# Open Knowledge Maps review (2026): is it any good? > Free visual maps of a research topic from open scholarly sources Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. 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. - **Category:** AI Research Tools - **Made by:** Open Knowledge Maps - **Website:** https://openknowledgemaps.org - **Runs on:** Web - **Who should skip it:** Skip it if you need every relevant paper, as each map holds only the top 100 results. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, Open Knowledge Maps is free to use. - **Pricing model:** 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 https://openknowledgemaps.org/ on Nov 13, 2026. Prices change, so confirm with Open Knowledge Maps before buying. ## 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. ## Good for - Students entering an unfamiliar research field - Librarians running discovery workshops - Anyone who wants a free overview before a literature search ## 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. ## ToolGPA grades **GPA: 3.0 out of 4**, graded Nov 13, 2026. 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. - **Value for money: A.** Free outright, and the site shows no paid tier for individual users. Category tools start at $7.92 a month for the cheaper quarter. - **Free plan and trial: A.** Every map is free with no plan to move up to, and the site shows no cap a normal person would hit. - **Features: C.** Builds 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. - **Ease of use: B.** No store rating on record, but you type a topic and wait about 30 seconds for the map. Nothing to set up. - **Platforms and integrations: C.** Web only. BASE, PubMed, OpenAIRE and ORCID are where the records come from, and no API is listed. These are ToolGPA's own grades. 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. ## Where it 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. The category's chart of price against score: https://toolgpa.com/charts/ai-research ## Keep it, 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. - You could make: Mind mapping: an app builder makes this well. - You could not: A library of papers and sources to search. - You could not: AI features, unless you pay a model provider for each request yourself. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with BASE, PubMed, OpenAIRE, ORCID **Tags:** Research, AI features, Mind mapping ## Alternatives - [Connected Papers](https://toolgpa.com/tools/connected-papers): Visual graphs of similar academic papers for literature search. [Compare](https://toolgpa.com/compare/connected-papers-vs-open-knowledge-maps) - [Litmaps](https://toolgpa.com/tools/litmaps): Literature review tool that maps papers by their citations. [Compare](https://toolgpa.com/compare/litmaps-vs-open-knowledge-maps) - [ResearchRabbit](https://toolgpa.com/tools/researchrabbit): Literature discovery tool that maps how papers connect. [Compare](https://toolgpa.com/compare/open-knowledge-maps-vs-researchrabbit) - [Semantic Scholar](https://toolgpa.com/tools/semantic-scholar): Free AI-powered search engine for scientific literature. [Compare](https://toolgpa.com/compare/open-knowledge-maps-vs-semantic-scholar) - [CORE](https://toolgpa.com/tools/core-research): Open access research search backed by a free API. [Compare](https://toolgpa.com/compare/core-research-vs-open-knowledge-maps) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://openknowledgemaps.org/ - https://openknowledgemaps.org/about - https://openknowledgemaps.org/faq Page: https://toolgpa.com/tools/open-knowledge-maps Listed by ToolGPA (toolgpa.com).