Pavel Krymets 🇺🇦

codex @ openai

[Pavel Krymets 🇺🇦 @pakrym]

@andalyn_jared @jasperdevs can you /feedback that thread and DM me the ID?

[Pavel Krymets 🇺🇦 @pakrym]

@patlipinskii @jasperdevs Hi! Pavel from Codex here! Can you run `/feedback` on that session and share the id?

[Pavel Krymets 🇺🇦 @pakrym]

@MartinShkreli Can you run /feedback and share the session id (in DMs) please?

[Pavel Krymets 🇺🇦 @pakrym]

@mureytasroc @willccbb too real

[Tibo @thsottiaux]

Never talk about goblins. Our latest blog is live.

https://t.co/r39VCx7TYZ

[Pavel Krymets 🇺🇦 @pakrym]

@davidfowl Soon!

[Pavel Krymets 🇺🇦 @pakrym]

@embirico I’m thinking a freshly baked sourdough

[Tibo @thsottiaux]

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 https://t.co/hDjdmjH8pg directly, which includes ChatGPT login and same usage as you get in codex. Reach out if you are a builder!

[Pavel Krymets 🇺🇦 @pakrym]

@davidfowl Let me know what you think!

[Pavel Krymets 🇺🇦 @pakrym]

@davidfowl @sama It does

[Pavel Krymets 🇺🇦 @pakrym]

@davidfowl Codex knows powershell ;)

[Pavel Krymets 🇺🇦 @pakrym]

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 @gdb]

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!).

[OpenAI @OpenAI]

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. https://t.co/OVGrUovgHN

[Pavel Krymets 🇺🇦 @pakrym]

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

[Pavel Krymets 🇺🇦 @pakrym]

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.

[Tibo @thsottiaux]

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.

[Alexander Embiricos @embirico]

📣 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`

[Pavel Krymets 🇺🇦 @pakrym]

@ne_skazu s/test/code/

[Pavel Krymets 🇺🇦 @pakrym]

@terrajobst Yes, please!