Brad Lightcap

@OpenAI

[Brad Lightcap @bradlightcap]

i shared the message below with the openai team this morning. these decisions are never easy, but the talent and mission orientation of the openai team make me more optimistic than ever. 🤍

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Team, it is bittersweet to share that I’ll be moving on from OpenAI to start something new. I feel incredibly fortunate to have spent most of the last decade pursuing our mission and building this company. Sitting here today, mission success feels within sight. It has been the honor of my life to help bring us to this point, and to do it alongside all of you.

I joined OpenAI in 2018, eight years ago this month, because I wanted to work on something hard. @sama introduced me to @gdb and @ilyasut, who showed me a pitch deck suggesting that because models improve predictably with scale, AGI was not only possible but likely. If you had told me then that we’d be where we are today, I wouldn't have believed you.

In the years that followed, I had the privilege of building the first versions of most of our operations and business teams – from Finance to Legal, People, CorpSec, GTM/Gov, Partnerships, and more. Among the most rewarding parts of this journey for me has been watching each of these teams mature under brilliant leaders. I am excited for the next decade in the hands of this incredibly capable team.

At the same time, we grew from a small research lab to one of the most consequential companies of our time. I was reminded of that fact constantly – from serving our first user to our billionth, to the growing scale and ambition of our partnerships and the occasional curveball (the Blip, etc.).

Through it all, I’m proud of how we’ve maintained our focus on people. It always amazes me how quickly the world has adopted our tools and rallied behind our mission. I hope we will continue to earn their trust.

Over the last few months, I’ve been focused on the next horizon and what would stand in the way of mission success. I believe there are a few important new things the world will need to get right as we enter this next period. I’ll have more to share soon, but I believe in OpenAI more than ever and am excited to help you all advance the mission from a different vantage point.

I am deeply grateful to have had the opportunity to work with all of you, and to so many of you for the support through the years. The old OpenAI meme that “the real AGI is the friends you made along the way” really rings true for me.

I will be around for the next few weeks. I am not going far and hope to continue to support you all however I can. I’ll always be a phone call away if you need me.

Brad

[Brad Lightcap @bradlightcap]

with love from prototown, tx 🫶🇺🇸

[Oklo @oklo]

WE HAVE CRITICALITY!

Oklo has completed first criticality at its Groves Isotope Test Reactor.

Built in less than a year under the @ENERGY’s Reactor Pilot Program, Groves offers a concrete blueprint for future advanced nuclear deployment as the fastest fully privately financed and built reactor project of its kind.

Today, Oklo proves that advanced reactors can be built, started, and operated faster than anyone thought possible and shows the world that America can build nuclear again.

https://t.co/7pPFBtljLJ

[Sam Altman @sama]

OpenAI Robotics is hiring, looking for exceptional full-stack hardware, ops, systems, and ML engineers to help us program and manufacture robots that are useful for society.

AI should be able to help people in the physical world. In the short term, we are focused on robots to support skilled workers to build our future infrastructure; in the long term, we imagine everyone having a personal robot doing anything they need.

Our world simulation research program, led by Aditya Ramesh (@model_mechanic), has evolved over the past year into OpenAI Robotics. Progress is rapid, and based on a foundation of co-design between robotics hardware and ML research.

If you love working hands-on across the robotics stack and want to build the future, please consider joining us. Send an email with your background and evidence of exceptional accomplishment to: [email protected]

[Brad Lightcap @bradlightcap]

the OpenAI Deployment Company is a new company built to help businesses deploy frontier AI into the most critical work they do every day

[OpenAI @OpenAI]

Today we’re launching the OpenAI Deployment Company to help businesses build and deploy AI.

It's majority-owned and controlled by OpenAI. It brings together 19 leading investment firms, consultancies, and system integrators to help organizations deploy frontier AI to production for business impact. https://t.co/GnyjGFaLLA

[OpenAI @OpenAI]

Introducing GPT-5.5

A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done.

Now available in ChatGPT and Codex.

[Srinivas Narayanan @snsf]

Today we launched a major update to the OpenAI Agents SDK to help developers build and deploy long-running, durable agents in production.

You can now build your own Codex-style agents using powerful primitives for modern agents - file and computer use, skills, memory and compaction.

The harness and compute are now split - you can bring your own sandbox or use partners like Blaxel, Cloudflare, Daytona, E2B, Modal, Runloop, and Vercel for container execution.

The harness is open-source and so you can inspect and customize it for your needs.

Try it out!
https://t.co/MXPwV83mAl

Really fantastic work by @stevendcoffey and the API team!

[Brad Lightcap @bradlightcap]

💡

[Rohan Varma @TheRohanVarma]

If you want AI Code Review, but don't want to pay $25 per review (not a typo), check out Codex Review!

It leverages frontier Codex models, finds complex issues, and 100% usage based. Most runs should cost ~$1 or less

https://t.co/43iF6rq8Xa

[Brad Lightcap @bradlightcap]

@snsf @iwebst welcome!

[Brad Lightcap @bradlightcap]

@BarkNyrk yes

[Brad Lightcap @bradlightcap]

ryan and team worked extremely hard to make gpt-5.4 great for finance

it's much improved for financial modeling and analysis, integrates directly into excel, and connects to factiva, daloopa, s&p global, and many more

it does feel like a codex moment is coming here

[Ryan Brewer @ryanbrewer]

Excited to share that I’ve joined OpenAI to help build the future of financial intelligence.

My focus is connecting models directly to the data sources, tools, and workflows analysts use every day. My team’s first product is the Excel plugin.

After software engineering, finance will see the benefits of model improvements more acutely than almost any other field.

This is just the start for us! More to come soon!

[Noam Brown @polynoamial]

GPT-5.4 is a big step up in computer use and economically valuable tasks (e.g., GDPval). We see no wall, and expect AI capabilities to continue to increase dramatically this year.

[Brendan (can/do) @BrendanFoody]

GPT 5.4 is the best model we’ve ever tested on APEX-Agents. It’s also the first model to pass 50% mean score.

A year ago, frontier models couldn’t even edit an Excel sheet and scored less than 5%. Now, in less than 3 months GPT 5.4 has improved by 15.7%.

ChatGPT will imminently be better than the best consulting firm, better than the best investment bank, and better than the best law firm.

Congrats @OpenAI on the release!

[Sam Altman @sama]

Tonight, we reached an agreement with the Department of War to deploy our models in their classified network.

In all of our interactions, the DoW displayed a deep respect for safety and a desire to partner to achieve the best possible outcome.

AI safety and wide distribution of benefits are the core of our mission. Two of our most important safety principles are prohibitions on domestic mass surveillance and human responsibility for the use of force, including for autonomous weapon systems. The DoW agrees with these principles, reflects them in law and policy, and we put them into our agreement.

We also will build technical safeguards to ensure our models behave as they should, which the DoW also wanted. We will deploy FDEs to help with our models and to ensure their safety, we will deploy on cloud networks only.

We are asking the DoW to offer these same terms to all AI companies, which in our opinion we think everyone should be willing to accept. We have expressed our strong desire to see things de-escalate away from legal and governmental actions and towards reasonable agreements.

We remain committed to serve all of humanity as best we can. The world is a complicated, messy, and sometimes dangerous place.

[OpenAI Developers @OpenAIDevs]

GPT-5.3-Codex is here.

It advances both frontier coding performance and professional knowledge capabilities together in a single model.

https://t.co/mAyt3snLY9

[Brad Lightcap @bradlightcap]

we're partnering with @bcg @mckinsey @accenture and @capgemini to deploy openai frontier to enterprises globally
https://t.co/5dKA0LViti

[Alexander Embiricos @embirico]

GPT-5.3-Codex is out!
State of the art of SWEBench Pro and TBench, and a big leap in how it _feels_:
- Mid-turn updates tell you what it's doing
- Steer without interrupting
- 25% faster via inference improvements
I've been loving it. Think you will too
https://t.co/FWDK04KF3s

[Brad Lightcap @bradlightcap]

for this to work, it's not just about buying software

a new lane of investment is required to equip AI systems to be as successful as your people - in environments, context, onboarding, feedback, management, security, and more

frontier is as much a program as a product, meant to explore this new *frontier* of what companies will look like in the future

[Brad Lightcap @bradlightcap]

introducing openai frontier

a new platform for enterprises to design and run powerful agent systems for real work

companies like @HP @Intuit @Oracle @StateFarm @thermofisher and @Uber are among the first we'll work with to make agents true AI coworkers
https://t.co/jF1yu7Z28P

[Brad Lightcap @bradlightcap]

and yet, very few enterprises have felt this acceleration in their business in tangible ways

we hear often how at odds this reality is with the claims made in endless "enterprise AI" pitches and posturing

it's clear enterprise leaders are tired of talk and expect results