Smooth Text Streaming in AI SDK v5
Blog post from Upstash
Smooth text streaming is a technique used to enhance the user experience in AI chat interfaces by displaying text in a flowing manner rather than in abrupt chunks. This method, employed by major companies, involves decoupling network streaming from visual streaming to present text character by character at a consistent speed, thus creating a natural reading experience. The AI SDK offers a built-in feature for smooth streaming, but a more flexible approach involves creating a frontend hook that buffers incoming text chunks and animates them with a typewriter effect. This hook maintains separate states for raw chunks and the currently visible text, employing requestAnimationFrame for smooth animation and allowing customization of speed and chunking. By integrating this streaming component with the AI SDK, developers can ensure that AI responses are delivered in a conversational and polished manner, enhancing the overall user interaction. While some may argue that this could artificially delay responses, the slight delay actually contributes to a fluid and coherent user experience.