Promethean Markets
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Pricing

Priced by usage, not by promise.

You buy released days and metered API access. Numbers are set at launch; the structure below is fixed. Candidate data is never sold, on any plan.

Evaluate

For a first look at the data.

Free
no card required
Get access
Full catalog + availability index
2 released sample days per source
Operator-provisioned daily request budget
Community support
RECOMMENDED
Research

Full history for one desk.

Metered
standard daily budget · price at launch
Get access
Full released history, all six sources
20,000 requests / day
Up to 3 API keys
Email support
Desk

For teams and heavier use.

Invoiced
annual · custom budgets
Talk to us
Everything in Research
Higher, custom daily budgets
More keys, per-key budgets
Priority coverage requests
Invoicing + certification reporting

Every key has a daily request budget; exceeding it returns 429 daily_budget_exceeded and never charges. Unauthorized requests never consume budget. Data licensing terms are on the data license page.

FAQ

The honest answers.

Is candidate data ever purchasable?
No. Kalshi, Limitless, PancakeSwap Prediction and Polymarket US are in candidate collection and are never sold, on any plan, until each has its own certified days.
How do budgets and 429s work?
Every key has a daily request budget. Authorized requests count; 401s do not. Over budget returns 429 daily_budget_exceeded and never charges. The counter resets at 00:00 UTC.
Can I redistribute the data?
Internal research, modeling and backtesting are covered. Redistribution — whole or partial, raw or identifiably derived — requires a separate written agreement. See the data license.
How is a Desk plan invoiced?
Annually, with custom budgets and per-key overrides. Talk to us with your expected daily volume and coverage needs.
What is the delivery SLA?
Data for a completed UTC day is available after nightly certification. We never promise delivery faster than the measured certification time.