DevDay 2026 Highlights
OpenAI DevDay 2026 highlights 20+ updates across GPT-6 Astra, ChatGPT, Codex, APIs, security, and builder tools, grouped by impact layer.
Codex
How Codex helps Virgin Atlantic accelerate its shipping
Virgin Atlantic's engineering team faced an immovable deadline: revamp its mobile app before the holiday travel rush. By integrating OpenAI's Codex into daily workflows—generating unit tests at scale,…
The Rise of AI Agents: From AutoGPT to Claude Code
AI coding agents have moved beyond AutoGPT-style autonomous loops toward narrower, workflow-aware tools like Claude Code, Codex, Cowork, and OpenClaw. The key insight is that agent value now depends o…
Supplementary Note to the GPT-5 System Card: GPT-5-Codex
GPT-5-Codex is OpenAI's specialized version of GPT-5, optimized for agentic coding within the Codex environment. Announced via a system card addendum, its standout feature is dynamic thinking effort: …
OpenAI's cutting-edge models and Codex are now accessible on AWS
OpenAI's frontier models and Codex are now generally available on AWS, allowing enterprises to access these AI tools directly within their existing cloud ecosystem. This eliminates friction from separ…
Endava is rethinking how software gets delivered with AI agents at the core
Endava is building an AI-native software delivery model by embedding ChatGPT Enterprise, Codex, and AI agents into daily operations. Enterprise-grade tools help employees draft documents, analyze requ…
Samsung Electronics offers ChatGPT and Codex tools to its workforce
Samsung Electronics is rolling out ChatGPT Enterprise and OpenAI Codex to its global workforce in one of OpenAI's largest enterprise deployments. The move signals Samsung has moved past pilot-stage AI…
OpenAI's Codex Model
OpenAI has announced an improved version of Codex, an AI model that translates plain English into working code, now available through a private beta via the OpenAI API. The upgrade promises faster pro…
Building next-gen applications with the OpenAI Codex engine
OpenAI's Codex engine is currently powering 70 different applications that span a wide range of use cases. All of these applications are built through the OpenAI API, demonstrating Codex's versatility…
Introducing new GPT-3 features: Editing and insertion
OpenAI released new versions of GPT-3 and Codex that go beyond forward-only text completion. The models can now edit existing text and insert new content at specific points within a document. This ena…
How Codex evolved into a creative partner for OpenAI's design team
OpenAI's creative team uses Codex, its AI coding agent, to build custom creative tools, accelerate ideation, and move from rough concept to working prototype in hours. By describing intent in plain la…
NTT DATA Group reduces incident investigation time to 30 minutes using Codex
NTT DATA Group deployed ChatGPT Enterprise and Codex to roughly 9,000 employees to automate everyday tasks and speed up technical troubleshooting. The company reports incident analysis time cut to abo…
Supplement to the o3 and o4-mini system card: Codex
Codex is a cloud-based coding agent from OpenAI that handles complete development tasks—bug fixes, features, tests—while developers work in parallel. Powered by codex-1, an o3 model variant optimized …
Announcing new improvements to Codex
OpenAI's Codex update delivers major gains in speed and reliability, enhanced real-time collaboration, and stronger autonomous task handling. Available across terminal, IDE, web, and mobile, Codex now…
Fresh approaches to learning and teaching with ChatGPT Work and Codex
New education plugins for ChatGPT Work and Codex bring lesson planning, research support, and coding practice directly into existing AI workspaces. K-12 teachers can draft outlines, quizzes, and diffe…
Create a Speaker-Recognition App Using Claude Code
Build a speaker recognition internal app with Claude Code or Codex by defining scope, choosing verification, testing audio, and setting match rules.
Achieving more with GPT-5.1-Codex-Max
GPT-5.1-Codex-Max is OpenAI's newest agentic coding model designed specifically for Codex. Unlike chat assistants, it works autonomously on long-running, project-scale tasks such as refactoring and fr…
Datadog leverages Codex for system-wide code review
Datadog has adopted OpenAI's Codex to enable system-wide code review, leveraging AI to automatically analyze code changes across its platform. This integration helps improve code quality, catch issues…
Meet the Codex app
OpenAI has launched the Codex app for macOS, a native hub for AI-assisted software development. It lets developers run multiple coding agents simultaneously, manage parallel workflows, and handle long…
A Look Inside OpenAI's Internal Data Agent
OpenAI built an internal AI data agent that turns plain-language business questions into reliable data analysis. GPT-5 handles reasoning and planning, while Codex writes and runs code to process datas…