there. You can already build on top of github.com/openai/codex/tree… directly, which includes ChatGPT login and same usage as you get in codex. Reach out if you are a builder!
Thariq
@trq212Jan 9
Yesterday we tightened our safeguards against spoofing the Claude Code harness after accounts were banned for triggering abuse filters from third-party harnesses using Claude subscriptions.
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After years of working on SDKs this is the one I'm most excited about. Check it out and let me know what you think!
Greg Brockman
@gdb6 Oct 2025
Codex is now generally available, with a new SDK, enterprise features, etc.. Live demo of vibe coding of a controller for the stage lights (including voice interface!).
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Pavel Krymets 🇺🇦 retweeted
OpenAI
@OpenAI15 Sep 2025
We’re releasing GPT-5-Codex — a version of GPT-5 further optimized for agentic coding in Codex. Available in the Codex CLI, IDE Extension, web, mobile, and for code reviews in Github. openai.com/index/introducing…

Introducing upgrades to Codex

Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.

openai.com
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There isn’t enough being said about efficient caching when deploying models in production. Structuring your input the right way can lead to 90%+ tokens being cached in agentic flows. Cached input tokens are 10x cheaper than non-cached ones.
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For Responses API: 1. Don't change instructions and tool in between turns 2. Only append items to the input, never change or remove 3. Set prompt_cache_key to a stable value across turns
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Pavel Krymets 🇺🇦 retweeted
Tibo
@thsottiaux17 Aug 2025
Codex CLI now works with your ChatGPT login, with generous GPT-5 use included in the plus and pro plans. $ brew install codex $ codex It's that simple.
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Pavel Krymets 🇺🇦 retweeted
Alexander Embiricos
@embirico7 Aug 2025
📣 We shipped major improvements to the Codex CLI today GPT-5, with usage included in your ChatGPT Plan (no API key needed) Upgraded prompt, harness, approvals & sandboxing logic... you name it Get the latest: 1. `npm install -g @openai/codex` -> v0.16+ 2. `codex login`
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I’m looking for interview opportunities in Canada for my friend who fled Ukraine after the Russian invasion. She has a BS in CS and 2.5y experience in enterprise Java (Spring, SQL, Hibernate, JPA). Any help is much appreciated!
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She's @TokanYulia on Twitter and linkedin.com/in/yulia-tokan-… on LinkedIn
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cc @GirlsWhoCode @womenwhocodeto
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cc @davidfowl @terrajobst @terrajobst
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Pavel Krymets 🇺🇦 retweeted
NEXTA
@nexta_tv16 Mar 2022
Today, speaking before the #US Congress, Zelenskyy showed this video.
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Ukrainian shipping company is collecting humanitarian aid to be sent to Ukraine by plane on friday: instagram.com/p/CafcNZrlh1A/. List of required items is in post description. Please donate what you can.

Meest USA (@meestusa) • Instagram photo

instagram.com
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They ask to cover the discounted shipping cost of 2.30 per lb.
To everyone who asked me what they can do to help: bank.gov.ua/en/news/all/nats…
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A great recent interview with a C# and TypeScript architect Anders Hejlsberg: youtube.com/watch?v=K3qf8gRF…

Talking with a legend – interview with Anders Hejlsberg

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

youtube.com
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Global using and file scoped namespaces are so nice. Removes a ton of boilerplate with very little downside.
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A new version of Jab compile-time Dependency Injection is out! Now with incremental compilation support and other fixes. nuget.org/packages/Jab/0.5.1

Jab 0.5.1

Package Description

nuget.org
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more replies
I didn't think that cross-compiling the source-generator for multiple version Roslyn is something I need to worry about but it becomes a requirement if you want to run on .NET 5 but use new Roslyn features for .NET 6
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Big thanks to @eehardt who figured out cross targeting for .NET built-in generators. Having a working example helped a lot.
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