HOME / AI / AI SEARCH API PROVIDERS WITH A FREE PLAN / OPENSOLR

Opensolr

A complete website search platform with managed Solr hosting

RANKED #1 · AI SEARCH API PROVIDERS WITH A FREE PLANLISTERSCORE 96.0

Opensolr provides AI site search and managed Apache Solr hosting. It offers hybrid vector search, a RAG API, and web crawling capabilities.

Best for	Drupal and WordPress developers seeking integrated search solutions
Website	opensolr.com

Company facts

Founded	2011
Headquarters	Cluj-Napoca, RO
Social profiles	LinkedIn, X, GitHub

Facilities and features

Published pricing
Free plan
Self-serve sign-up
API
Integrations
SOC 2
GDPR

What stands out

The AI tool offers one-click modules for Drupal and WordPress integration.

“One-click modules for Drupal and WordPress, a LangChain vector store for Python, REST for everything else.”Opensolr, own website

The AI tool utilises server-side GPU embeddings for hybrid search.

“Underneath it is the same managed Solr cloud, the same server-side GPU embeddings, the same hybrid BM25 + kNN engine.”Opensolr, own website

Worth knowing

Shared plans enforce strict per-IP rate limits to protect infrastructure.

“Every shared server enforces a per IP rate limit starting at 150 requests per minute .”Opensolr, own website

Strengths and trade-offs

The AI tool offers one-click modules for Drupal and WordPress integration.
The AI tool utilises server-side GPU embeddings for hybrid search.

Shared plans enforce strict per-IP rate limits to protect infrastructure.

Appears in

AIVERIFIED

How Opensolr ranks

#1 in AI search API providers with a free plan

How the score is made up: Evidence on its own site 20; How complete its published information is 20; Fit to this ranking's criteria 40; Buying information on its own site 16.

“Managed Solr hosting, index, hybrid search & RAG API.”Opensolr, own website

“Start free Learn more Fair use Partners Trust Center”Opensolr, own website

#1 in AI search API providers with a free trial

How the score is made up: Evidence on its own site 20; How complete its published information is 20; Fit to this ranking's criteria 40; Buying information on its own site 16.

“Managed Solr hosting, index, hybrid search & RAG API.”Opensolr, own website

“No Setup Fees Cancel Anytime Deploy in Seconds Scale Up or Down Freely Start free Learn more Fair use Partners Trust Center”Opensolr, own website

#1 in Best AI search API providers

How the score is made up: Evidence on its own site 20; How complete its published information is 20; Fit to this ranking's criteria 40; Buying information on its own site 16.

“AI site search for any website. Managed Solr hosting, index, hybrid search & RAG API.”Opensolr, own website

#2 in Best AI site search tools

How the score is made up: Evidence on its own site 20; How complete its published information is 20; Fit to this ranking's criteria 40; Buying information on its own site 16.

“AI site search for any website. Managed Solr hosting, index, hybrid search & RAG API.”Opensolr, own website

Alternatives to Opensolr

Agentset Build AI chat and search	#2 in AI search API providers with a free plan	92.0
Octen Real-time search infrastructure with low latency and high reliability	#3 in AI search API providers with a free plan	92.0
You.com The AI search assistant for your mind	#4 in AI search API providers with a free plan	92.0
Algolia	#5 in AI search API providers with a free plan	90.0
Face Search AI Search the web with a face	#6 in AI search API providers with a free plan	90.0
SearchJet Ship production search in minutes, not quarters.	#7 in AI search API providers with a free plan	90.0

Questions about Opensolr

Who is Opensolr best for?

Opensolr is best for drupal and WordPress developers seeking integrated search solutions.

Where does Opensolr rank?

Opensolr is ranked #1 in AI search API providers with a free plan (Lister Score 96.0), #1 in AI search API providers with a free trial (Lister Score 96.0), #1 in Best AI search API providers (Lister Score 96.0), #2 in AI site search tools with a free trial (Lister Score 96.0) and #2 in Best AI site search tools (Lister Score 96.0).

What are the best alternatives to Opensolr?

The closest alternatives on Lister are Agentset (#2 in AI search API providers with a free plan), Octen (#3 in AI search API providers with a free plan) and You.com (#4 in AI search API providers with a free plan).

Where is Opensolr based?

Opensolr is headquartered in Cluj-Napoca, RO, and was founded in 2011.

Is this your company?

Claim Opensolr to suggest corrections to its listing (pricing, features, details) or ask about an enhanced profile. We review every claim before anything changes.