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Perplexity adds live web evidence to its Decisions API
Perplexity says Decisions API requests can now set web_grounding so the service runs a Fast Search for each question and adds results to the evidence used for probability answers. The response exposes search results; a failed search can leave less evidence. Its published tests report better accuracy on time-sensitive questions, but these are vendor-run results. Each completed search costs $0.001 plus billed input tokens, so multi-question uses can add up.
Primary source · Perplexity · November 4, 2026
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