OpenAI showcased major product launches at their DevDay including the Apps SDK, AgentKit, and Codex now generally available with SDK and enterprise features. They introduced new models such as gpt-5-pro, gpt-realtime-mini-2025-10-06, gpt-audio-mini-2025-10-06, gpt-image-1-mini, and sora-2 with a pro variant. The Apps SDK enables embedding interactive apps inside ChatGPT with partners like Canva, Figma, Zillow, and Coursera.

AgentKit offers a full stack for building and deploying production agents with tools like ChatKit and Guardrails. Codex supports speech and controller-driven coding, credited with high internal shipping velocity. Pricing for GPT-5 Pro was revealed at $15 input and $120 output per million tokens. "OpenAI turned ChatGPT into an application platform" and "AgentKit built a working agent in under 8 minutes" were highlights.