Licensing

Two separate things: the content, which is openly licensed and always will be, and the service that delivers it, which has a free tier and paid plans for businesses at volume.

The content

Open, and we cannot make it otherwise.

Article text is derived from English Wikipedia under CC BY-SA 4.0. Structured facts are derived from Wikidata under CC0.

Our parsed, structured rendering of Wikipedia text is an adaptation of BY-SA material, so it carries BY-SA forward. That has two consequences we want to be straight about:

  • Anyone — including a company, including commercially — may use, redistribute and adapt the content we return, provided they attribute it and share adaptations alike.
  • We are not permitted to add restrictions on top. CC BY-SA 4.0 §2(a)(5)(B) prohibits imposing additional terms that limit what a recipient may do with the licensed material, and we do not attempt to.

So there is no "content licence" to buy. If a vendor tells you that you must pay them for the right to use Wikipedia-derived text, they are selling you something they do not own. What you can pay us for is the service — the ingest pipeline, the index, the uptime and the support behind it.

Wikidata-derived facts are CC0 and carry no obligations at all. Attribution is appreciated but not required.

What is ours

The parts we do license.

Separately from the source content, these are our own work and are licensed to you under the plan you are on:

  • The ingest and parsing pipeline, the Worker, and the API surface.
  • The search index and its ranking model, including the pageview weighting.
  • The alias resolution index built from redirects and Wikidata labels.
  • Wikexa's name, wordmark and site design.
Plans

Free where it should be. Paid where it costs us.

The free tier is genuinely free and not a trial. Business plans exist because sustained, high-volume traffic has a real infrastructure cost and because companies want guarantees a free service cannot make.

Free
$0

Individuals, students, researchers, hobby projects and open-source software.

  • All four tools, full corpus
  • No key, no account, no signup
  • Fair-use rate limits
  • Best effort, no SLA
Business
from $29/mo

Companies embedding Wikexa in a product or running it at sustained volume.

  • Raised rate limits
  • Uptime commitment
  • Email support
  • Usage reporting
Enterprise
Custom

High throughput, procurement requirements, or a deployment of your own.

  • Negotiated throughput
  • Contractual SLA
  • Bulk export / private instance
  • Invoicing and DPA
Not sure
Ask

If you are a small team or a non-profit and the plans do not fit, tell us what you are building.

  • We would rather you use it
  • Discounts for non-profits
  • Get in touch

Self-serve billing is not live yet. The service is currently free for everyone while the corpus finishes building. If you are planning production use, contact us and we will agree terms before there is ever a bill.

Attribution

How to credit the source.

Every response includes source_url and license. If you display or republish article text, carry them through. A line like this satisfies BY-SA:

Source: Wikipedia, "Ada Lovelace" — CC BY-SA 4.0
https://en.wikipedia.org/wiki/Ada_Lovelace

If you publish an adaptation of that text, license your adaptation under CC BY-SA 4.0 as well. Facts alone — a date of birth, a population figure — are not copyrightable and carry no obligation.