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Customer Support · head to head

Document360 vs Plain

Document360 logo

Document360

Customer Support

Self-service knowledge base software for product documentation

From
On request
Rated
-
Full reviewWebsite
Plain logo

Plain

Customer Support

AI support infrastructure built for B2B teams

From
$35/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Document360 no published flat-rate pricing makes it hard to compare costs upfront against competitors.; Plain foundation plan limited to 2,000 credits per month may be restrictive for high-volume teams
  • They diverge on capability: Document360 covers Category Manager, Plain covers Multi-channel consolidation.

Where they differ

Only the attributes on which Document360 and Plain actually diverge.

Attributes where Document360 and Plain differ
AttributeDocument360Plain
Starting priceOn request$35/month
Pricing modelquoteTiered pricing per seat with credit system
PlatformswebWeb, API

Identical on both: free tier (No), user rating (Not yet rated), category (Customer Support).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Document360

  • Category Manager
  • Eddy AI
  • Article Revision History
  • SSO & Role-Based Access
  • Analytics
  • Multi-language Support
  • API Documentation Tools

Only in Plain

  • Multi-channel consolidation
  • AI agents
  • Workflow automation
  • Sidekick assistant
  • Insights engine
  • Linear and Jira integration
  • Help Center and Knowledge Base
  • API-first extensibility

What people use each for

The jobs each tool is most often brought in to do.

Document360

  • Product and API documentationnot Plain
  • Internal knowledge managementnot Plain
  • Customer self-service supportnot Plain
  • Multi-language documentation portalsnot Plain

Plain

  • Consolidating support from multiple channels into one inboxnot Document360
  • Automating support workflows with AI agentsnot Document360
  • Extracting insights and trends from customer conversationsnot Document360
  • Building custom support solutions with API accessnot Document360
  • Implementing AI-assisted customer support at scalenot Document360

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Document360

  • No published flat-rate pricing makes it hard to compare costs upfront against competitors.
  • Requires a sales quote process rather than instant self-service signup for paid plans.
  • Advanced AI features are usage-metered and may require additional purchases.
  • Smaller teams may find the enterprise-oriented feature set more complex than needed.

Plain

  • Foundation plan limited to 2,000 credits per month may be restrictive for high-volume teams
  • Pricing increases significantly from Foundation to Horizon ($35 to $299 per month)
  • No published pricing for Frontier (custom) plan
  • Additional seat costs ($99 per seat) add up for larger teams
  • Credit-based system requires monitoring usage to avoid overages

Pricing, plan by plan

Document360

On request
  • Custom$undefined/month
    • Team accounts
    • Workspaces
    • Languages

Plain

$35/month
  • Foundation$35/month
    • 2,000 credits per month
    • Slack and email channels
    • Ari AI agent
  • Horizon$299/month
    • 15,000 credits per month
    • All Foundation features
    • Microsoft Teams integration
  • Frontier$null/custom
    • Custom credit allowance
    • All Horizon features
    • Discord channels

Which should you pick?

Choose Document360 if

  • You need category manager.
  • You work on web.
  • You also want eddy ai.
Document360 review

Choose Plain if

  • You need multi-channel consolidation.
  • You work on Web, API.
  • You also want ai agents.
Plain review

Questions people ask

Is Document360 or Plain better?
Neither clearly leads. Document360 starts at On request and Plain at $35/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Document360 or Plain?
Document360 starts at On request and Plain at $35/month.
Does Document360 or Plain run on more platforms?
Document360 runs on web. Plain runs on Web, API.
What is Document360 best used for?
Document360 is most often used for product and api documentation, internal knowledge management, customer self-service support, multi-language documentation portals. Of those, product and api documentation and internal knowledge management are not what Plain is typically brought in for.
What can Document360 do that Plain cannot?
Document360 covers Category Manager, Eddy AI, Article Revision History, SSO & Role-Based Access. Plain covers Multi-channel consolidation, AI agents, Workflow automation, Sidekick assistant.

Answered from the vendors’ own pages

Document360: How is Document360 pricing determined?

Pricing is customized rather than tiered flat-rate, based on team accounts, workspaces, languages, SSO/security needs, knowledge base privacy model, and AI Suite usage.

Source
Plain: What is included in the Foundation plan?

The Foundation plan ($35/month per seat) includes 2,000 credits per month, support for Slack and email, Ari AI agent, Linear and Jira integrations, and Help Center access. Up to 5 seats are included.

Source
Document360: Is there a free trial?

Yes, Document360 offers a 14-day free trial with full feature access and no credit card required.

Source
Plain: Can I use Plain with Microsoft Teams?

Yes, Microsoft Teams integration is available on the Horizon plan ($299/month) and higher.

Source
Document360: What compliance and security features are included?

All plans include SOC 2 Type II compliance, SSL encryption, and security features such as roles, permissions, and SSO.

Source
Plain: Is there a free trial for Plain?

Yes, Plain offers a 7-day free trial with no credit card required. You can also get 50% discount through their startup program.

Source
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