Best AI Knowledge Base Software in 2026
Updated
36 AI knowledge base software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
36ranked
0free plans on this page
$8/molowest paid tier
5 Oct 2026last checked
0 of the 11 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 |
|---|---|---|---|---|---|---|---|
| 26 | TettraWeb | One bar | — | — | 1 of 6 | $8/mo | 4.9 |
| 27 | TrainualWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 4.9 |
| 28 | BloomfireWeb | One bar | — | — | 1 of 6 | — | 4.8 |
| 29 | BrainfishWeb | No signal | — | — | 1 of 6 | — | 4.8 |
| 30 | CapacityNo platforms listed | One bar | — | — | 0 of 6 | — | 4.8 |
| 31 | CustomGPT.aiWeb | One bar | — | — | 1 of 6 | $99/mo | 4.8 |
| 32 | Document360Web | No signal | — | — | 1 of 6 | — | 4.8 |
| 33 | GurubaseWeb | No signal | — | — | 1 of 6 | — | 4.8 |
| 34 | StarmindWeb | No signal | — | — | 1 of 6 | — | 4.8 |
| 35 | April FlowNo platforms listed | No signal | — | — | 0 of 6 | — | 4.7 |
| 36 | KnowliumWeb | No signal | — | — | 1 of 6 | — | 4.7 |
Compare all 11 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | AI answer mode | Source connectors |
|---|---|---|---|---|---|---|---|---|
| 26 | Tettra | 4.9 | No | $8/mo | No | 8 /user/mo | — | — |
| 27 | Trainual | 4.9 | No | — | No | — | — | — |
| 28 | Bloomfire | 4.8 | No | — | No | — | — | — |
| 29 | Brainfish | 4.8 | No | — | No | — | both | — |
| 30 | Capacity | 4.8 | No | — | No | — | — | — |
| 31 | CustomGPT.ai | 4.8 | No | $99/mo | No | — | — | — |
| 32 | Document360 | 4.8 | No | — | No | — | — | — |
| 33 | Gurubase | 4.8 | No | — | No | — | generative | — |
| 34 | Starmind | 4.8 | No | — | No | 0.6 /user/mo | both | — |
| 35 | April Flow | 4.7 | No | — | No | — | both | — |
| 36 | Knowlium | 4.7 | No | — | No | — | generative | — |