I feel like “streaming” will be more and more of a concept in 2026. We can stream HTML, but rarely do. With AI APIs these days, we’re seeing streaming much more commonly. We want to see that LLM kick out an answer word-by-word, as the perceived performance is better that way. What about a JSON […]

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Streaming JSON responses is becoming increasingly relevant in 2026, particularly with AI APIs that stream word-by-word for better perceived performance. While streaming HTML is possible but rarely used, JSON streaming presents unique challenges since JSON must be fully valid to decode. A technique demonstrates how to implement JSON streaming in approximately 200 lines of JavaScript code, addressing the validation requirements while enabling progressive data delivery.

Streaming JSON in just 200 lines of JavaScript – Frontend Masters Blog