Research and knowledge tools
All 11 research and knowledge tools in the library, with what each one is for and the price figure already published on that tool’s own page. Where a page does not state a number, the row says so.
11 tools in this category, listed alphabetically. Every price, free-plan limit and check date below is the vendor-checked fact already published on that tool’s own page on this site.
What to check before you choose
Read the free-plan column before the price. Some of these tools search papers or the web, and others answer from files you upload. If a cell does not show a dollar figure, that tool’s page did not have a readable price table, and the link on the row goes to the vendor.
Compare all 11 research and knowledge tools
Every cell is copied, not calculated. Entry price is the starting figure that tool’s page publishes under “Paid plans from”; where a tool begins on a free tier that figure is $0, which is what its own page shows, and the Free plan? column says which kind of free access that is. Where a page publishes no starting figure, the cell repeats the cheapest plan it does list, word for word, or says the vendor publishes no self-serve price at all. Hard limit repeats that page’s “On the record” line, which is what the vendor states about the free tier. Price checked is the same date the tool page carries.
| Tool | Best for | Entry price | Free plan? | Hard limit | Price checked |
|---|---|---|---|---|---|
| AskYourPDF | People who want a site chatbot or PDF chat and can start with a few documents | $0 | Ongoing free plan | AskYourPDF’s pricing page lists Free at $0, including an AI agent trained on up to 5 documents or websites and 3 visitor conversations a day. | |
| BlackRock AI Labs | People who want to try BlackRock AI Labs from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Consensus | People who want to try Consensus from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Coursera | People who want a structured course from a university or a company and can start by joining free | $0 | Ongoing free plan | Coursera’s homepage says Join for Free and also offers “a year of new skills for $239/year.” | |
| DorkGPT | People who want to try DorkGPT from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Glasp | People who want to try Glasp from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| GPT‑Rosalind | People who want to try GPT‑Rosalind from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Liner | People who want to try Liner from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Mem | People who want to try Mem from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Microsoft Bing | People who want to try Microsoft Bing from the official site before they pay | See the official site for current plans | See official pricing | See the official pricing page for current plans. A complete price table was not readable on November 11, 2026, so this page does not state a price. | |
| Perplexity | Fast, sourced research | $17/mo billed yearly | Ongoing free plan | Free plan. |
How we pick
Every row above copies a figure that is already on that tool’s own page on this site, and each of those pages links the vendor’s own pricing page and the date we read it. Where a vendor publishes no limit, or no price, the row says so rather than filling the gap. The order is alphabetical by tool name, not a ranking. Nothing here is bought: no vendor pays for a row, a position or a mention, and where a link to a vendor is an affiliate link it is marked on the tool page, not here.
Frequently asked questions
What is on this page?
This page lists every research and knowledge tool in the library, with the best-for line, entry price, free-plan label, and limit already published on each tool’s own page.
How is the list ordered?
The list is alphabetical by tool name. It is not a ranking, and no vendor pays for a row.
Where do the figures come from?
Every price and limit is copied from that tool’s page on this site, which links the vendor’s pricing page and the date it was checked.