OpenAI’s Responses API: A New Foundation for Building with Models & Tools

[2025 - Day 2 - Foundation Models] Nikunj Handa shares insights from building OpenAI's Responses API, exploring how this programmatic agent API radically simplifies integration by transforming hundreds of lines of code into just a few. This talk offers valuable perspectives on the design decisions and engineering challenges behind creating an API uniquely engineered for agent-like use cases with built-in state management and semantic streaming, particularly relevant for developers building AI applications or integrating advanced reasoning capabilities. ABOUT THE SPEAKER: Nikunj Handa, Product Lead, OpenAI 👉 Sign up for our "No BS" Newsletter to get the latest technical data & AI content: https://datacouncil.ai/newsletter ABOUT DATA COUNCIL: Data Council brings together the brightest minds in data to share industry knowledge, technical architectures and best practices in building cutting edge data & AI systems and tools. FIND US: Twitter: https://twitter.com/datacouncilai LinkedIn: https://www.linkedin.com/company/datacouncil-ai/ Website: https://www.datacouncil.ai/