KEYSTONEPlanned
Free
$0/ month
Find your starting point.
A planned, limited way to use the Keystone workspace and get a feel for its approach.
- A separate Keystone workspace tier
- Limited included usage
- Not the same product as Pytrel Park
KEYSTONE / PLANNED MEMBERSHIPS
Room for the way
you work.
Start with a question. Grow into evidence review. Build toward a professional decision seat.
Product direction, not an active offer. Memberships are not available to purchase yet.
KEYSTONEPlanned
Basic
$39.99/ month
Ask the right question.
Everyday construction questions, learning and planning—with a clearer starting point for the work.
- General construction questions
- Learning, planning & context
- Question-led, without document uploads
KEYSTONEPlanned
Plus
$99.99/ month
Review the evidence.
A planned step into limited document review, with sources, conflicts and missing information kept visible.
- Limited PDF & spreadsheet review, planned
- Source-aware findings & conflicts
- Explicit missing information & HOLDs
KEYSTONEPlanned
Pro
$199.99/ month
Build the decision brief.
The planned professional Decision Seat for deeper document working sets and reviewable handoffs.
- Larger drawing & specification sets, planned
- Decision briefs & reusable draft artifacts
- Professional review and handoff workflow
COMPARING THE PLANNED BASIC MEMBERSHIP
Frame the problem, establish context, and prepare a better next step.
This selection only changes the comparison. It does not create an account, activate a plan or reserve a price.
Included usage
More included capacity than Free is planned. Exact limits will follow evaluation.
Document capacity
Question-led: no PDF, drawing or spreadsheet custody in the planned Basic scope.
Depth of work
Everyday context and preflight support. No tier-specific model or performance claim is established.
Planned billing approach: no unlimited-use promise, automatic overage or second token charge for usage included in a subscription. Exact limits and final purchase terms will be shown before any paid service opens.
THE PLANNED KEYSTONE FREE JOURNEY
Try it. Make it yours.
Keep the work moving.
Guest exploration → a free account → a further allowance → a server-owned reset or an upgrade. The screens below are illustrative, not your account or usage status.
01 / GUEST EXPLORATION
Start with a useful answer.
The planned guest allowance gives someone room to try Keystone before creating an account. The exact allowance is still being evaluated.
KeystoneIllustrative screen
A little room to explore.
Try a focused question and see how Keystone approaches the work. A visible allowance will show when an account is needed for the next request.
Explore authored examplesThis link opens the current demonstration. It does not start guest AI usage.Know the limit before the next task. The intended flow finishes admitted work and keeps completed output accessible under its ownership and retention rules. No surprise interruption, hidden paywall on an earned result, or automatic charge.
This is the planned Keystone Free flow. Park remains a separate, always-free playground direction; it is not a paid Keystone tier.
MODEL · DEPTH · MEMBERSHIP
Three different choices.
One clear experience.
A membership is not a model version. A longer answer is not proof of more intelligence. Here is how the intended controls fit together.
Keystone
The flagship Pytrel intelligence family. This site shows its authored preview. No customer-selectable model editions have been released here.
Explore KeystoneThe view you need
Concise, Balanced and Deep are intended presentation and work-depth preferences. A future service will map them to allowed capability and budget.
Preview preference, not a provider or model selection.Free → Basic → Plus → Pro
The planned progression in usage, document capacity and depth of work. Specific capabilities and limits must be established before release.
Takeoff, API access and Relay remain separate products.PYTREL SYSTEMS / CHECKOUT
One company.
One home for checkout.
When memberships open, purchasing will stay on pytrel.com. Pytrel AI is the intelligence experience; Pytrel Systems remains the parent company.
There is no active Keystone checkout in this preview. The link below opens the company site, not a payment session.
And Park? A different door.
Pytrel Park is the always-free developer evaluation playground for technical and construction questions. Its authored static demonstrations let people inspect the intended response behavior and assess future API fit; they do not use a live model or API. Park remains distinct from the Keystone Free membership.