"Spellcheck for Facts": Perplexity-Powered Site Fact-Checks Speech Sentence-by-Sentence in 0.8s
jeffgrimes9 · x · 2026-11-09
A developer used Perplexity's Product Builder teammate to create a "spellcheck for facts" website: it slices your speech audio into sentences, sends each to the Perplexity Decisions API with its new web grounding feature, and overlays fact-check annotations on every sentence of a talk.
In the demo, each sentence was checked against web sources in about 0.8 seconds, and the entire sequence cost under 3/4 of a cent in Decisions API credits. A try-it link is included.
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