Brad Lightcap

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

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.

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! openai.com/index/the-next… Really fantastic work by @stevendcoffey and the API team!

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@snsf @iwebst welcome!

I’m super excited to welcome @iwebst, Michael D’Angelo, and the Promptfoo team to OpenAI. As enterprises deploy AI coworkers into real workflows, evaluation, security, and compliance become foundational requirements. Promptfoo has built a great set of tools for automated security testing and red-teaming, security and evaluation built into development workflows, and integrated reporting and traceability to meet growing governance, risk, and compliance expectations. We are excited to integrate these capabilities into Frontier and bring them to our customers. openai.com/index/openai-t…

@BarkNyrk yes

@bradlightcap Is there an excel plugin like the Claude plugin?

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

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.

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!

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.

GPT-5.3-Codex is here. It advances both frontier coding performance and professional knowledge capabilities together in a single model. openai.com/index/introduc…

we're partnering with @bcg @mckinsey @accenture and @capgemini to deploy openai frontier to enterprises globally openai.com/index/frontier…

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 openai.com/index/introduc…

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

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

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 openai.com/index/introduc…

we wrote about our in-house data agent used by ~4k people, from product/eng, to research, GTM, finance, and more it was built with codex, and runs on codex, gpt-5, and our evals & embeddings APIs like codex, it works like a teammate you can collab with openai.com/index/inside-o…

Recapping OpenAI’s week in health: 🔹 >230M people use ChatGPT to navigate health each week, across billions of messages 🔹 ChatGPT Health: a dedicated space bringing health intelligence together with your health data, with purpose-built privacy protections 🔹 OpenAI for Healthcare: • ChatGPT for Healthcare: HIPAA-compliant ChatGPT, including trusted medical evidence from millions of studies, reusable health templates/workflows, enterprise controls/governance. Already rolling out to leading institutions–Boston Children’s, Memorial Sloan Kettering, Stanford Children’s, Cedars-Sinai, and more • API for Healthcare: already supports HIPAA and powers the healthcare ecosystem 🔹 All built on the foundation of two years of dedicated research • Rigorous evaluation across both benchmarks (HealthBench) and real-world study (AI clinical copilot) • Every model OpenAI ships today is built for the workflows of consumers and health professionals, across every major stage of model training • We’ve worked in partnership with >260 physicians across 60 countries of practice, dozens of specialties 🔹Today: we’ve acquired Torch, an exceptional, mission-aligned team that will accelerate our roadmap OpenAI’s mission is to ensure AGI benefits all of humanity. We put together a plan for health at OpenAI when I joined 1.5 years ago and have been investing heavily in health since then, because we expect improving health to be one of the defining impacts of AGI. Last week, we completed that original plan–I’m so so proud of our team for running through walls for health impact. ♥️ In 2026 we enter the scaling era for the impact of AI on human health (and scaling is something we’re good at). I hope we can “race to the top” here across labs–in fact, other labs investing heavily here (for the benefit of humanity) is one of our 2026 goals. More from us soon! Learn more: ChatGPT Health: openai.com/index/introduc… OpenAI for Healthcare: openai.com/index/openai-f… HealthBench: openai.com/index/healthbe… AI clinical copilot study: openai.com/index/ai-clini…

introducing openai for healthcare it includes chatgpt for healthcare, as well as models optimized for care providers and workflows both our APIs and chatgpt support HIPAA compliance requirements we're partnering with HCA, boston children's hospital, MSK, stanford health and many more openai.com/index/openai-f…