Open Knowledge Maps review (2026): is it any good?
Free visual maps of a research topic from open scholarly sources
Open Knowledge Maps report card
Very good · out of 4.0 · graded Nov 13, 2026
Best for a free visual map of an unfamiliar research topic
Open Knowledge Maps turns a search into a map of the top 100 results, grouped into labelled areas, and costs nothing. It groups by titles and abstracts only, so papers outside those 100 results never show up and nothing is ranked by quality. We'd treat it as a first look at a field, not a literature search.
Who Open Knowledge Maps is for
- Fits if you are new to a field and want its themes before you read anything
- Works for librarians running a discovery workshop on open sources
Who Open Knowledge Maps is not for
- Skip it if you need every relevant paper, as each map holds only the top 100 results
- Not for you if you want papers ranked by quality, because it groups by metadata and does not rank
- Too light for a full literature search, since it never reads full texts
- Watch out: each map takes about 30 seconds because every query runs live
Why Open Knowledge Maps gets a 3.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyFree outright, and the site shows no paid tier for individual users. Category tools start at $7.92 a month for the cheaper quarter.
- AFree plan and trialEvery map is free with no plan to move up to, and the site shows no cap a normal person would hit.
- CFeaturesBuilds topic maps from BASE, PubMed and OpenAIRE records. It does that job fully, but it is a small job: the top 100 results only, metadata not full text.
- BEase of useNo store rating on record, but you type a topic and wait about 30 seconds for the map. Nothing to set up.
- CPlatforms and integrationsWeb only. BASE, PubMed, OpenAIRE and ORCID are where the records come from, and no API is listed.
What these grades rest on. Graded from this listing, whose facts were read from Open Knowledge Maps's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
Make Open Knowledge Maps? Put this grade on your site
Paste this where you want the badge. It links here and follows the grade if it changes. About badges
<a href="https://toolgpa.com/tools/open-knowledge-maps#review"><img src="https://toolgpa.com/badge/open-knowledge-maps.svg" alt="Open Knowledge Maps: 3.0 GPA on ToolGPA" width="196" height="56"></a>Where Open Knowledge Maps stands among AI research tools
Open Knowledge Maps's GPA of 3.0 is higher than 63 of the 69 other AI research tools we grade, and level with 1.
It stands best on free plan and trial (A, above 61 of 69) and worst on platforms and integrations (C, above 0).
Open Knowledge Maps has no paid plan.
On features, ease of use and platforms it scores 2.3 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 70 AI research tools we grade, cut by the letter each got. Open Knowledge Maps’s own letter is outlined.
- AValue for moneyAbove 58 of 69, level with 11
- AFree plan and trialAbove 61 of 69, level with 8
- CFeaturesAbove 1 of 69, level with 51
- BEase of useAbove 42 of 69, level with 27
- CPlatforms and integrationsAbove 0 of 69, level with 27
Price against what you get
Each dot is one of 59 AI research tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Open Knowledge Maps, or make your own?
Keep it
Open Knowledge Maps is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces. It is one of the better ones too: its GPA of 3.0 is higher than 63 of the 69 other AI research tools we grade.
What you could make
- Mind mapping: an app builder makes this well.
What you could not
- A library of papers and sources to search.
- AI features, unless you pay a model provider for each request yourself.
What this rests on. Open Knowledge Maps’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Open Knowledge Maps?
Open Knowledge Maps is a free discovery tool from a charitable non-profit. You type a topic and it builds an interactive map that groups the top results into labeled areas, so a newcomer can see the themes of a field before reading. It searches open indexes such as BASE and PubMed, and the maps are based on metadata only.
Worth knowing
- Each map uses only the top 100 results, so important papers can be missing from it.
- Maps take around 30 seconds to build, because each query is processed live.
- Grouping uses metadata, not full text, and it does not rank papers by quality.
Key features
- Topic maps
- A search produces an interactive map of the top 100 results, grouped by topic similarity into labeled areas you can open.
- Open data sources
- Maps are built from BASE, PubMed and OpenAIRE records, with BASE covering more than 400 million outputs from over 11,000 sources.
- Open access emphasis
- Open access resources are highlighted, and most can be read inside the interface or are one click from the full text.
- Metadata-only grouping
- Clusters come from titles, abstracts, authors, journals and subject keywords, not from reading full texts; the site says it has no hallucinations.
- Custom services for organizations
- Institutions can embed Open Knowledge Maps' discovery tools in their own systems through a separate offering.
Open Knowledge Maps pricing
As of Nov 13, 2026, Open Knowledge Maps is free to use.
- Starts at
- Free
- Free plan
- None
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | Create knowledge maps from the search page; the site shows no paid tier for individual users. |
Read from openknowledgemaps.org on Nov 13, 2026. Prices change, so confirm with Open Knowledge Maps before you buy.
Works with
- BASE
- PubMed
- OpenAIRE
- ORCID
Open Knowledge Maps alternatives
- Open Knowledge Maps vs Connected Papers
Free plan · from $6/mo
- Open Knowledge Maps vs Litmaps
Free plan · from $10/mo
- Open Knowledge Maps vs ResearchRabbit
Free plan · from $10/mo
Common questions
Does Open Knowledge Maps have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Open Knowledge Maps is listed for Web.
Does Open Knowledge Maps have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Open Knowledge Maps is listed for Web.
Is Open Knowledge Maps open source?
Open Knowledge Maps is not described as open source on its own site, as read on Nov 13, 2026.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.