Linkup Deep Search | EmpirioLabs AI Docs

Linkup · Research & Search

POST /v1/search

Iterative AI search that keeps querying when initial results are insufficient, returning more comprehensive answers than Standard mode.

At a glance

Field	Value
Model id	`linkup-deep-search`
Input modalities	Text
Output modalities	Text
Context window	100K
Weight precision	-
Features	web_search, deep_research
Native inference	No
New	No
Supported endpoints	`POST /v1/search`, `POST /v1/chat/completions`, `POST /v1/responses`, `POST /v1/messages`

Pricing

Charge	Spec	Rate
Per Message	fixed	$0.13

Example request

$ curl https://api.empiriolabs.ai/v1/search \
>   -H 'Authorization: Bearer $EMPIRIOLABS_API_KEY' \
>   -H 'Content-Type: application/json' \
>   -d '{"model": "linkup-deep-search", "query": "latest LLM benchmarks 2026"}'

Parameters

Parameter	Type	Required	Default	Description
`query`	string	yes	-	The natural-language query to search/research/answer.
`output_type`	enum	no	`"sourcedAnswer"`	searchResults \| sourcedAnswer. sourcedAnswer returns a synthesized answer with citations; searchResults returns raw hits. · Allowed: `sourcedAnswer`, `searchResults`
`domain_filter_mode`	enum	no	`"None"`	include \| exclude. Whether the domain filter lists allowed or blocked domains. · Allowed: `None`, `Include`, `Exclude`
`include_domains`	string	no	-	Comma-separated domains or URLs to include
`exclude_domains`	string	no	-	Comma-separated domains or URLs to exclude
`prioritize_domains`	string	no	-	Comma-separated domains to prefer via query guidance
`from_date`	string	no	-	Only include sources published on or after this date. Format: YYYY-MM-DD.
`to_date`	string	no	-	Only include sources published on or before this date. Format: YYYY-MM-DD.
`include_images`	boolean	no	false	Include relevant image URLs in the results.
`image_count`	number	no	`6`	Maximum number of images returned. · Range: 1 – 45
`enable_inline_citations`	boolean	no	true	Embed [N] citations inline in the synthesized answer.
`include_sources`	boolean	no	true	Return the list of source URLs alongside the answer.
`max_results`	number	no	-	Maximum number of results returned. · Range: 1 – 100

Notes

Iterative search — retries when initial results are insufficient.

Machine-readable schema: GET https://api.empiriolabs.ai/v1/models/linkup-deep-search.