Using lazy-loading for data in ChatGPT apps
Aggressively front-load data in ChatGPT apps instead of using traditional lazy-loading techniques.
Front-load aggressively by sending as much data as possible into the initial tool response and hydrating the widget via window.openai.toolOutput. This usually results in a faster, more responsive experience.
Defaulting to lazy-loading (fetching data when the user clicks, loading details on demand) in ChatGPT apps.
Tool calls in ChatGPT can involve delays of several seconds due to sandboxing and model reasoning. Front-loading data minimizes these delays by providing necessary information upfront.
Reverse the traditional lazy-loading paradigm in ChatGPT apps. Aggressively front-load data into the initial tool response and hydrate widgets directly, as tool calls can introduce significant delays.
- 15 lessons learned building ChatGPT Apps ↗OpenAI Developers Blog · OpenAI Developers Blog · Sep 3, 2026 · paraphrased
First seen on Subvolts Sep 3, 2026. Updated Sep 11, 2026. Spotted a problem? Tell us.
- 15 lessons learned building ChatGPT AppsOpenAI · OpenAI Developers Blog · Sep 3, 2026
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
- HeuristicDefine task completion clearly to avoid premature stoppingExplicitly define what 'done' means for a task to ensure AI models complete the full scope. · 10 min
- Anti-patternBuilding agent infrastructure from scratchAvoid piecing together agent infrastructure; use standardized SDKs and native sandbox support. · 5 min
- Setting tipAgent workspace portability with Manifest abstractionUse the Manifest abstraction to describe agent workspaces for portability across different providers. · 10 min
- ToolOpenAI Agents SDK for building agentsSDK for building agents that can inspect files, run commands, edit code, and work on long-horizon tasks. · 15 min
- Anti-patternOverly specific instructions for advanced AI modelsAvoid detailed itineraries; newer models handle nuance and ambiguity better. · 10 min
- Anti-patternPrompting AI to read all project docs before every editAvoid forcing AI to read extensive documentation before simple edits; use contextual pointers instead. · 10 min
Questions people ask
- Which AI tools does this work with?
- The sources used it with ChatGPT.
- Where did this come from?
- OpenAI Developers Blog (OpenAI Developers Blog). Subvolts collected, normalized and credited it; the link above opens the original.

