Free and open first
Best Knowledge Bots in 2026
Knowledge bots answer questions using selected knowledge sources. Use this list to compare tools for personal, team, support, and product needs across web, API, mobile, browser extension, and self-hosted options.
- 21 apps
- Research read 10 Oct 2026
- How the order is worked out
- 1
Onyx
Free plan Open source APIExtensionLinux+4 - 2
Amazon Q
Free plan AndroidAPIExtension+5Choose Amazon Q if its developer allowances or business response and consumption options match your work.
- 3
- 4
DocsBot AI
by DocsBot AIFree plan APISelf-hostedWebDocsBot AI combines source-linked answers with configured support actions and several deployment options.
- 5
- 6
Dust
Free plan APIExtensionWebDust combines agent creation, company connectors, collaboration, and scheduled workflows, with a free tier and paid annual-billed plans.
- 7
Sana AI
Free plan iPhoneWebSana Agents combines organizational knowledge access with task automation, integrations, and meeting recordings.
- 8
HubSpot Live Chat
Free plan AndroidiPhoneWeb - 9
CustomGPT.ai
Free trial APIWebCustomGPT.ai combines broad content ingestion, cited answers, and multiple deployment channels for business agents.
- 10
- 11
Kapa.ai
Free trial APISelf-hostedWebKapa.ai brings knowledge ingestion, cited retrieval, multiple deployment formats, and analytics into one offering.
- 12
- 13
- 14
Inkeep
Free plan Web - 15
SiteGPT
Free trial APIiPhoneWebSiteGPT provides broad training-source support, multilingual conversations, handoff, lead capture, and analytics.
- 16
Forethought Solve
Paid APIWebChoose Solve if your support team needs an AI agent across multiple channels, with workflow actions and contextual human handoffs.
- 17
Moveworks
Paid AndroidAPIExtension+2Moveworks brings permission-aware knowledge search and cross-system task automation into one enterprise platform. Organizations need to request a quote, and the company offers a personalized demo.
- 18
Decagon
Paid APIWebChoose Decagon if your support operation needs its combination of five channels, workflow actions, human handoff, multilingual support, voice support, and API access.
- 19
Sierra
Paid WebSierra combines agent building, multi-channel support, integrations, and conversation analytics for customer experience teams.
- 20
Aisera AI Service Desk
Paid Web - 21
Zendesk AI Agents
Paid WebPick Zendesk AI Agents if your support operation spans several channels and needs automation with human escalation. Look elsewhere if you require a free plan or a platform beyond the web.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
Check what a free plan includes, whether a trial is available, and the paid starting price. If you need to read or change code, review the open-source licence. Compare knowledge sources, citation support, source limits, languages, and access controls before choosing.
Questions
Which knowledge bots have a free plan?
Entries including Amazon Q, Dust, HubSpot Live Chat, and Inkeep show a free plan. Check the current limits and terms before choosing.
Are free trials available?
Free trials are offered by tools on this list. Amazon Q shows a 60-day trial, whereas CustomGPT.ai shows a 7-day trial.
What can I compare between knowledge bots?
You can compare free-plan details, starting paid price, knowledge sources, answer citations, deployment, source limits, supported languages, and knowledge access controls.
Which platforms do these tools support?
The list includes tools running on web, API, iOS, Android, browser extension, and self-hosted platforms.
Are any knowledge bots open source?
If you need open-source code, check whether the specific tool offers it and review the licence.
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