OpenAI Blog

Why Codex Security Doesn’t Include a SAST Report

A deep dive into why Codex Security doesn’t rely on traditional SAST, instead using AI-driven constraint reasoning and…

Designing AI agents to resist prompt injection

How ChatGPT defends against prompt injection and social engineering by constraining risky actions and protecting…

From model to agent: Equipping the Responses API with a computer environment

How OpenAI built an agent runtime using the Responses API, shell tool, and hosted containers to run secure, scalable…

Rakuten fixes issues twice as fast with Codex

Improving instruction hierarchy in frontier LLMs

IH-Challenge trains models to prioritize trusted instructions, improving instruction hierarchy, safety steerability,…

New ways to learn math and science in ChatGPT

ChatGPT introduces interactive visual explanations for math and science, helping students explore formulas, variables,…

OpenAI to acquire Promptfoo

OpenAI is acquiring Promptfoo, an AI security platform that helps enterprises identify and remediate vulnerabilities in…

Codex Security: now in research preview

Codex Security is an AI application security agent that analyzes project context to detect, validate, and patch complex…

How Descript engineers multilingual video dubbing at scale

Using OpenAI reasoning models, Descript unlocked automatic localization of large content libraries without losing…

How Balyasny Asset Management built an AI research engine

By combining rigorous model evaluation, full-platform use of OpenAI, and agent workflows, Balyasny is reinventing…

Reasoning models struggle to control their chains of thought, and that’s good

OpenAI introduces CoT-Control and finds reasoning models struggle to control their chains of thought, reinforcing…

GPT-5.4 Thinking System Card

Introducing GPT-5.4

Introducing GPT-5.4, OpenAI’s most most capable and efficient frontier model for professional work, with…

Ensuring AI use in education leads to opportunity

OpenAI shares new tools, certifications, and measurement resources to help schools and universities close AI capability…

Introducing the Adoption news channel

Practical insights and frameworks to turn AI progress into business advantage

VfL Wolfsburg turns ChatGPT into a club-wide capability

By focusing on people, not pilots, the Bundesliga club is scaling efficiency, creativity, and knowledge—without losing…

Introducing ChatGPT for Excel and new financial data integrations

OpenAI introduces ChatGPT for Excel and new financial app integrations, powered by GPT-5.4 to accelerate modeling,…

The five AI value models driving business reinvention

Five AI value models show how leaders can sequence AI from workforce fluency to process reinvention and build durable…

Extending single-minus amplitudes to gravitons

A new preprint extends single-minus amplitudes to gravitons, with GPT-5.2 Pro helping derive and verify nonzero…

Understanding AI and learning outcomes

OpenAI introduces the Learning Outcomes Measurement Suite to assess AI’s impact on student learning across diverse…

How Axios uses AI to help deliver high-impact local journalism

Axios COO Allison Murphy explains how the company uses AI to support local reporters, streamline newsroom workflows,…

GPT-5.3 Instant System Card

GPT-5.3 Instant: Smoother, more useful everyday conversations

Our agreement with the Department of War

Details on OpenAI’s contract with the Department of War, outlining safety red lines, legal protections, and how AI…

Joint Statement from OpenAI and Microsoft

Microsoft and OpenAI continue to work closely across research, engineering, and product development, building on years…

Scaling AI for everyone

Today we’re announcing $110B in new investment at a $730B pre money valuation. This includes $30B from SoftBank, $30B…

OpenAI and Amazon announce strategic partnership

OpenAI and Amazon announce a strategic partnership bringing OpenAI’s Frontier platform to AWS, expanding AI…

Introducing the Stateful Runtime Environment for Agents in Amazon Bedrock

Stateful Runtime for Agents in Amazon Bedrock brings persistent orchestration, memory, and secure execution to…

An update on our mental health-related work

OpenAI shares updates on its mental health safety work, including parental controls, trusted contacts, improved…

Pacific Northwest National Laboratory and OpenAI partner to accelerate federal permitting

OpenAI and Pacific Northwest National Laboratory introduce DraftNEPABench, a new benchmark evaluating how AI coding…

OpenAI Codex and Figma launch seamless code-to-design experience

OpenAI and Figma launch a new Codex integration that connects code and design, enabling teams to move between…

Disrupting malicious uses of AI | February 2026

Our latest threat report examines how malicious actors combine AI models with websites and social platforms—and what it…

Arvind KC appointed Chief People Officer

OpenAI appoints Arvind KC as Chief People Officer to help scale the company, strengthen its culture, and lead how work…

Why we no longer evaluate SWE-bench Verified

SWE-bench Verified is increasingly contaminated and mismeasures frontier coding progress. Our analysis shows flawed…

OpenAI announces Frontier Alliance Partners

OpenAI announces Frontier Alliance Partners to help enterprises move from AI pilots to production with secure, scalable…

Our First Proof submissions

We share our AI model’s proof attempts for the First Proof math challenge, testing research-grade reasoning on…