# Pricing rationale: Mizan Calibration Check Toolkit

Prepared 2026-11-14. These prices are HYPOTHESES, not validated demand.

## Plans on Whop
- Open (waitlist, $0): public weekly sets and passports on the QANTS site. Free.
- Toolkit (self-host): $39, one-time. One person, own use.
- Team license (up to 15): $149, one-time. One organisation, up to 15 people.
- Digital download (zip). No hosted service, no support commitment, no recurring billing.

## Why these numbers
Closest comparables are the per-seat or per-month eval/observability tools (Langfuse Core $29/mo, LangSmith Plus $39/seat/mo, Arize AX Pro $50/mo), all of which bill monthly for a hosted service. This is a one-time self-host download with no hosting, so it is priced at the low end of that band as a one-off: $39. Team at $149 is roughly 4x for up to 15 people (about $10 per person), well below one month of a single hosted Pro plan ($199 to $249: Langfuse Pro, Braintrust Pro).

The free Open tier (public weekly sets and passports on the QANTS site, waitlist on Whop) stays free because every vendor read has a free tier (LangSmith, Langfuse, Braintrust, Arize) and because the closest neighbours ForecastBench and Metaculus are free.

## Fee effect
Whop's card fee (2.7% + $0.30, before any international or conversion surcharge) is about 3.5% of $39 and 2.9% of $149. The fixed $0.30 makes low prices fee-heavy.

## What this research does not show
No source read measures willingness to pay for a narrow calibration tool. Competitor prices are for hosted, usage-metered platforms, not self-host downloads, so they are anchors, not proof. The first real sales (or none) should be treated as the price test.

## Sources (all read 2026-11-14; from `calibration_check/pricing_research.md`)
- LangSmith: https://www.langchain.com/pricing (Developer $0; Plus $39 per seat per month)
- Langfuse: https://langfuse.com/pricing (Hobby free; Core $29/month; Pro $199)
- Braintrust: https://www.braintrust.dev/pricing (Starter $0; Pro $249/month)
- Arize AX: https://arize.com/pricing (Free; Pro $50/month)
- ForecastBench: https://www.forecastbench.org/ and Metaculus: https://www.metaculus.com/about/ (no price on the pages read)
- Whop fees: https://docs.whop.com/fees (2.7% + $0.30 per card payment; +1.5% international; +1% currency conversion)
- OpenTimestamps: https://opentimestamps.org/ (free calendars)