OpenAI Developer Blog https://developers.openai.com/blog Updates for developers building with OpenAI http://www.rssboard.org/rss-specification python-feedgen en Sun, 23 Aug 2026 01:30:11 +0000 Scaling cyber defenders with Daybreak https://developers.openai.com/blog/scaling-cyber-defenders-with-daybreak Use ChatGPT, Codex Security, and open-source tools to investigate threats, validate vulnerabilities, and move from findings to reviewed, verified fixes. https://developers.openai.com/blog/scaling-cyber-defenders-with-daybreak Codex Fri, 21 Aug 2026 00:00:00 +0000 Codex as a platform: build on the open agent harness https://developers.openai.com/blog/codex-as-a-platform Build Codex into the products and workflows your users already know. https://developers.openai.com/blog/codex-as-a-platform Codex Wed, 19 Aug 2026 00:00:00 +0000 Custom Code Review rules for Codex https://developers.openai.com/blog/custom-code-review-rules-for-codex Provide more detailed rules for Codex to spot issues and better adhere your conventions during code review. https://developers.openai.com/blog/custom-code-review-rules-for-codex Codex Mon, 20 Jul 2026 00:00:00 +0000 Making private MCP servers reachable without making them public https://developers.openai.com/blog/connect-private-mcp-servers-to-openai-products How we preserved private network boundaries while supporting MCP streaming, authentication, and an inspectable client. https://developers.openai.com/blog/connect-private-mcp-servers-to-openai-products General Fri, 26 Jun 2026 00:00:00 +0000 Mastering remote engineering work from your phone https://developers.openai.com/blog/mastering-codex-remote-for-engineering Use Remote in the ChatGPT mobile app to start, steer, review, and organize engineering work. https://developers.openai.com/blog/mastering-codex-remote-for-engineering Codex Tue, 23 Jun 2026 00:00:00 +0000 How Perplexity Brought Voice Search to Millions Using the Realtime API https://developers.openai.com/blog/realtime-perplexity-computer Lessons from how Perplexity Computer's voice agent was built with the Realtime API. https://developers.openai.com/blog/realtime-perplexity-computer Audio Wed, 25 Mar 2026 00:00:00 +0000 Designing delightful frontends with GPT-5.4 https://developers.openai.com/blog/designing-delightful-frontends-with-gpt-5-4 Practical techniques for steering GPT-5.4 toward polished, production-ready frontend designs. https://developers.openai.com/blog/designing-delightful-frontends-with-gpt-5-4 General Fri, 20 Mar 2026 00:00:00 +0000 From prompts to products: One year of Responses https://developers.openai.com/blog/one-year-of-responses Five stories from developers building agentic products with the Responses API in its first year. https://developers.openai.com/blog/one-year-of-responses API Wed, 11 Mar 2026 00:00:00 +0000 Using skills to accelerate OSS maintenance https://developers.openai.com/blog/skills-agents-sdk Using skills and GitHub Actions to optimize Codex workflows in the OpenAI Agents SDK repos. https://developers.openai.com/blog/skills-agents-sdk Codex Mon, 09 Mar 2026 00:00:00 +0000 Building frontend UIs with Codex and Figma https://developers.openai.com/blog/building-frontend-uis-with-codex-and-figma Use Codex and Figma to bring real, running interfaces into Figma, refine them, and bring changes back to Codex. https://developers.openai.com/blog/building-frontend-uis-with-codex-and-figma Codex Thu, 26 Feb 2026 00:00:00 +0000 Run long horizon tasks with Codex https://developers.openai.com/blog/run-long-horizon-tasks-with-codex https://developers.openai.com/blog/run-long-horizon-tasks-with-codex Codex Mon, 23 Feb 2026 00:00:00 +0000 Shell + Skills + Compaction: Tips for long-running agents that do real work https://developers.openai.com/blog/skills-shell-tips Practical patterns for building with skills, hosted shell, and server-side compaction in the Responses API. https://developers.openai.com/blog/skills-shell-tips API Wed, 11 Feb 2026 00:00:00 +0000 15 lessons learned building ChatGPT Apps https://developers.openai.com/blog/15-lessons-building-chatgpt-apps And how we incorporated them into a Codex Skill to help you build ChatGPT Apps 10x faster. https://developers.openai.com/blog/15-lessons-building-chatgpt-apps Apps SDK Wed, 04 Feb 2026 00:00:00 +0000 Testing Agent Skills Systematically with Evals https://developers.openai.com/blog/eval-skills A practical guide to turning agent skills into something you can test, score, and improve over time. https://developers.openai.com/blog/eval-skills Codex Thu, 22 Jan 2026 00:00:00 +0000 Supercharging Codex with JetBrains MCP at Skyscanner https://developers.openai.com/blog/skyscanner-codex-jetbrains-mcp How Skyscanner integrated Codex CLI with JetBrains IDEs to speed up debugging, testing, and development workflows. https://developers.openai.com/blog/skyscanner-codex-jetbrains-mcp Codex Sun, 11 Jan 2026 00:00:00 +0000 OpenAI for Developers in 2025 https://developers.openai.com/blog/openai-for-developers-2025 A year-end roundup of the biggest model, API, and platform shifts for building production-grade agents. https://developers.openai.com/blog/openai-for-developers-2025 General Tue, 30 Dec 2025 00:00:00 +0000 Updates for developers building with voice https://developers.openai.com/blog/updates-audio-models New audio model snapshots and broader access to Custom Voices for production voice apps. https://developers.openai.com/blog/updates-audio-models Audio Mon, 22 Dec 2025 00:00:00 +0000 What makes a great ChatGPT app https://developers.openai.com/blog/what-makes-a-great-chatgpt-app How to build capabilities that make conversations better. https://developers.openai.com/blog/what-makes-a-great-chatgpt-app Apps SDK Mon, 24 Nov 2025 00:00:00 +0000 Using Codex for education at Dagster Labs https://developers.openai.com/blog/codex-for-documentation-dagster Learn how Dagster uses Codex in their open-source projects to accelerate documentation, translate content across mediums, and even measure how complete their docs are. https://developers.openai.com/blog/codex-for-documentation-dagster Codex Mon, 27 Oct 2025 00:00:00 +0000 How Codex ran OpenAI DevDay 2025 https://developers.openai.com/blog/codex-at-devday Learn how Codex helped us build experiences, demos, products, and more https://developers.openai.com/blog/codex-at-devday Codex Fri, 10 Oct 2025 00:00:00 +0000 Why we built the Responses API https://developers.openai.com/blog/responses-api How the Responses API unlocks persistent reasoning, hosted tools, and multimodal workflows for GPT-5. https://developers.openai.com/blog/responses-api API Mon, 22 Sep 2025 00:00:00 +0000 Developer notes on the Realtime API https://developers.openai.com/blog/realtime-api Details worth noticing in recent realtime speech-to-speech updates https://developers.openai.com/blog/realtime-api Audio Fri, 12 Sep 2025 00:00:00 +0000 Hello, world! https://developers.openai.com/blog/intro Introducing our developer blog https://developers.openai.com/blog/intro General Thu, 11 Sep 2025 00:00:00 +0000