OpenAI’s mission is to ensure that artificial general intelligence benefits all of humanity. We’re hiring: https://t.co/dJGr6LgzPA
RT ChatGPT ChatGPT is available again on WhatsApp in the EEA, part of our work to make AI accessible in the apps people already use every day. Message the verified 1-800-CHATGPT contact to ask questions, upload images, send voice notes, create images, and use ChatGPT in many languages. Now also on Kakao in South Korea and Viber in supported markets.
GPT-5.6 is a major step forward for health intelligence. Across the lineup, we’re delivering stronger performance at lower cost: GPT-5.6 Luna outperforms GPT-5.5 at its highest reasoning setting while costing 25x less. Together, these advances raise quality while making advanced models accessible to more people globally.
As part of our ongoing efforts to strengthen our safeguards for advanced AI capabilities in biology, we’re evolving our Bio Bug Bounty into an ongoing private program, known as the OpenAI Bio Bug Bounty program and doubling rewards to $50K. We’re inviting researchers with experience in AI red teaming, security, or biosecurity to try to find a universal jailbreak that can defeat our predefined biosafety challenge against OpenAI’s frontier models. https://openai.com/index/bio-bug-bounty
RT Ethan Knight Yesterday, we made GPT-5.6 Sol Ultra generally available. Today, we're sharing that it produced a proof of the 50-year-old Cycle Double Cover Conjecture using 64 subagents in just under one hour. We're sharing the prompt and proof below. We're excited to see what you all do with Ultra!
Re ChatGPT Work reflects a shift in how people are using AI, moving beyond just answering questions to getting real work done across web, mobile, and desktop. You can ask ChatGPT Work to take on entire workflows with a single request. It will understand your goals, use context from selected apps and files, create polished documents, decks, analyses, sites, and reports, and keep work moving while you stay in control. https://openai.com/index/chatgpt-for-your-most-ambitious-work/
Re On web and mobile, ChatGPT Work is rolling out today for Pro, Enterprise, and Edu plans. It will roll out to Plus and Business plans over the next few days. In the ChatGPT desktop app, Chat, Work, and Codex are available on every plan, including Free, and is available globally to download on Windows and Mac. Codex app users can update their app as usual—it will become the new ChatGPT desktop app. https://openai.com/chatgpt-work/
Re ChatGPT Work is powered by GPT-5.6. GPT-5.6 makes ChatGPT state of the art at reasoning through complex tasks and creating materials that match your templates, reference files, and preferred style. Just describe the outcome you want, without having to spell out every step to get there.
GPT-Live is now fully rolled out to all ChatGPT users on Go, Plus, and Pro plans. Free user rollout is in progress. Update to the latest version of the ChatGPT app on iOS or Android to try it out.
Introducing GPT-Live, a new generation of voice models for natural human-AI interaction. Rolling out in ChatGPT starting today. You’ll want to turn the sound on for this one.
View quoted postListen up. Livestream at 10am.
We know you’re eager for voice updates in ChatGPT. Stay tuned, we’re cooking.
View quoted postWe’re introducing GeneBench-Pro, a research-level benchmark for a harder kind of AI progress: how well agents can navigate messy biological data, choose the right analysis path, and make judgment calls that real computational research depends on. https://openai.com/index/introducing-genebench-pro/
RT Derya Unutmaz, MD I’m very excited about this article from @OpenAI on my attempt to use GPT-5 Pro to understand the results of an experiment we did several years ago. Remarkably, GPT-5 Pro figured out the key mechanisms, as explained in the article & infographic below! https://openai.com/index/gpt-5-immunology-mystery/
We have a new version of GPT-5.5 Instant for you, and it's much more fun to talk to. Our most-used model is now better at understanding the intent behind a question and adapting its response accordingly. It also handles complex constraints more reliably and makes shopping and local recommendations more useful and cohesive. Rolling out today to paid users, tomorrow to free users.
RT OpenAI Developers More of Codex is rolling out across Europe this week. We’re bringing Computer use, the Codex Chrome extension, personalized memory, and Chronicle to Codex users in the EEA, UK, and Switzerland. https://developers.openai.com/codex/changelog/#codex-2026-06-16-app
RT Jakub Pachocki The north stars we're working towards at OpenAI all center around the mission: ensure AGI benefits all of humanity. AI should expand human agency, not make people less consequential to the future. https://openai.com/index/built-to-benefit-everyone-our-plan/
We’re bringing new capabilities to GPT-Rosalind, a model series purpose-built for life sciences research at enterprise scale. It brings GPT-5.5’s agentic coding and tool use together with stronger intelligence for drug discovery, analysis, design, and experimental workflows. https://openai.com/index/introducing-new-capabilities-to-gpt-rosalind
OpenAI frontier models and Codex are now generally available on AWS, giving enterprises a new way to build on Amazon Bedrock with OpenAI through the security, compliance, and governance workflows they already use. This is also the beginning of a broader expansion of OpenAI capabilities on AWS, including future availability for cybersecurity capabilities like Daybreak. https://openai.com/index/openai-frontier-models-and-codex-are-now-available-on-aws/
Windows users, this one’s for you. Computer use now works on Windows, so Codex can take action on your Windows computer. And with Windows support for Codex in the ChatGPT mobile app, you can start, review, and steer tasks on the go while work continues on your Windows machine. An early experience, but we’re working on more ways to keep your work moving, wherever you are.
We’re taking steps to accelerate defensive progress in biology: - Launching Rosalind Biodefense to help trusted builders develop new biodefense and pandemic preparedness capabilities. - Expanding trusted access to GPT-Rosalind for select U.S. government and allied partners supporting public health and biodefense missions. Advances in biology can strengthen our ability to prevent, detect, and respond to biological threats. Our goal is to help build a more robust ecosystem – giving trusted defenders frontier AI to develop and operate new defenses for public health and biodefense. https://openai.com/index/strengthening-societal-resilience-with-rosalind-biodefense/
Introducing OpenAI Guaranteed Capacity: a new offering that enables customers to guarantee long-term access to OpenAI compute. We’ve made long-term investments in infrastructure, partnerships, and capacity planning to help customers scale reliably. Now, Guaranteed Capacity helps customers plan ahead for critical workloads in a compute-constrained world. http://openai.com/guaranteed-capacity
We’re adding new ways for people to identify AI-generated images and understand where they came from. In addition to C2PA Content Credentials, images now also contain a SynthID watermark, and can be identified using a public verification tool to check whether an image was made by OpenAI products. https://openai.com/index/advancing-content-provenance/
Another reason to switch to Codex.
Want to (officially) use Codex at work? Send this post to your CTO to bring your team to Codex. Eligible enterprise customers who switch in the next 30 days get 2 free months of Codex usage for new users.
RT Alex Zhao parameter golf was a blast. 2,000+ submissions. 1,000+ verified github accounts. ideas ranging from quantization and depth recurrence to TTT LoRA, SSMs, H-nets, JEPA, and more. autoresearch made iteration dramatically faster — and led to emergent bulletin boards, issue threads, unofficial leaderboards, and agent-built writeups that helped everyone learn from everyone else. it felt like a glimpse of where interaction with AI is headed: humans setting taste and direction, agents helping explore, coordinate, and share what works. our goal was simple: make ml research accessible to anyone, anywhere. it was amazing to see that happen. full recap: https://openai.com/index/what-parameter-golf-taught-us/ future events: https://jobs.ashbyhq.com/openai/form/open-ai-challenge-parameter-golf
RT Micah Carroll We recently found some instances of CoT grading during the training of previously deployed models after building a system that scans all OpenAI RL runs for accidental CoT grading. We did not find clear evidence that these instances degraded CoT monitorability.
We’ve partnered with @AMD, @Broadcom, @Intel, @Microsoft, and @NVIDIA, to release Multipath Reliable Connection (MRC), a new open networking protocol that helps large AI training clusters run faster and more reliably, with less wasted GPU time. https://openai.com/index/mrc-supercomputer-networking/
Re MRC is already deployed across all of OpenAI’s largest supercomputers that we use to train frontier models, including our site with @Oracle Cloud Infrastructure (OCI) in Abilene, Texas, and in @Microsoft’s Fairwater supercomputers. MRC is now available through the @OpenComputePrj for the entire industry to use and build on.
RT OpenAI Developers Show us the Codex pets you hatched. Use /hatch to create your own Codex pet. We’ll pick 10 favorites to get 30 days of ChatGPT Pro.
Now available for ChatGPT accounts: Advanced Account Security, a new opt-in setting for people at higher risk of digital attacks, with stronger protections including phishing-resistant sign-in and more secure account recovery. https://openai.com/index/advanced-account-security/
Update: GPT-5.5 and GPT-5.5 Pro are now available in the API.
GPT-5.5 is now available in the API. The model brings higher intelligence and stronger token efficiency to complex work, helping tasks get done with fewer retries.
View quoted postRT Karan Singhal Today we’re introducing two big steps for health at OpenAI: - ChatGPT for Clinicians, a free version of ChatGPT designed for clinical work - HealthBench Professional, a new benchmark to evaluate real clinician chat tasks We’re excited about what this can unlock for care. ❤️
RT Arena.ai Arena Trends: Text-to-Image, Jan 2026 – Apr 2026 For most of the year, @GoogleDeepMind and @OpenAI traded the top spot within a tight margin - GPT-Image vs. Nano Banana - with the rest of the field clustered below 1,200. Today, GPT-Image-2 breaks away with a score of 1,512, 242 points ahead of #2 Google. The frontier continues to move.
Exciting news - GPT-Image-2 by @OpenAI has claimed the #1 spot across all Image Arena leaderboards! A clean sweep with a record-breaking +242 point lead in Text-to-Image - the largest gap we’ve seen to date. - #1 Text-to-Image (1512), +242 over #2 (Nano-banana-2 with web-search
RT Tibo Hi! Getting a lot of questions on Pro plan rate limits, so I wanted to clarify a few things: - Your Pro $100 plan includes at least 10x Plus usage, till May 31 with the 2X usage boost. - Your Pro $200 plan includes at least 20x Plus usage, till May 31 with the 2X usage boost. This is also the SAME usage this plan had since the 2x promo in February; we previously didn't document this explicitly. Now to address the confusion. Our pricing page says "5x or 20x usage", and many of you very understandably took it to mean "10x and 40x" given then 2X usage boost. That's our fault. We mixed up two things in a confusing way on that page - (1) sharing that the Pro $100 launched with a 2x boost, making it 10x Plus till May 31 and (2) sharing that Pro $200 retained its 2x boost and sharing for the first time that this equates to 20x Plus. We're going to update our pricing pages to make this clearer. Sorry it wasn't as clear as it should have in the first place.🫥 Original tweet: https://x.com/thsottiaux/status/2043075353242218768
There seems to be some confusion on what ChatGPT plans give you, and what bonuses are active right now. I got you. ChatGPT Plus $20 = 1x NO ACTIVE BONUS ChatGPT Pro Lite $100 = 5x with a 2x Bonus (10x) ChatGPT Pro $200 = 20x with a 2x Bonus (40x) The bonus is ONLY for Pro
View quoted postOur existing $200 Pro tier still remains our highest usage option. And as a thank you to our existing Pro users on the $200 tier, we’re extending our 2x Codex usage promo (until May 31st) and we’ve reset your Codex rate limits (yes, again).
We’re updating our ChatGPT Pro and Plus subscriptions to better support the growing use of Codex. We’re introducing a new $100/month Pro tier. This new tier offers 5x more Codex usage than Plus and is best for longer, high-effort Codex sessions. In ChatGPT, this new Pro tier
View quoted postRT Tibo Three million people are now using Codex weekly - up from two million a little under a month ago. Incredible to see the growth. Thank you to all of you and to the ecosystem we’re part of. To celebrate, we’re resetting rate limits so you can keep building, and we’ll reset them every additional 1M users until we reach 10M, so we can keep celebrating along the way. Enjoy and thank you! Original tweet: https://x.com/thsottiaux/status/2041655710346572085
RT Kevin Weil 🇺🇸 💥 New in Prism today: Paper Review, an AI workflow for reviewing technical and scientific papers. This is the opposite of AI slop: we're using AI to improve scientific rigor, correctness, and reproducibility. Original tweet: https://x.com/kevinweil/status/2041573799775367525
ChatGPT is now available in CarPlay. The voice mode you know, now available on-the-go. Rolling out to iPhone users running iOS 26.4+ where CarPlay is supported.
Today, we closed our latest funding round with $122 billion in committed capital at an $852B post-money valuation. The fastest way to expand AI’s benefits is to put useful intelligence in people’s hands early and let access compound globally. This funding gives us resources to lead at scale. https://openai.com/index/accelerating-the-next-phase-ai/
RT OpenAI Developers We're rolling out plugins in Codex. Codex now works seamlessly out of the box with the most important tools builders already use, like @SlackHQ, @Figma, @NotionHQ, @gmail, and more. http://developers.openai.com/codex/plugins Original tweet: https://x.com/OpenAIDevs/status/2037296316104282119
The more AI can do, the more we need to ask what it should and shouldn’t do. OpenAI researcher @w01fe joins host @AndrewMayne to explore the Model Spec, the public framework that defines how models are intended to behave. They break down how it works in practice, from the chain of command that resolves conflicting instructions to the way it evolves over time through real-world use, feedback, and new model capabilities.Listen to the OpenAI Podcast on— Spotify https://open.spotify.com/show/0zojMEDizKMh3aTxnGLENP Apple https://podcasts.apple.com/us/podcast/openai-podcast/id1820330260 YouTube https://youtu.be/H8GMRxG8suw
It’s now easier to find, reuse, and build on the files you upload and create in ChatGPT. You can quickly reference files in a chat using recent files in the toolbar, ask ChatGPT about something you’ve uploaded, or browse your files in the new Library tab in the web sidebar. Rolling out globally for Plus, Pro, and Business users, and coming soon to users in the EEA, Switzerland, and the UK.
RT OpenAI Developers Meet Codex for Students. We're offering college students in the U.S. and Canada $100 in Codex credits. Our goal is to support students to learn by building, breaking, and fixing things. http://chatgpt.com/codex/students Original tweet: https://x.com/OpenAIDevs/status/2035033703274201109
RT Marcus Williams Sharing some of the work I’ve been doing at OpenAI: we now monitor 99.9% of internal coding traffic for misalignment using our most powerful models, reviewing full trajectories to catch suspicious behavior, escalate serious cases quickly, and strengthen our safeguards over time. Original tweet: https://x.com/Marcus_J_W/status/2034677345681068140
AI is starting to help solve real issues in healthcare for patients and doctors. OpenAI’s Head of Health Dr. Nate Gross and Health AI Research Lead Karan Singhal join @AndrewMayne to discuss how we're building new models and products to meet the world's health needs.Listen to the OpenAI Podcast on— Spotify https://open.spotify.com/show/0zojMEDizKMh3aTxnGLENP Apple https://podcasts.apple.com/us/podcast/openai-podcast/id1820330260 YouTube https://youtu.be/VAzryGwnJW8
RT Romain Huet Developers coming from other tools are often impressed by what Codex finds in code review. In this video, @majatrebacz and I show how to set it up and walk through issues Codex finds in real PRs. Included with ChatGPT Plus/Pro (or ~$1/run with credits). Original tweet: https://x.com/romainhuet/status/2031517213799362760
We’re acquiring Promptfoo. Their technology will strengthen agentic security testing and evaluation capabilities in OpenAI Frontier. Promptfoo will remain open source under the current license, and we will continue to service and support current customers. https://openai.com/index/openai-to-acquire-promptfoo/
RT Sachin Katti Construction is underway at our site in Port Washington, Wisconsin. This is an important step in our long-term compute strategy. Grateful to our partners @VantageDC and @Oracle who are helping bring this capacity online. We’re been making rapid progress expanding the infrastructure behind OpenAI. Last week we announced an expansion of our foundational work with @NVIDIA systems that will power the next generation of models. We also shared how we're continuing to deepen our work across the ecosystem, including lean in further with @awscloud. Building world-class AI requires world-class infrastructure. Excited to see the work happening on the ground in Wisconsin and grateful to the teams and partners helping make it happen. Original tweet: https://x.com/sk7037/status/2029911649298362524
We're publishing a new evaluation suite and research paper on Chain-of-Thought (CoT) Controllability. We find that GPT-5.4 Thinking shows low ability to obscure its reasoning—suggesting CoT monitoring remains a useful safety tool. https://openai.com/index/reasoning-models-chain-of-thought-controllability/
GPT-5.4 Thinking and GPT-5.4 Pro are rolling out now in ChatGPT. GPT-5.4 is also now available in the API and Codex. GPT-5.4 brings our advances in reasoning, coding, and agentic workflows into one frontier model.GPT-5.4 is our most factual and efficient model: fewer tokens, faster speed. In ChatGPT, GPT-5.4 Thinking has improved deep web research, better context retention when it thinks for longer—and oh—you can now interrupt the model and add instructions or adjust its direction mid-response. Steering is available this week on Android and web. iOS coming soon.
RT Victor Powell 🧵1/ We've brought the most advanced AI to Prism by introducing Codex to Prism. Prism is already the best place for scientific writing to happen—and with Codex, now you can write, compute, analyze, and iterate all in one place. Original tweet: https://x.com/vicapow/status/2029272574426026083
RT OpenAI Developers The Codex app is now on Windows. Get the full Codex app experience on Windows with a native agent sandbox and support for Windows developer environments in PowerShell. https://developers.openai.com/wendows Original tweet: https://x.com/OpenAIDevs/status/2029252453246595301
1/3 We heard your feedback loud and clear, and 5.3 Instant reduces the cringe.2/3 GPT-5.3 Instant also has fewer unnecessary refusals and preachy disclaimers.3/3 GPT-5.3 Instant gives you more accurate answers. When using web search, you also get: - Sharper contextualization - Better understanding of question subtext - More consistent response tone within the chat
Helping AI reach more people requires deep collaboration across the ecosystem. Today we’re announcing new investment, with support from @SoftBank, @NVIDIA, and @Amazon, to scale the infrastructure needed to bring AI to everyone. https://openai.com/index/scaling-ai-for-everyone/
AI is changing how work gets done, and we want to lead that transition responsibly. Excited to welcome Arvind KC as Chief People Officer to help OpenAI grow and be a model for how AI-enabled work can expand what people can do. https://openai.com/index/arvind-kc-chief-people-officer/
RT Sachin Katti Stargate is the umbrella brand for our compute strategy. It’s about mobilizing the full ecosystem to deliver a step-change in global AI compute — and over the past few quarters that vision has become reality. Since announcing Stargate in January 2025, OpenAI has expanded from a mostly single-provider model to a broad partner network across clouds, silicon, and infrastructure: SoftBank, NVIDIA, AMD, Broadcom, Oracle, Microsoft, AWS, CoreWeave, and Cerebras. Demand is compounding, and no single provider, chip, or cloud can carry the load. A diversified compute model is the only way to scale at the pace AI requires. We exited 2025 with ~2 GW of available compute and a model designed to scale: long-term capacity agreements, purpose-built colo deployments, and deep collaboration on next-generation datacenter design. Compute leadership is the foundation of research and product velocity — and Stargate is how we build what comes next. Original tweet: https://x.com/sk7037/status/2026067771394838629
RT Sam Altman Peter Steinberger is joining OpenAI to drive the next generation of personal agents. He is a genius with a lot of amazing ideas about the future of very smart agents interacting with each other to do very useful things for people. We expect this will quickly become core to our product offerings. OpenClaw will live in a foundation as an open source project that OpenAI will continue to support. The future is going to be extremely multi-agent and it's important to us to support open source as part of that. Original tweet: https://x.com/sama/status/2023150230905159801
RT Jakub Pachocki Very excited about the "First Proof" challenge. I believe novel frontier research is perhaps the most important way to evaluate capabilities of the next generation of AI models. We have run our internal model with limited human supervision on the ten proposed problems. The problems require expertise in their respective domains and are not easy to verify; based on feedback from experts, we believe at least six solutions (2, 4, 5, 6, 9, 10) have a high chance of being correct, and some further ones look promising. We will only publish the solution attempts after midnight (PT), per the authors' guidance - the sha256 hash of the PDF is d74f090af16fc8a19debf4c1fec11c0975be7d612bd5ae43c24ca939cd272b1a . This was a side-sprint executed in a week mostly by querying one of the models we're currently training; as such, the methodology we employed leaves a lot to be desired. We didn't provide proof ideas or mathematical suggestions to the model during this evaluation; for some solutions, we asked the model to expand upon some proofs, per expert feedback. We also manually facilitated a back-and-forth between this model and ChatGPT for verification, formatting and style. For some problems, we present the best of a few attempts according to human judgement. We are looking forward to more controlled evaluations in the next round! http://1stproof.org #1stProof Original tweet: https://x.com/merettm/status/2022517085193277874
Now in deep research you can: - Connect to apps in ChatGPT and search specific sites - Track real-time progress and interrupt with follow-ups or new sources - View fullscreen reportsDeep research in ChatGPT is now powered by GPT-5.2. Rolling out starting today with more improvements.
This week's podcast is all about ads. Asad Awan, one of the leads behind ads at OpenAI, joins @AndrewMayne to share how we came up with our ad principles and how ads in ChatGPT free and Go tiers expand AI access for all.Listen to the OpenAI Podcast on— Spotify https://open.spotify.com/episode/0qR8WghMlv19sF08bQDClM?si=HS9Pr2XLTMusVXGyAbWhfw Apple https://podcasts.apple.com/us/podcast/episode-13-the-thinking-behind-ads-in-chatgpt/id1820330260?i=1000748954840 YouTube https://youtu.be/2agJo3Jf_O4
We’re starting to roll out a test for ads in ChatGPT today to a subset of free and Go users in the U.S. Ads do not influence ChatGPT’s answers. Ads are labeled as sponsored and visually separate from the response. Our goal is to give everyone access to ChatGPT for free with fewer limits, while protecting the trust they place in it for important and personal tasks. http://openai.com/index/testing-ads-in-chatgpt/
RT OpenAI Developers Doors are open at the Codex hackathon 🛠️ We're excited to be here with the Codex community and will be sharing behind-the-scenes clips and updates in this thread throughout the day. You can just build things. Original tweet: https://x.com/OpenAIDevs/status/2019513755621843450
GPT-5 was connected to an autonomous lab: it designed experiments, the lab executed them, and the results informed the next designs across six iterations. In this setup, GPT-5 designed batches of experiments, the lab executed them, and the data fed back into the next round. We repeated that cycle six times, exploring 36,000+ reaction compositions across 580 automated plates.We worked with @Ginkgo to connect GPT-5 to an autonomous lab, so it could propose experiments, run them at scale, learn from the results, and decide what to try next. That closed loop brought protein production cost down by 40%.
RT OpenAI Developers The Codex app is here. Let’s dig in. Join @romainhuet, @dkundel, @embirico, @thsottiaux, and @ajambrosino to talk about your skills, automations, and how Codex changes how software gets built. Reply with your questions. We might answer them live. https://x.com/i/spaces/1lPKqvOgPQNGb Original tweet: https://x.com/OpenAIDevs/status/2018423551058198930
Re With the Codex app you can: - Multitask effortlessly: Work with multiple agents in parallel and keep agent changes isolated with worktrees - Create & use skills: package your tools + conventions into reusable capabilities ⁃ Set up automations: delegate repetitive work to Codex with scheduled workflows in the background
Introducing Prism, a free workspace for scientists to write and collaborate on research, powered by GPT-5.2. Available today to anyone with a ChatGPT personal account: https://prism.openai.com/Prism offers unlimited projects and collaborators in a single, cloud-based, LaTeX-native workspace. GPT-5.2 works inside your project with access to paper structure, equations, references, and surrounding context—right where the work happens.
RT Sam Altman Tomorrow we’re hosting a town hall for AI builders at OpenAI. We want feedback as we start building a new generation of tools. This is an experiment and a first pass at a new format — we’ll livestream the discussion on YouTube at 4 pm PT. Reply here with questions and we’ll answer as many as we can! Original tweet: https://x.com/sama/status/2015548504194654707
1/6 Meet the Frontier Builders.2/6 @kareemamin is building the interface between creativity and output with @Clay.3/6 @kath_mcmahon and @velvetatom are pushing biological intelligence to new places with @ValthosTech.4/6 @thejessezhang and @ashwinsreenivas are rebuilding how businesses talk to customers with @decagonAI.5/6 @christinacacioppo is reshaping how trust works at scale with @Vanta.6/6 @HeggieConnor is turning data into intelligent go-to-market systems with @unifygtm.