Plans

Choose how much room you need to work.

Both plans give you the core Qytherion workspace. Starter gives you a defined AI allowance. Workspace removes Starter’s monthly and hourly AI caps and adds eligible power-user capabilities.

Start here

Starter

$7/month + tax

For everyday AI work with predictable usage limits.

  • Qytherion chat workspace
  • Specialist library
  • Documents and built-in tables
  • 400 AI messages per month
  • 40 AI messages per hour
  • Account, billing, and privacy controls
  • Optional Usage Packs

Need more usage later? Add a Usage Pack or move to Workspace.

Choose Starter
For heavier use

Workspace

$20/month + tax

For people who use Qytherion more heavily and don’t want Starter’s monthly or hourly AI caps.

  • Everything in Starter
  • No Starter-style monthly or hourly AI caps
  • Architect Studio included
  • Specialist publishing where your account is eligible
  • Optional hosted-model capacity when available

Provider availability, specialist publishing, and optional hosted capacity can depend on account capabilities and service availability.

Choose Workspace

Add what you need.

Usage Pack — $5/month + tax

Adds 500 AI requests per month to Starter. Packs can be added as you need more headroom.

Add Usage Pack

Architect Studio — $12/month + tax

3D building-design tools for floor plans, systems overlays, and related design workflows. Included with Workspace and available as a Starter add-on.

Add Architect Studio

Hosted AI models — $9/month + tax

Optional hosted AI capacity for Workspace accounts when the service is available and enabled.

View hosted-model option

The workspace behind both plans

AI chat

Research, reason, draft, and develop work across separate conversations.

Specialized agents

Choose AI specialists designed around different kinds of work.

Documents

Turn conversations into written work you can continue developing.

Built-in tables

Keep structured information and trackers beside the work that created them.

Files and PDFs

Bring supporting files into your workflow and work with document material inside Qytherion.

Provider choice

Use supported AI providers available to your account and connect your own provider keys where supported.

Privacy controls

Protected mode can redact sensitive patterns before content reaches AI providers. Optional encrypted storage is available for saved chats.

Try it before you subscribe.

The signed-out preview gives you a short introduction to Qytherion—about 10 messages—so you can see how the workspace feels before choosing a plan.

Try free preview

From signup to workspace

Create your account

Register and review the policies that apply to your account.

Choose a plan

Start with Starter or choose Workspace if you already know you need more AI usage.

Open Qytherion

Enter the workspace and start a conversation.

Looking for Sentinel?

Sentinel is a separate server-security product and is not included with Qytherion workspace plans.

Core starts at $49/month. Pro is $299/month. Enterprise/Grid deployments are handled through sales.

View Sentinel