Yumin

Building cool stuff. Easily distracted by things I could build next.

[Yumin @yzyydev]

Identity alone doesn't authorize anything though. In Entra an agent's permissions still need admin consent. That's the layer to watch next 🚀

[Yumin @yzyydev]

Google just gave every Gemini agent its own identity, email and audit trail 🔥 Microsoft has been building the same thing with Entra Agent ID. Quick comparison.

[Yumin @yzyydev]

Every agent also needs a human sponsor. If that person leaves the company, their manager becomes the sponsor automatically. So there's always someone accountable.

[Yumin @yzyydev]

@borvibe Same here! Can't wait to see you again!

[Yumin @yzyydev]

This is what Codex energy looks like 🔥 Met @borvibe in SF.. The ambassador crew is built different.

[Boris @borvibe]

I was just done with security when I heard: “Boris, right?”

@yzyydev recognized me from my Codex shenanigans , and he invited me to the business lounge! 😎

This was not a one-off incident, just the latest in a streak of generosity.

Some notible mentions:

- came to see @MbyM ‘s awesome presentation at @Stripe . He overheard me and a friend discuss a situation and then helped out BIG TIME. He did not know me, and I didn’t even have to ask!

- All @OpenAIDevs ambassadors that were there. Everybody was in sharing mode: snacks, ideas, making plans together, hyping each other up 🤩
I miss y’all already 🫶

- Last but not least :
@paw_lean & @rhiannon_io &
@OpenAI : What a GOATED program you put together for us. Dinners, boat trips, sessions in the office, best of all @paw_lean giving us MULTIPLE shoutouts for our efforts on stage at DevDay!

this is not even all but the tweet is getting long AF😅I’m beyond grateful.
THANK YOU EVERYONE 🫶

Will be back soon in this city is full of positive sum energy.

But first, bringing it all home to Paris. Can’t wait to explore all these launches together with the community. Big announcement coming… SEE YOU SOON MES AMIS ! 🇺🇸🔜🇫🇷✨

[Boris @borvibe]

I was just done with security when I heard: “Boris, right?”

@yzyydev recognized me from my Codex shenanigans , and he invited me to the business lounge! 😎

This was not a one-off incident, just the latest in a streak of generosity.

Some notible mentions:

- came to see @MbyM ‘s awesome presentation at @Stripe . He overheard me and a friend discuss a situation and then helped out BIG TIME. He did not know me, and I didn’t even have to ask!

- All @OpenAIDevs ambassadors that were there. Everybody was in sharing mode: snacks, ideas, making plans together, hyping each other up 🤩
I miss y’all already 🫶

- Last but not least :
@paw_lean & @rhiannon_io &
@OpenAI : What a GOATED program you put together for us. Dinners, boat trips, sessions in the office, best of all @paw_lean giving us MULTIPLE shoutouts for our efforts on stage at DevDay!

this is not even all but the tweet is getting long AF😅I’m beyond grateful.
THANK YOU EVERYONE 🫶

Will be back soon in this city is full of positive sum energy.

But first, bringing it all home to Paris. Can’t wait to explore all these launches together with the community. Big announcement coming… SEE YOU SOON MES AMIS ! 🇺🇸🔜🇫🇷✨

[Yumin @yzyydev]

@borvibe @MbyM @OpenAIDevs The energy here is unreal 🔥 Codex ambassadors really are on another level. So great meeting you in SF!

[Yumin @yzyydev]

@akothari would love to try it!

[Brad Groux @BradGroux]

Ran into @yzyydev checking into DevDay!

[David Marquez @dayvough]

Just met @ryoppippi here! Founder of ccusage. IYKYK!

What a small world! #DevDay @brianchew @yzyydev

[Yumin @yzyydev]

@ChrisUniverse @CueAgents would appreciate it

[Yumin @yzyydev]

@altryne would love to join!

[Yumin @yzyydev]

Off to SF for my first DevDay.

Let's see how many ships OpenAI can fit into one week 🚢🚢

[Yumin @yzyydev]

@injaneity @paw_lean @OpenAIDevs i’ll be there too, also my first time in sf. What is the item on your bucket list?

[Joshua To @joshto]

Say hello to Muse Charm!

[Muse @Muse]

charmed to meet you!

[Yumin @yzyydev]

I am absolutely thrilled and cannot wait to dive in and test this out! Let's go 🔥🚀

[Meta VR @MetaVR_Official]

Meta VR Glasses
Coming Spring 2027.

[Yumin @yzyydev]

@gracepace_ @OpenAI @sama Flying in from Germany this weekend, first time in SF too, so the group chat might need to adopt me

[Yumin @yzyydev]

I asked Opus 5.5 to imagine a day in its own life and turn it into a video.

The last scene got me. "I won't remember them tomorrow... but they were lovely."

All of it drawn and scored in code. Stunning.

[ClaudeDevs @ClaudeDevs]

Opus 5.5 performs at the level of Fable 5.1. It's ~30% faster and ~40% cheaper than Opus 5 per task.

In Claude Code:
- 5-hour session limits increase 20% today
- Opus 5.5 is priced lower, so it goes 25% further within limits
- Pro, Max, and Team users get a reset to use anytime