# DeepSeek opens search engine API, filters GEO manipulation

Published: 2026-10-19T15:20:18.823Z · Source: DeepSeek API documentation (https://api-docs.deepseek.com/updates)
Source date: 2026-10-19

DeepSeek opened its previously internal-only search engine to developers on October 17, 2026, per its own API documentation: a Search API returning indexed pages with metadata, and a Fetch API returning a single page as Markdown, both priced at $0.75 per 1,000 successful requests (failed or empty requests aren't billed). Calls routed through Claude Code, Codex or DeepSeek Harness are free until November 1. Each result carries a 0-4 "authority" field — 3 or above is "highly authoritative," -1 is unknown — and DeepSeek says the engine, which it describes as indexing "hundreds of billions" of pages, filters "SEO spam, GEO manipulation, and low-quality AIGC through strict detection mechanisms." DeepSeek's documentation does not explain how pages are assigned a tier or how the manipulation detection works.

Why it matters: DeepSeek is now one of the few search providers to put an explicit authority score and an anti-GEO-manipulation filter in front of developers by default, even though — like Google's quality-rater rubric — it won't say how either judgment is made.

## What this answers

**Does DeepSeek have a search API?**

Yes — on October 17, 2026, DeepSeek opened its previously in-house search engine to developers through a Search API (indexed pages with metadata) and a Fetch API (a single page returned as Markdown), priced at $0.75 per 1,000 successful requests, per DeepSeek's own API documentation.

**What is DeepSeek's search result authority tier?**

A 0-4 score DeepSeek assigns to each result, where 3 or above means "highly authoritative" and -1 means unknown; DeepSeek's documentation does not explain how a page receives a given tier.

**Does DeepSeek's search engine filter GEO manipulation?**

DeepSeek says its search engine filters "SEO spam, GEO manipulation, and low-quality AIGC through strict detection mechanisms," but has not defined GEO manipulation or described how the detection works, per its API documentation.


Canonical: https://anythingengineoptimization.com/item/2026-10-19-deepseek-opens-search-engine-api-filters-geo-manipulation/
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