No. 12 of 36 ·AI Knowledge Base Software

Nucleus

Web · API

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Freedom report

One barScore 5.3

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Nucleus is ranked #12 of 36 in AI knowledge base software on Freedom251. It runs on API, Web.

Compared on AI knowledge base software

AI answer mode: both
Permission controls: role_based
Supported content: documents_apps_and_web

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The record

Product: Nucleus describes itself as a knowledge infrastructure layer that lets users add information once and make it available across AI tools.
Knowledge sources: It supports ingesting PDFs, Gmail, Google Drive, and web URLs into a searchable knowledge base.
Search and graph: The knowledge base offers hybrid semantic and keyword search, entity extraction, and a knowledge graph built with Neo4j.
Grounded answers: Nucleus says its document chat answers are grounded in source documents and include citations.
Verification: COVE checks factual claims against a knowledge base and labels them verified, contradicted, or unverifiable, with source attribution.
AI integrations: Nucleus says MCP-compatible AI tools including Claude, ChatGPT, Gemini, and Cursor can access its knowledge base through OAuth connectors.
Developer access: The REST API provides access to verification, knowledge-base search, and document management, with API keys that can have read, write, or admin access.
Access controls: The knowledge base page lists workspace-level, role-based permissions and document version tracking with a full audit trail.
Company security: The terms list SOC 2 Type I and II, ISO 27001:2022, ISO/IEC 42001:2023, and configurable HIPAA support with a BAA for eligible services.
Data security: The terms specify AES-256 encryption at rest, TLS 1.3 in transit with TLS 1.2 minimum, and role-based access controls.
Beta limitations: The terms say beta services are provided as-is without warranties, excluded from SLA commitments, and may retain beta data for up to 90 days unless ZDR is elected.
Support: For Enterprise, the terms list response targets of 1 hour for critical, 4 hours for high, 24 hours for medium, and 72 hours for low priority issues.
Intended users: Nucleus presents use cases for legal, medical, strategic intelligence, venture capital, and financial services teams.
Free access: The homepage says “Free to start” and invites visitors to join the beta; it does not give a price or plan limits there.

Where it ranks on Freedom251

Best AI Knowledge Base Software in 2026#12 of 36

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Sources

nucleus.ae· checked 4 Oct 2026
nucleus.ae/features/knowledge-base· checked 4 Oct 2026
nucleus.ae/features/cove· checked 4 Oct 2026
nucleus.ae/features/mcp-chat· checked 4 Oct 2026
nucleus.ae/features/api· checked 4 Oct 2026
nucleus.ae/terms· checked 4 Oct 2026
nucleus.ae/usecase· checked 4 Oct 2026