OpenAI

As our models grow more capable in cybersecurity, we’re taking a deliberate, long-term approach to safety and preparedness. We’re strengthening safeguards and working closely with global experts as we prepare for upcoming models to reach ‘High’ capability under our Preparedness Framework. Cybersecurity is inherently dual-use, so we design for defenders first. We’re investing in layered protections—from training and access controls to monitoring, detection, and enforcement. At the same time, we’re expanding ecosystem efforts like trusted access programs, Aardvark, expert advisory councils, and sharing threat modeling with other frontier labs. These partnerships ensure safeguards reflect real-world needs and that insights move quickly across the security community. We see this work as a sustained, long-term investment in giving defenders an advantage and continually strengthening the security posture of the critical infrastructure across the broader ecosystem. https://lnkd.in/gSF-7s7k

We’ve seen 8× growth in ChatGPT Enterprise messages since November 2024 🚀 ChatGPT now serves 800M+ users weekly, and that momentum is carrying into the enterprise. The primary constraints for organizations are no longer model performance or tooling, but rather organizational readiness. Today, we’re sharing The State of Enterprise AI—a new report on how organizations are actually adopting AI, where they’re seeing value, and what separates early leaders from the pack. A few signals from the data: • Enterprise usage is starting to focus on more sophisticated tasks • Users are customizing workflows to create repeatable processes  • Teams that integrate AI into daily workflows are pulling ahead Read the full report: https://lnkd.in/e6KKyfBb

Turn your kids' ideas into something you can keep. We partnered with NORAD to create 3 custom GPTs just in time for the holidays. 🎄Elf Enrollment — Transform someone into an “official” Santa’s helper portrait: https://lnkd.in/ggBDyrzS 🧸 Toy Lab — Watch toy ideas become printable coloring pages: https://lnkd.in/gb77Ux-J 📖 Story Creator — Spin up a custom holiday tale:https://lnkd.in/gtt2aw2P

One year ago today, OpenAI introduced ChatGPT Pro. Since that launch I’ve treated Pro as my “first hire” at Sound for Movement, my one‑person music company for dancers and choreographers, and I’ve kept careful field notes on how I use models, Deep Research, Voice, Codex, Schedules and Memory in my daily work as a composer, founder and educator. Those notes turned into a longform essay, One Year With ChatGPT Pro as a First Hire. I’m deeply grateful for the continued support of folks like Kevin D. and Kevin Weil at OpenAI, and for everyone who’s already found it useful and has been sharing it around this week. If it’s helpful for you or your team as you think about applied AI and pedagogy, here’s the piece: https://lnkd.in/gVYB99Qz

In a new proof-of-concept study, we’ve trained a GPT-5 Thinking variant to admit whether the model followed instructions. This “confessions” method surfaces hidden failures—guessing, shortcuts, rule-breaking—even when the final answer looks correct. If we can surface when that happens, we can better monitor deployed systems, improve training, and increase trust in the outputs. Confessions don’t prevent mistakes; they make them visible. Next, we’re scaling the approach and combining it with other alignment layers—like chain-of-thought monitoring, instruction hierarchy, and deliberative methods—to improve transparency and predictability as capabilities and stakes increase. https://lnkd.in/gy9TnHsV

Codex brings concepts into view. 🎥: Madeline Zhang

Now that you’ve had the chance to get to know GPT-5.1, we pull back the curtain on how training took shape. On this episode of the OpenAI Podcast, Christina Kim and Laurentia Romaniuk join Andrew Mayne to talk about reasoning in GPT-5.1 Instant, personality controls, and how they refine model behavior at scale. Watch the full episode: openai.com/podcast.

2025 has been a pivotal year for coding with AI — moving from simple autocomplete to wrangling agents that handle full end-to-end tasks. The future of software engineering is happening in front of us. On Wednesday, Dec 3, Romain Huet, Head of Developer Experience at OpenAI and Aaron Friel, Member of Technical Staff at OpenAI are going live in our global expert community, the OpenAI Forum, to show what building with AI for engineering actually looks like right now. 🔗 Register: https://tinyurl.com/ft5pa6 “Vibe engineering,” a term Simon Willison originally tossed out half-jokingly, captures something real: we’re moving away from guess-and-hope prompting and toward a more structured, accountable craft. Engineers are still fully responsible for what they ship, but now they have a new superpower. For experienced developers, AI is becoming pure augmentation: faster exploration, deeper understanding, and a lot less time spent wrestling with boilerplate. It’s shifting the job from writing every line yourself to orchestrating systems and designing abstractions that weren’t even possible a few years ago. Aaron, who’s been coding since grade school and showed off his workflow at Dev Day, will walk through how he uses Codex to manage complexity, translate ideas into running systems, and build multi-step projects with the right prompts and structure. Watching him work is one of the clearest windows into where the role of SWE is headed. Romain and Aaron will talk about how builders are adapting, what this new craft looks like, and how engineers can use AI to unlock new capabilities and new career paths. See Codex in action. Learn how top builders are adapting. And discover why, in the age of AI, the impact engineers have is bigger than ever.

Today, ChatGPT turns 3. Were you one of the first to try ChatGPT?

You can now use ChatGPT Voice right inside chat—no separate mode needed. You can talk, watch answers appear, review earlier messages, and see visuals like images or maps in real time. If you prefer the original experience, turn on “Separate mode” under Settings → Voice Mode. Rolling out to all users on mobile and web. Just update your app.