Lesson 898 of 1596
AI Knowledge Base Platforms 2026: Glean vs. Notion AI vs. Custom RAG
When to buy an enterprise AI search product vs. build your own RAG.
Creators · Tools Literacy · ~7 min read
The premise
Building RAG well is harder than vendors admit; buying it limits how much you can tune retrieval — pick by your engineering capacity.
What AI does well here
- Index across SaaS sources (Slack, Drive, Confluence, GitHub) out of the box
- Provide answer attribution back to source documents
- Handle permissions inheritance from source systems
- Track query analytics by team
What AI cannot do
- Match a tuned in-house RAG on your specific domain accuracy
- Index your weirdest data sources without a custom connector
- Avoid the 'wrong answer with high confidence' problem entirely
Key terms in this lesson
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