Best AI Knowledge Base Software in 2026
Updated
In short: Korra is ranked #1 of 36 as of 5 October 2026, ahead of Nuclino and ProProfs Knowledge Base. The best-ranked option with a free plan is Nuclino. The lowest first paid tier on this page is ProProfs Knowledge Base at $0.99/mo.
AI knowledge base software can help you draw on information gathered across your team’s content sources. Compare AI answer mode, supported content, and source connectors to see what material each option is listed to work with. Nuclino, ProProfs Knowledge Base, and Recall are among the entries to consider. Content sync matters when information changes, while permission controls are another point to weigh when access needs vary. Included users, free-plan availability, and paid-from pricing help clarify the access and cost details. Consider the sources your team relies on and who needs to use them as you compare these capabilities.
36 AI knowledge base software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
11 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | KorraWeb · Windows · Mac · Linux · Android · iPhone · Self-hosted · API · Extension | Three bars | — | 6 of 6 | Free | 6.7 | |
| 2 | NuclinoWeb · Windows · Mac · Linux · Android · iPhone · API | Three bars | — | 6 of 6 | Free | 6.7 | |
| 3 | ProProfs Knowledge BaseWeb · Windows · Android · iPhone · API · Extension | Three bars | — | 4 of 6 | $0.99/mo | 6.7 | |
| 4 | RecallWeb · Android · iPhone · API · Extension | Three bars | — | 3 of 6 | $10/mo | 6.5 | |
| 5 | ScribeWeb · Windows · Mac · API · Extension | Three bars | — | 3 of 6 | $1,713/mo | 6.5 | |
| 6 | DocsBot AIWeb · Self-hosted · API | Two bars | — | 1 of 6 | $49/mo | 6.4 | |
| 7 | GitBookWeb · API | Two bars | — | 1 of 6 | $65/mo | 6.4 | |
| 8 | Sana AIWeb · iPhone | Two bars | — | 2 of 6 | $30/mo | 6.4 | |
| 9 | SlabWeb · Windows · Mac | Three bars | — | 3 of 6 | $6.67/mo | 6.4 | |
| 10 | DocmostWeb · Self-hosted · API | Two bars | — | 1 of 6 | Free | 6.3 | |
| 11 | Stack InternalWeb | One bar | — | 1 of 6 | Free | 6.1 | |
| 12 | NucleusWeb · API | One bar | — | — | 1 of 6 | — | 5.3 |
| 13 | SliteWeb · Windows · Mac · Android · iPhone · API · Extension | Two bars | — | — | 5 of 6 | $10/mo | 5.3 |
| 14 | ConveyorWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 15 | GuruWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 16 | MoveworksWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 17 | ArchbeeWeb · Windows · Mac · Linux | Two bars | — | — | 4 of 6 | $80/mo | 5.1 |
| 18 | ChatInferWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 19 | EliumWeb · Android · iPhone · Self-hosted · API · Extension | Two bars | — | — | 3 of 6 | €15/mo | 5.1 |
| 20 | KnowmaxWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 21 | ShelfWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 22 | ZAQWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 23 | BuiltABotWeb | One bar | — | — | 1 of 6 | — | 4.9 |
| 24 | HelpjuiceWeb | One bar | — | — | 1 of 6 | — | 4.9 |
| 25 | KnowledgeOwlWeb | One bar | — | — | 1 of 6 | $100/mo | 4.9 |
Compare all 25 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | AI answer mode | Source connectors |
|---|---|---|---|---|---|---|---|---|
| 1 | Korra | 6.7 | Free plan | Free | Yes | — | both | 3 connectors |
| 2 | Nuclino | 6.7 | Free plan | Free | Yes | — | — | — |
| 3 | ProProfs Knowledge Base | 6.7 | Free plan | $0.99/mo | Yes | 0.99 /user/mo | — | — |
| 4 | Recall | 6.5 | Free plan | $10/mo | Yes | — | — | — |
| 5 | Scribe | 6.5 | Free plan | $1,713/mo | Yes | 13 /user/mo | — | — |
| 6 | DocsBot AI | 6.4 | Free plan | $49/mo | Yes | — | — | — |
| 7 | GitBook | 6.4 | Free plan | $65/mo | Yes | — | — | — |
| 8 | Sana AI | 6.4 | Free plan | $30/mo | Yes | — | both | — |
| 9 | Slab | 6.4 | Free plan | $6.67/mo | Yes | 6.67 /user/mo | — | — |
| 10 | Docmost | 6.3 | Free plan | — | Yes | 6 /user/mo | — | — |
| 11 | Stack Internal | 6.1 | Free plan | Free | Yes | — | — | — |
| 12 | Nucleus | 5.3 | No | — | — | — | both | — |
| 13 | Slite | 5.3 | No | $10/mo | No | 10 /user/mo | — | — |
| 14 | Conveyor | 5.2 | No | — | Yes | — | both | — |
| 15 | Guru | 5.2 | No | — | — | — | — | — |
| 16 | Moveworks | 5.2 | No | — | — | — | both | — |
| 17 | Archbee | 5.1 | No | $80/mo | No | — | — | — |
| 18 | ChatInfer | 5.1 | No | — | Yes | — | both | — |
| 19 | Elium | 5.1 | No | €15/mo | No | — | — | — |
| 20 | Knowmax | 5.1 | No | — | — | — | both | — |
| 21 | Shelf | 5.1 | No | — | — | — | both | — |
| 22 | ZAQ | 5.1 | No | — | Yes | — | generative | — |
| 23 | BuiltABot | 4.9 | No | — | No | — | both | — |
| 24 | Helpjuice | 4.9 | No | — | No | — | — | — |
| 25 | KnowledgeOwl | 4.9 | No | $100/mo | No | — | — | — |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI knowledge base software is ranked first on Freedom251?
Korra is ranked #1 of 36 with a score of 6.7. Nuclino is second and ProProfs Knowledge Base third.
How many of these have a free plan?
11 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, ProProfs Knowledge Base has the lowest first paid tier we found: $0.99/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.