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Chatbase vs Knowster

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Cheaper paid plan
Chatbase — $32/mo vs $39/mo for Knowster
Free plan
Only Knowster (Chatbase has paid plans only)
Public API
Chatbase has one; not confirmed by us for Knowster
Higher Trust score
Chatbase — 86 vs 77 for Knowster
Best fit
Chatbase: SaaS and ecommerce teams deflecting repeat questions from existing documentation · Knowster: Small sites that want a Q&A widget without writing a separate knowledge base

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

Side by side

FactChatbaseKnowster
CategoryCustom GPTs & Bot BuildersAI Support Chatbots
Pricing modelPaidFreemium
Starts at$32/mo$39/mo
Public APIYesNot confirmed
Trust score86 / 10077 / 100
PlatformsWeb, APIWeb
CompanyChatbaseKnowster
Launched2023—
Last verifiedOct 15, 2026Oct 15, 2026

What our research says

Chatbase

The fastest route from a folder of help docs to a working support widget, and priced accordingly once real traffic arrives. Credits are the whole story: 700 messages a month on Hobby ($40, or $32 billed yearly) is a small site's volume, and the plans that carry real traffic cost $150 and $500 a month. There is no free plan to fall back on, so budget from expected conversations, not from the feature grid.

Pros

  • Crawl-and-embed setup produces a usable widget in an afternoon with no retrieval plumbing to write
  • Actions and human handoff mean it degrades into a ticket rather than a dead end
  • Every paid plan carries a 7-day trial, and the yearly toggle takes 20% off

Cons

  • The free plan is gone, so evaluation is limited to a 7-day trial
  • API access is gated to Standard at $150/month ($120 billed yearly), several times the entry price
  • Overage at $40 per 1,000 credits is steep next to the in-plan rate on Pro
  • Each plan includes a single agent; more cost $300 per agent a year, and removing branding $1,188 a year

Knowster

A straightforward pick for a small business that wants a support widget trained on pages it already has, without a lengthy setup. The catch is it's a one-developer product with no disclosed company behind it, so there's no visible track record for support or uptime guarantees.

Pros

  • One-line install with automatic re-training when pages change
  • Answers in the visitor's language regardless of source content language
  • Free tier with no credit card required
  • Lead capture built into the chat flow

Cons

  • Built and run by a single developer with no company entity disclosed
  • White-labeling is locked behind paid tiers
  • No API or integrations beyond the chat widget itself

Which one fits

Choose Chatbase if you need

  • SaaS and ecommerce teams deflecting repeat questions from existing documentation
  • Solo founders who need a support presence before they can hire one
  • Agencies standing up a branded bot per client, provided each client funds its own agent slot

Choose Knowster if you need

  • Small sites that want a Q&A widget without writing a separate knowledge base
  • Businesses that get questions in multiple languages from one set of source pages

Chatbase vs Knowster: the questions people ask

Is Chatbase cheaper than Knowster?

On published entry prices, Chatbase starts lower — $32/mo against $39/mo for Knowster. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Does Chatbase or Knowster have a free tier?

Knowster has a free tier; Chatbase has paid plans only.

Which has a public API, Chatbase or Knowster?

Chatbase ships a public API, as of our last verification. A public API for Knowster is not confirmed by us — check its developer docs before you plan an integration.

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