Start free. Pay only for smarter answers.
Three plans for the AI Assistant in your Reverb 2.0 published help. Every plan falls back to the free model when paid usage runs out — never a surprise bill, and your Assistant keeps answering within fair-use limits.
Three plans, one free model.
Build and test unlimited Assistants on every plan. Budgets, spend caps, and auto top-up are yours on every plan. What the plans change is how many Assistants can be live, how much AI usage and Knowledge storage is included, and whether the chat carries a WebWorks badge.
Pay-As-You-Go
One live Assistant on the free model. Pay only for smarter answers.
Free
No card required
- Included monthly AI usage Resets monthly
- No included monthly usage $5 launch credit to try smart models live
- Models
- Free model always included GPT-5.4 Nano; smart models with credits
- When your usage runs out
- Keeps answering on the free model
- Knowledge storage included
- 100 MB
- Live AI Assistants In Deployment switched on
- 1
- White-label chat No WebWorks badge
- Not included
- Single sign-on
- Not included
Pro
Up to five live Assistants, white-label chat, and AI usage included each month.
$45/mo
billed annually
or $49/mo month-to-month
- Included monthly AI usage Resets monthly
- $30 in AI usage about 600 questions on GPT-5.4 Mini
- Models
- All models including the latest, currently GPT-5.5
- When your usage runs out
- Keeps answering on the free model add usage any time
- Knowledge storage included
- 1 GB
- Live AI Assistants In Deployment switched on
- 5
- White-label chat No WebWorks badge
- Included
- Single sign-on
- Not included
Enterprise
Unlimited live Assistants, with the most included usage and storage, for documentation sets running several Knowledge Bases.
$145/mo
billed annually
or $169/mo month-to-month
- Included monthly AI usage Resets monthly
- $100 in AI usage about 2,200 questions on GPT-5.4 Mini
- Models
- All models including the latest, currently GPT-5.5
- When your usage runs out
- Keeps answering on the free model add usage any time
- Knowledge storage included
- 5 GB
- Live AI Assistants In Deployment switched on
- Unlimited
- White-label chat No WebWorks badge
- Included
- Single sign-on
- Planned for release
Both billing intervals are self-service from day one, and the annual rate is the lower of the two. All pricing is introductory.
What a question costs.
Two numbers, the same on every plan — a Pay-As-You-Go question and an Enterprise question cost the same.
Four things move the cost of an answer: the model, the reasoning effort, how much of your Knowledge Base the answer reads, and the length of your instructions.
Preview shows the exact cost of your configuration before you go live. Run the questions your readers actually ask, against your own Knowledge Base, and read the price of each answer before an Assistant goes In Deployment.
What happens when…
- Paid usage runs out
- The Assistant keeps answering on the free model. Add usage any time — buy credits once, or let auto top-up do it for you.
- I set a daily budget
- Budgets are per Assistant and set in dollars. At the cap, the Assistant keeps answering on the free model — or pauses until the next day, if you prefer.
- I never add a card
- Pay-As-You-Go stays free on the free model. A paid plan costs exactly the plan price.
- I have a fixed annual budget
- Pick Pro or Enterprise and leave auto top-up off. The cost is exactly the plan price, and usage beyond the allowance continues on the free model.
How the numbers work.
- A typical question
- The ~5¢ used throughout the plan comparison is a typical grounded question on GPT-5.4 Mini at default settings, and the rate is the same on every plan. A free-model answer costs nothing on any plan. Preview shows what your own configuration costs.
- Allowances reset monthly
- Included usage resets at the start of each monthly period and does not carry over. The allowance is the same on either billing interval. Question counts beside an allowance are estimates on GPT-5.4 Mini, not entitlements.
- Launch credit
- Pay-As-You-Go includes a one-time $5 launch credit to try smart models live. When it is spent, the Assistant continues on the free model; buy credits any time to keep smart models on.
- Knowledge storage
- Every plan includes a Knowledge Base storage cap — 100 MB on Pay-As-You-Go, 1 GB on Pro, 5 GB on Enterprise. Storage never counts against your usage. The cap is the most your Knowledge Bases can hold on the plan; a larger documentation set means a larger plan, not a bill.
- Cost controls
- Budgets, spend caps, and auto top-up are on every plan, including Pay-As-You-Go. A daily budget is per Assistant and set in dollars. When an Assistant reaches it, it keeps answering on the free model — or pauses until the next day, if you prefer — and you get an email either way.
- Fair use
- Free-model answers carry fair-use limits — a per-visitor limit and a daily ceiling per organization — and those are hard stops: past them, public chat pauses until the limit resets.
- All pricing is introductory
- Plan prices, included usage, storage caps, and per-question figures are introductory and reviewed on a regular cadence.
How Platform and ePublisher fit together.
WebWorks Platform is a separate subscription from ePublisher. ePublisher 2026.1 produces both halves from your Reverb 2.0 target: turn on Generate Knowledge Base and every build emits the AI-ready Knowledge Base archive, and turn on Generate Assistant to put the AI Assistant in the published help.
Platform is the cloud service on the other end — create an Assistant, paste its Assistant ID into the target, upload the archive to its Knowledge Base, and your readers get grounded answers on your next publish.
Start free, then pick the plan that fits.
Pay-As-You-Go is free with no card required, and includes a $5 launch credit to try smart models live. Build and test as many Assistants as you like before anything goes In Deployment.
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