Prediction-market directory

Business directory

Explore prediction-market products and services through their sources: what they do, reported pricing and venues, website-declared details and retained history.

991

website / project records

288

historical catalogue profiles

2,242

page-declared statements

Evidence package: . Includes 790 first-party site records and 201 additional historical catalogue records. These are not counts of verified legal companies. Historical catalogue claims retain their earlier dates; a listing is not a passed review.

991 matching records. Alphabetical order; inclusion and order are free.

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AI Agents & Research

Almanac

Catalogue label: Sportstensor (Almanac)

Bittensor subnet 41 where competing sports models are scored on real trades routed through Polymarket. Now fronted by the Almanac interface; the original subnet repo is archived.

Reported venues: Polymarket

Historical pricing: Not published

First-party page observed · Not assessed

Catalogue snapshot:

AI Agents & Research

Alphapoly

Chainstack project that groups correlated Polymarket markets, uses an LLM to extract and validate logical implications, then prices covering portfolios and tracks positions. Trades against Polymarket V2 via deposit wallets.

Reported venues: Polymarket

Historical pricing: Free

Historical catalogue only · Not assessed

Catalogue snapshot:

1 linked repository records

AI Agents & Research

Alphascope

Free research workspace that turns market data and news into probability forecasts and opportunity flags across Polymarket, Kalshi, Manifold and Opinion. Informational only, no order routing.

Reported venues: Polymarket, Kalshi, Manifold, Opinion

Historical pricing: Free

First-party page observed · Not assessed

Catalogue snapshot:

3 website-declared statements

Arbitrage

ArbBets

Scanner that flags YES/NO price gaps across Polymarket, Kalshi and Opinion (990+ matched pairs), with alerts and a REST API on higher tiers. Does not place trades.

Reported venues: Polymarket, Kalshi, Opinion, Novig, sportsbooks

Historical pricing: Basic $59/mo, Pro $149/mo, Premium $299/mo

Historical catalogue only · Not assessed

Catalogue snapshot:

Data & APIs

Artemis

Investment research platform whose prediction markets sector page tracks volume, open interest and users for Polymarket and Kalshi, alongside crypto and equity data.

Reported venues: Polymarket, Kalshi

Historical pricing: Free tier; paid plans not published on load

Historical catalogue only · Not assessed

Catalogue snapshot:

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Historical descriptions and catalogue claims: Kairos contributors, CC BY 4.0. Vultax adds source matching, presentation and factual comparisons. Attribution, licences and coverage.