Explore the approach
Choose a scenario, inspect the knowns and unknowns, and open a reviewable draft.
THE PREVIEW, PLAINLY
A clear view of
what comes next.
Pytrel AI is a new branch of Pytrel Systems. This public experience introduces the direction—and makes the current boundary explicit.
Keep it honest
No live AI, uploaded material, project action or account entitlement is operating here.
A FEW USEFUL ANSWERS
Good questions. Clear answers.
Am I talking to live AI?
No. Every question and response shown here is an authored, synthetic example. Choosing a card changes the demonstration on your screen; it does not call a model.
Can I upload a drawing or use my Takeoff project?
Not in this preview. There is no upload or document-processing connection. This site does not carry Takeoff projects, account sessions, sources or authorization into Park or Keystone.
What are Nexus and Keystone?
Nexus is the provider-neutral command center Pytrel is building for AI tools and agents working around one governed project. Keystone is Pytrel’s first-party construction-intelligence family and a future participant inside Nexus rooms. Today, both public experiences are authored previews—not released customer AI services or a Pytrel-trained foundation model.
Is Park the same as Keystone Free?
No. Park is the always-free developer evaluation playground. Its intended job is to let people ask Pytrel technical and construction questions, examine the response behavior, and determine whether future API access fits their software. Today, Park shows authored static demonstrations only: no question is submitted, no live model or API runs, and no account or usage allowance is activated. Keystone Free is a separate planned workspace tier.
Does interacting with this page train a model?
No. This preview has no live prompt submission or feedback intake and does not train a model. Any future improvement or research program would require its own disclosed rights and consent process.
Can I purchase API access or a paid plan?
Not yet. The Memberships page shows the planned Keystone lineup, not an active offer. When purchasing opens, checkout will stay on pytrel.com. This preview has no checkout, account connection, trial, usage balance or API key generation. API access is a separate future service.
Does choosing a focus, perspective, or response depth activate anything?
No. Construction Focus, Perspective, and Response Depth organize this authored experience. They do not select a provider model, establish technical coverage, grant a specialist, load a source, change an account profile, or create an entitlement.
How will account usage work?
Future Keystone usage will be measured by the server and shown with the remaining allowance and reset time. Completed work stays available when new usage is paused. Exact allowances, periods, refunds, upgrades, and customer eligibility are not established by this static site, and the browser does not count or grant usage.
What can I use the example artifacts for?
They illustrate structure and review discipline. They are synthetic drafts, not a technical approval, product selection, code conclusion, project instruction or substitute for review of the actual controlling sources.
Open the frame. Protect the work.
Name the uncertainty. Keep the decision with the human.