Multi-venue
Predexon Alternative for Historical Polymarket Data
Overview
Quick comparison
From Predexon pricing and PolyOrderbooks product docs.
| Feature | Predexon | PolyOrderbooks |
|---|---|---|
| Historical prices | Yes — candlesticks, market price, volume | Yes |
| Historical L2 books | Yes — orderbook history; tick-level Parquet deltas | Yes — full bid/ask ladders |
| Capture / delivery | Historical snapshots at ms resolution; tick Parquet bulk | 250ms capture; 250ms query resolution on every plan, including free |
| REST API | Yes — api.predexon.com | Yes |
| Python tooling | TypeScript SDK documented; Python client not prominently documented | Official Python SDK on PyPI |
| Bulk tick export | Yes — tick history Parquet downloads | Enterprise S3 delivery (Parquet, CSV, JSON) — not on self-serve plans |
| Free tier | Yes — unlimited core market data, historical trades, orderbooks, and pricing on Free | Yes — Starter: 250ms L2, prices, and metrics at $0 (3-day history) |
| Starting paid price | $49/month Dev (Pro $249, Enterprise $499+; historical endpoints free on all plans) | $19/month Pro (public pricing at time of verification) |
| Venue coverage | Polymarket, Kalshi, Limitless, Opinion, Predict.fun, Binance, Dflow | Polymarket crypto markets (Up/Down and related) — depth history, not metadata breadth |
| Historical coverage | Not publicly documented per-venue start dates | Continuous 250ms archive from 3-day Starter windows to 30–120-day paid windows; resolved markets stay queryable |
Source (Predexon): https://predexon.com/pricing
Multi-venue vs Polymarket-specialized
Predexon covers Polymarket, Kalshi, Limitless, Opinion, Predict.fun, Binance, and Dflow with cross-venue search, smart money, and live feeds on higher tiers.
PolyOrderbooks narrows to Polymarket crypto with aligned prices, metrics, and L2 over REST — smaller surface area for crypto backtests.
Historical data and order books
Predexon documents ms-resolution orderbooks via REST plus tick Parquet. Core market data, historical trades, historical orderbooks, and pricing endpoints are unlimited on the Free plan — served as ms-resolution snapshots and deltas rather than a stored, reconciled grid. WebSocket and smart-wallet routes are gated on paid tiers, which start at $49/month against PolyOrderbooks' $19/month entry.
PolyOrderbooks offers 250ms capture, reconciled against the live book every 60 seconds so the stored ladders are not reconstructions, with query resolution down to 250ms on every plan including free, via /markets/{slug}/books and the Python SDK.
Predexon documents tick-level Parquet deltas. If you rebuild books from a delta stream, it is worth measuring the result: across 381,093 checkpoints on a public Polymarket archive, 67.8% of replayed books disagreed with the source and 6.4% were crossed. That is a property of event streams at this message rate, not of any particular vendor.
When each may be a better fit
Predexon — multi-venue research, live feeds, wallet analytics, tick replay. PolyOrderbooks — Polymarket crypto L2 stored and reconciled at 250ms capture, 250ms query resolution on every plan including free, official Python SDK, and published tier pricing from $19/month.
FAQ
What is Predexon?
Predexon is a prediction-market data layer with REST and WebSocket APIs across Polymarket, Kalshi, Limitless, Opinion, Predict.fun, Binance, and more — plus wallet analytics and tick Parquet downloads.
Does Predexon have historical order books?
Yes — Predexon documents GET /v2/polymarket/orderbooks and tick-level orderbook Parquet as separate products.
Predexon vs PolyOrderbooks — scope or focus?
Predexon is broader: multi-venue markets, wallets, smart money, and live feeds. PolyOrderbooks is narrower: a Polymarket crypto historical archive with aligned prices, metrics, and L2 over REST.
Does Predexon require a paid plan for historical data?
Predexon's Free plan does include unlimited core market data, trades, and pricing endpoints — served at ms-resolution snapshot/delta granularity rather than a stored reconciled grid. For Polymarket crypto, PolyOrderbooks pairs a $0 Starter tier (250ms L2, 3-day history) with a $19/mo paid entry and published pricing — compare coverage and capture resolution before choosing.
What are Predexon alternatives?
For Polymarket-only historical L2 APIs see PolyOrderbooks or PolymarketData. For Parquet bulk see Telonex. For event-driven depth across venues see DepthFeed.