Question Base vs Stack Internal (2026): which should you pick?

Pick Question Base if

• Fits if your team asks the same questions in Slack all day and your docs are already in Confluence, Drive or Notion
• Works for departments that can commit to a yearly plan

Look elsewhere if

• Skip it if you want a free plan or a self-serve trial, as there is neither
• Pricey if you are one person or a small team, because Annual Pro starts at $6,000 a year
• Not for you if you don't use Slack, since that is where it works
• Watch out: the proof of concept is a 2-month commitment, and HIPAA and AWS deployment need Enterprise+

Pick Stack Internal if

• Fits if your AI coding agents should read checked company knowledge instead of guessing
• Works for teams whose answers get buried in Slack or Microsoft Teams threads

Look elsewhere if

• Skip it if you want to see a price before talking to sales, as Organization is quote only
• Tight if you're more than 3 people and staying free, because Starter stops there, with 1,000 credits a month
• Not for you if you dislike metered use: a search or answer costs 1 credit, an update 3, and unused ones don't roll over
• Watch out: Starter has no SSO, audit logs or usage insights, and it captures from 4 connectors only
• Watch out: connecting a Stack Overflow enterprise Q&A instance needs a separate Community Enterprise plan, and it's web only

Question Base

• It works inside Slack; the price page shows no self-serve plan or free tier.
• Every plan is booked through a demo or sales, with a $6,000 yearly minimum for Annual Pro.
• The pricing page states the proof of concept is a 2-month commitment.
• HIPAA compliance and AWS deployment are Enterprise+ only.

Stack Internal

• Usage is metered in Flow Credits: a search or answer uses 1 credit and an update uses 3. Credits reset each usage period and unused ones do not roll over.
• The free Starter plan allows 3 collaborators and 1,000 credits a month, and leaves out SSO, audit logs and health and usage insights.
• The Organization plan has no published price: it is quoted by sales according to the number of credits needed.
• Connecting a Stack Overflow enterprise Q&A instance requires a Stack Internal Community Enterprise plan.

Question Base

Answers in Slack

Detects questions in channels and answers from connected documentation, without needing an @mention.

Doc connections

Reads Confluence spaces and pages, Google Drive files and Notion pages and databases.

Saves new knowledge

Summarizes answers and decisions shared in Slack so they can be saved to docs.

FAQ from answers

Creates an FAQ from questions answered in Slack.

Analytics and security

Annual Pro adds performance analytics; the pricing page cites SOC 2 Type II security.

Stack Internal

Automatic capture

Connectors for Slack, Microsoft Teams, Google Docs and Stack Internal Community, plus a custom ingestion API, pull content in and break it into reusable units of knowledge.

Trust engine and confidence labels

Answers carry reviewer, recency and corroboration labels, and conflicting information is flagged, so a reader can tell when knowledge is reliable or needs validating.

Expert validation

Subject-matter experts are detected automatically and can also be managed by hand. Critical gaps trigger a validation workflow routed to them through Slack.

Scopes and permissions

Knowledge is organized into role-based Scopes so that people, teams and AI agents reach only what they should. Custom roles come with the Organization plan.

Delivery to people and AI agents

A chat interface, a REST API and an MCP server bring validated knowledge to people and to assistants and coding agents such as Claude and Cursor.

Q&A, Articles and Collections

The Community features keep Stack Overflow-style Q&A, long-form Articles, custom tags and curated Collections of related content.

Question Base

• Proof of Concept$1,000

  for 2 months, paid once

  Hands-on implementation, ROI calculation, 10,000 pages across integrations. Typical scope is a single channel.

• Annual Pro$6,000

  per year and up, at $5 per user / month, billed annually

  One team or department, 200 pages per seat of integrated data, unlimited questions and channels, performance analytics. Booked through a demo.

• Enterprise+$20,000

  per year and up, at $15 per user / month, billed annually

  Custom source integrations, deployment in your AWS, white-labeling, multi-workspace Slack, HIPAA compliance as stated. Sold through sales.

Stack Internal

• StarterFree

  A workspace for up to 3 collaborators with 1,000 credits a month, 4 connectors, unlimited ingestion, the trust engine and standard permissions.

• OrganizationCustom

  Unlimited collaborators and a customized monthly credit allowance, plus SSO, custom roles for people and AI agents, and a usage dashboard.