What should I use for a docs portal with AI search?

If you want a docs portal with AI search, the best choice depends on whether you want something fast to launch, highly customizable, or enterprise-grade.

Good options by use case

1. Docusaurus + AI search plugin

Best if you want:

• open-source
• strong docs structure
• easy markdown workflow
• low cost

Add-ons for AI search:

• Algolia AI/semantic search
• custom embeddings + vector DB
• third-party search widgets

Best for: developer docs, product docs, OSS projects.

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2. Mintlify

Best if you want:

• polished docs portal out of the box
• built-in search and AI features
• strong DX and quick setup
• modern API docs look

Best for: startups, API/documentation sites, teams that want speed over customization.

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3. ReadMe

Best if you want:

• hosted docs portal
• API reference + guides
• interactive docs
• good search and analytics

Best for: API-first products and customer-facing docs.

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4. GitBook

Best if you want:

• simple collaborative docs
• hosted SaaS
• decent search
• easy publishing

AI search may require integrating external AI features depending on plan/capabilities.

Best for: internal docs, lighter-weight public docs.

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5. Docs portal on Next.js / custom site + AI search

Best if you want:

• full control over UX
• custom AI assistant
• custom retrieval and citations
• integration with your product/auth system

Typical stack:

• Next.js
• markdown/MDX or CMS
• vector DB: Pinecone, Weaviate, pgvector, Supabase Vector, or OpenSearch
• LLM/search layer: OpenAI, Anthropic, Azure OpenAI
• search orchestration: LlamaIndex / LangChain / custom RAG
• optional keyword search: Algolia / Meilisearch

Best for: enterprise docs, internal knowledge bases, complex permissioning.

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My practical recommendation

• If you want fastest good-looking launch: Mintlify
• If you want open-source and flexible: Docusaurus + AI search
• If you want customer-facing API docs with analytics: ReadMe
• If you want full control and custom AI experience: Next.js custom portal

Important thing to consider for AI search

AI search works best when you also have:

• good chunking of docs
• strong metadata
• citations/source links
• access control filtering
• hybrid search: keyword + semantic + reranking

If you tell me these 4 things, I can recommend a specific stack:

1. Public docs or internal docs?
2. Markdown-based or CMS-based?
3. Need authentication/permissioning?
4. Want hosted SaaS or self-hosted/open-source?