ζ Zetesis Open the chat

Plans

Assess the scientific claim behind an opportunity. Explore referenced evidence, attach documents and examine what supports the claim and where uncertainty remains.

ChatAsk questions about a claim or an attached document. Answers cite each source by its public identifier.
Scientific screenA recorded assessment of one central scientific claim, run on the Zetesis assessment protocol, with each dimension graded.
Full diligence reportA six-pillar assessment with a versioned, digitally signed record. Part of team plans.
Free
$0
  • Chat, 20 turns a month
  • 3 scientific screens a month
  • Free evidence retrieval in supported AI assistants (Claude, Copilot Studio, Codex). The assistant interprets the sources itself; a scientific screen runs the Zetesis protocol.
Start in the chat
Starter
$95 / month
Launch price. Kept for as long as your subscription stays active.
  • 150 chat turns a month
  • 20 scientific screens a month, in the web chat, the terminal, MCP and the API
  • Attach decks, papers and protocols (PDF, Word, PowerPoint)
  • Conversations saved to your account
  • One user · cancel any time
Starter includes scientific screens, not full diligence reports.
Subscribe
Subscribe, receive your access token by email, and open the chat.
Terms · Privacy · Your documents · Support
Teams
Custom pricing

For a deal team working an opportunity together: several users and read-only reviewers on shared assessments, full diligence reports, and access through MCP and the API.

Scope, users, security requirements and any shared workspace are agreed in the quote.
Discuss team access

Questions

How the allowances work
  • Reset: allowances reset at the start of each calendar month (UTC).
  • Unused allowance does not roll over.
  • At the limit: chat and screens pause until the next month, or until you upgrade. Free evidence retrieval in AI assistants keeps working.
  • Screens in the chat: asking the chat for a Zetesis screen uses one chat turn and one scientific screen.
  • Free use is counted per network address, so people on a shared office network share one free allowance. A subscription is counted per account.
Your documents
  • Files are read in your browser (or terminal), and the extracted text is sent to Zetesis. Files up to 60 MB; up to 120,000 characters of text are used.
  • Conversations, including the text of attached documents, are stored with your conversation so it can be restored. To delete them, email avidan.r@zetesis.science.
  • Text is processed by Anthropic's Claude API, which does not train on content submitted through its commercial API. Details are in the privacy policy.
  • Do not attach material you cannot share with a model provider, such as documents received under an NDA, unless your agreement with Zetesis covers it.
Connect Claude, Codex or Copilot

After you subscribe, add your access token to the Zetesis MCP server so your assistant uses your plan.

Claude Code

claude mcp add --transport http zetesis https://api.zetesis.science/mcp --header "Authorization: Bearer YOUR_TOKEN"

Codex

export ZETESIS_TOKEN=YOUR_TOKEN
codex mcp add zetesis --url https://api.zetesis.science/mcp --bearer-token-env-var ZETESIS_TOKEN

Microsoft Copilot Studio: Tools › Add a tool › Model Context Protocol › https://api.zetesis.science/mcp, with API key authentication: header Authorization, value Bearer YOUR_TOKEN.

Web chat: "Access token" in the header. Terminal chat: /token YOUR_TOKEN.

Lost your access token

Reply to your welcome email, or write to avidan.r@zetesis.science from the address you subscribed with, and a new token will be issued.

Payments are handled by Lemon Squeezy, which acts as merchant of record and issues the invoice with the applicable tax. Zetesis assesses the claim; the decision remains with you.