DeepSeek's new Search API drops undated pages, cutting 11% of results — SEO testing checklist for visibility

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A hands-on test of DeepSeek's new Search API found its date filters removed every undated page, eliminating about 11% of results. The author outlines six practical checks SEOs can run on ranking and scoring behaviour, covering areas from localization to log analysis. Teams evaluating AI search platforms for content visibility should review the original test before relying on the API.