Pricing & Billing

How does Opensolr Work?

Infrastructure & Plans

How Does Opensolr Work?

Infrastructure, plan types, billing, and how to get your first Opensolr Index running in under a minute.

Opensolr is a managed Apache Solr hosting platform. You get production-ready Solr indexes in the cloud, without running or maintaining any Solr infrastructure yourself. Here is how everything works — from the global infrastructure to your first query.

Global Infrastructure

Opensolr operates data centers across multiple regions worldwide, running primarily on AWS and Hetzner AG bare-metal servers. When you create an Opensolr Index, you choose the Solr version and the region closest to your users — your data stays in that region.

US-East / US-West

Canada

EU-Central

EU-East / EU-West

China / Hong Kong

Australia

Additional regions available on request for dedicated plans.

How Your Opensolr Index Runs

Opensolr runs on large, dedicated bare-metal servers. Each Solr Index is securely containerized — your data and processes are fully isolated from other customers. Resources are dynamically allocated based on actual usage, so performance is consistent across all plan types. The difference between plans is not speed, but how much storage, bandwidth, and support you get.

Resource	What it controls
Disk Space	How much data your index can store
Monthly Bandwidth	Outgoing search traffic from Opensolr to your application
Index Count	How many separate Solr indexes you can create under one account
Support & SLA	Response time guarantees and uptime commitments

You can upgrade or downgrade any of these resources at any time.

Plan Types

Shared Cloud

Shared Solr Cloud

Multiple customers on the same server, resources shared. Indexes are fully isolated — no security concerns. The most affordable option, ideal for normal traffic and smaller projects.

Get started free →

Resilient — Shared

Shared Resilient Cluster

Multiple dedicated servers with load balancing and replicas, but resources shared across customers. Better performance under heavy load at a lower cost than a fully dedicated cluster.

View pricing →

Dedicated

Dedicated Standalone

One server dedicated exclusively to your account. No resource sharing, no noisy neighbors. Great for predictable, stable, high-performance workloads.

View pricing →

Enterprise

Dedicated Cluster

Full cluster of dedicated servers exclusively for you. Unlimited indexes, redundancy, replication, multi-region options. Built for enterprise and mission-critical workloads.

Learn about clusters →

Billing

All Opensolr plans are pre-paid. No hidden costs, no surprise fees, no overages. What you see on the Pricing Page is exactly what you pay.

Pro-rated changesUpgrades and downgrades calculated to the day. You only pay for what you use.

Flexible customizationStart from a pre-defined package and customize disk, bandwidth, index count to your exact needs.

CancellationCancel anytime. Unused days converted to account credit. Details →

Refund policyAvailable for new accounts within the first 10 days. Details →

Getting Started

1Register free — free forever, no credit card required. Takes under 60 seconds.

2Go to Solr → Add New Index. Choose your Solr version and the region closest to your users.

3Your index is ready in under a minute. Upload your schema (or use a default one) via the Config Files panel.

4Start indexing data via the Solr REST API — POST /solr/YOUR_INDEX/update — or connect your CMS or Web Crawler.

Free Plan Includes — free forever

1 Opensolr Index 48.8 MB disk space 512 MB monthly bandwidth Full Control Panel access Config editor & Solr Admin UI No credit card required

Quick Start by CMS

DrupalUse the Opensolr Search Module for AI-powered hybrid search with facets, analytics, and autocomplete — no Search API dependency. Or use the Search API Opensolr connector for traditional integration.

WordPressUse the Opensolr Search plugin — configure your Opensolr connection details in the plugin settings.

Website / Any StackUse the Web Crawler — no code, no backend. Works with WordPress, Shopify, static HTML, anything.

Moodle / OmekaMoodle guide or Omeka-S SearchSolr module for LMS and digital archive search.

What You Get at Every Plan Level

Full Solr API access — standard Solr REST API over HTTPS

Control Panel — index management, config editor, Solr Admin UI

Security — IP access rules, HTTP authentication, SSL encryption

Backups — create, schedule, restore, and download index backups

REST APIs — automate index management, config files, security, and more

Any Solr version — from 4.x through the latest version available

Ready to try it?

Create your free account and have your first Opensolr Index running in under a minute.

Create Free Account What is Opensolr? → View Pricing

Try it live · no signup, no code

See the Web Crawler and AI Hybrid Search working in 60 seconds

Paste any website URL into the RAG in 60 Seconds sandbox. The Web Crawler fetches your pages, Opensolr generates the vector embeddings, and you get keyword + vector hybrid search plus a RAG answer on your own content — live, on a temporary index, with the keyword-only, vector-only and hybrid results shown side by side. No account, no OpenAI key, nothing to install.

Try AI Hybrid Search in 60 seconds →

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Shared, Dedicated, Resilient Cluster Solr Cloud Solutions

Shared

Shared Cluster

Dedicated

Dedicated Cluster

Your indexesOther customersReplication link

Opensolr offers four hosting tiers, each designed for a different stage of growth. Whether you're running a side project or powering enterprise search for millions of queries, there's a plan that fits.

Shared Solr

Multiple customers share the same server. Think of it like an apartment building — everyone has their own locked unit, but you share the building's resources.

Lowest cost entry point
Indexes are fully isolated — your data is private and secure
Ideal for development, testing, and normal production traffic
In rare cases, a "noisy neighbor" (e.g., heavy bot traffic on another index) may temporarily affect performance — we monitor for this and can relocate your index if needed (a few minutes of downtime to switch)

Plug and play. Create your free account, pick your plan, create your Solr index — two clicks and you're live. No setup calls, no waiting.

Shared Resilient Cluster

Multiple dedicated servers working together, but resources are still shared across customers. Think of it as two apartment buildings connected by a bridge — more room, better infrastructure, same shared model.

Load-balanced across multiple machines with replicas
Handles heavy traffic much better than a single shared instance
Bot traffic still counts toward your bandwidth, but the performance impact is significantly lower
Great for customers who need higher throughput without the cost of a fully private cluster

Plug and play. Same instant setup as Shared — register, choose a Shared Cluster plan, create your index, and you're done. No waiting, no configuration calls.

Dedicated Standalone

One machine dedicated entirely to you. Like owning your own house — no shared walls, no noisy neighbors, just your workload.

Complete resource isolation — CPU, RAM, and disk are all yours
Stable, predictable performance with zero interference from other users
More affordable than a full cluster, far more private than shared
Perfect for production workloads that need consistent response times

Tailored to your needs. Dedicated environments are sized based on your actual usage — traffic volume, index size, query complexity. Talk to us so we can design the right system for you.

Dedicated Cluster

A full cluster of multiple dedicated machines, exclusively for you. This is the enterprise tier — your own private data center with built-in redundancy.

Multiple servers (master + replicas) all working for your workloads only
Create any number of Solr indexes inside your cluster
Built-in replication, load balancing, and failover
Scalable — add more nodes as your traffic grows
Multi-region deployment available
Ideal for mission-critical applications, high-traffic platforms, and corporate-grade search

Custom-built for you. Every Dedicated Cluster is designed around your specific workload — number of indexes, query volume, redundancy requirements, region preferences. Get in touch and we'll put together the perfect setup.

Side-by-Side Comparison

	Shared	Shared Cluster	Dedicated	Dedicated Cluster
Cost	Low	Medium	Medium–High	High
Performance	Good	High	Very High	Excellent
Isolation	Data only	Data only	Full	Full
Redundancy	—	Yes	—	Yes
Best For	Dev, testing, normal traffic	High traffic on a budget	Predictable, stable workloads	Enterprise, mission-critical

Common Questions

Can I host multiple sites inside one Dedicated Cluster?

Yes. A Dedicated Cluster is your own private environment. You can create as many Solr indexes as you need inside it — one per site, one per application, or however you want to organize your data.

Can another customer's traffic affect my performance on Shared?

It's rare, but possible. We actively monitor all shared instances and will relocate your index to a quieter server if needed (a few minutes of downtime to switch hostnames). For guaranteed isolation, choose Dedicated Standalone or Dedicated Cluster.

Is there any security concern on shared plans?

No. Every Solr index is fully isolated regardless of the hosting tier. Other customers cannot access, read, or modify your data. Shared only means system resources (CPU, RAM) are shared — not your data.

What if my servers are in a different region than the Solr cluster?

The only impact is network latency, typically around 80–130ms for cross-region connections. You can easily test this during the free plan. In most cases, performance is comparable to dedicated unless you're under extremely heavy load.

Not Sure Which Plan Fits?

Start with the free plan on shared infrastructure. You can upgrade at any time, and every paid plan includes a 10-day money-back guarantee.

Create Your Free Account

No credit card required.

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Order & Upgrade Indexes, Disk Space, Bandwidth — Opensolr ...

An Opensolr plan is assembled from four resources. You buy more of the one you ran out of, not a bigger bundle, and the change is pro-rated to the day.

01 · The four resources

Indexes

Standalone Opensolr indexes, in the region you choose. Most accounts need one per application or per environment.

Clusters

A group of servers behaving as one index, with load balancing and read and write separation.

Disk space

The storage used by each of your indexes or clusters.

Bandwidth

The outgoing traffic from Opensolr to your site or app. This is what a busy search page consumes.

02 · When to upgrade

Two situations: you have outgrown the free plan, or you have run out of one of the four resources above. Running out of one does not mean you need more of the others.

03 · Worked example: out of disk space

Open your index list

Go to the Opensolr control panel and click the index you want to inspect.