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Head-to-head · AI Knowledge Base Software

Stack Internal vs Elium

  • Updated Nov 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Stack Internal #1 in AI Knowledge Base Software 9.3/10 Free plan Free plan Visit Stack Internal
Elium #7 in AI Knowledge Base Software 8.6/10 Paid Visit Elium

Stack Internal leads on 1 check, Elium on 0, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreStack Internal · 9.3/10
  • Free planonly Stack Internal

Stack Internal scores higher on our rubric for ai knowledge base software: 9.3 against 8.6 out of 10; our editors rank them #1 and #7.

Stack Internal offers free plan; Elium doesn't.

Stack Internal is the better fit for teams needing free governed Q&A. Elium is the better fit for organizations wanting affordable governed knowledge.

  • Stack Internal fits best

    Teams needing free governed Q&A

  • Elium fits best

    Organizations wanting affordable governed knowledge

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Side by side

Feature Stack Internal 9.3/10 Visit ↗ Elium 8.6/10 Visit ↗
At a glance
Editor score 9.3 8.6
Ranking #1 in AI Knowledge Base Software #7 in AI Knowledge Base Software
Best for Teams needing free governed Q&A Organizations wanting affordable governed knowledge
Pricing model Free plan + paid Paid
Starting price — €15/user/mo
Free plan ✓ (best) —
Free trial — —
Deployment Cloud Cloud, Self-hosted
Platforms Web Web, iOS, Android, Chrome extension
Support Docs Email, Live chat, Phone, Docs
Compliance SOC 2, ISO 27001, GDPR, SSO/SAML ISO 27001, GDPR, SSO/SAML, 2FA
Integrations 10+ integrations 65+ integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Specs
AI answer mode Not checked yet Not checked yet
Source connectors Not checked yet Not checked yet
Permission controls Not checked yet Not checked yet
Content sync Not checked yet Not checked yet
Supported content Not checked yet Not checked yet
Included users Not checked yet Not checked yet
Our review
Pros
  • Combines AI chat with provenance, authorship and conflict signals
  • Permission-aware scopes, role-based access and audit trails
  • Connects Google Docs, Slack, Teams, Jira, GitHub and Okta
  • AI answers cite the underlying knowledge sources
  • Lifecycle controls cover ownership, validation, versioning and retirement
  • Integrates with Microsoft 365, Slack, Google Drive and Salesforce
Cons
  • Paid pricing follows a contact-sales model
  • Positioning is centered on engineering teams and organizational knowledge
  • Cloud is the listed deployment model
  • There is no free plan
  • The €15 Team price is tied to annual billing
  • Private-cloud and on-premise deployment are Enterprise features
Our verdict

Stack Internal, formerly Stack Overflow for Teams, is an enterprise knowledge platform for engineering teams. It ingests information from connected workplace tools, organizes it into reusable knowledge, and delivers answers through AI…

Read the review →

Elium is a governed knowledge management platform for organizations that need a maintained source of truth for policies, procedures, playbooks and other internal content. Teams can create, organize, validate, version and retire knowledge,…

Read the review →
  1. Stack InternalAI Knowledge Base Software 9.3Free plan
  2. EliumAI Knowledge Base Software 8.6Paid

Strengths and trade-offs

  • Stack Internal — where it wins

    • Combines AI chat with provenance, authorship and conflict signals
    • Permission-aware scopes, role-based access and audit trails
    • Connects Google Docs, Slack, Teams, Jira, GitHub and Okta

    Where it doesn't

    • Paid pricing follows a contact-sales model
    • Positioning is centered on engineering teams and organizational knowledge
    • Cloud is the listed deployment model

  • Elium — where it wins

    • AI answers cite the underlying knowledge sources
    • Lifecycle controls cover ownership, validation, versioning and retirement
    • Integrates with Microsoft 365, Slack, Google Drive and Salesforce

    Where it doesn't

    • There is no free plan
    • The €15 Team price is tied to annual billing
    • Private-cloud and on-premise deployment are Enterprise features

More comparisons

All AI knowledge base software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated · How we research and update