← FeedCopy▾✕ Close copy menuCopy linkCopy AI promptCopy sourcePost on X ↗OpenAI· GPT / ChatGPT / APIHarness engineering: leveraging Codex in an agent-first worldNo announcement content.From the sourceBy Ryan Lopopolo, Member of the Technical Staffopenai.comVisit source ↗openai.comAnnounced11 Feb 2026 09:00 UTCDetected03 Aug 2026 21:11 UTC (+173d after)Other storiesOpenAI · 28 AugOur decision on Cursor following its acquisition by SpaceXOpenAI · 28 AugSupporting Thailand’s next generation of AI startupsPartnershipOpenAI · 27 AugBetter answers, broader thinking: What students gain from ChatGPT and critical-thinking trainingResearch paperOpenAI · 27 AugExpanding OpenAI’s presence in BrazilAvailability change