Predictefy vs Predexon: The Best Predexon Alternative (2026)
The Short Answer
Predictefy is the best Predexon alternative for developers building a cross-venue prediction market workflow. The Predictefy prediction market API combines normalized data across 15+ venues with market matching, WebSocket streams and client-signed trading. Predexon offers market data, wallet analytics and a dedicated tick-history download product. Choose Predictefy when the job starts with comparing the same event across venues and continues through evaluating and acting on that comparison.
Key Takeaways
- Predictefy serves 15+ venues through one normalized API, with cross-venue matching on every plan.
- Predexon's coverage table lists Polymarket, Kalshi, Opinion, Limitless and Predict.fun, with capabilities shown separately for each.
- Both have free access. Predictefy includes a monthly credit allowance and WebSocket streams; Predexon distinguishes premium requests from designated free endpoints.
- Compare historical REST reads and bulk tick downloads separately. They are different products with different billing rules.
Product details and monthly prices checked on October 27, 2026.
Predictefy vs Predexon at a glance
| Buying question | Predictefy | Predexon |
|---|---|---|
| What is the starting point? | Normalized prediction market data across 15+ venues | Market data and blockchain-indexed wallet analytics, plus tick-history downloads |
| How do I compare venues? | Matched markets and stored pair price differences on every plan | Venue-specific market, price and order-book data in its REST product |
| What does free access include? | 25,000 credits a month and 2 WebSocket streams | 1,000 premium requests a month; designated free endpoints are outside that quota |
| What are the monthly paid plans? | Builder $48.88; Pro $149; Enterprise custom | Dev $49; Pro $249; Enterprise from $499 |
| Historical data workflow | Historical API reads and Pro history replay for supported captured data | Historical REST endpoints and separately quoted Parquet tick downloads |
Start with the cross-venue question
A catalog tells you which markets exist. A useful comparison also identifies which contracts ask the same question. That distinction matters when an election contract has a different cutoff date or settlement source on each venue.
Predictefy groups related contracts into matched markets. Your application can retain each venue's identifiers while presenting the comparison in one place. Matching and each pair's stored indicative price difference are available on every plan. For a dashboard that starts on Polymarket and Kalshi, the same integration also gives you a path to 15+ venues.
A stored price difference is a research signal. Predictefy's Pro arbitrage feed checks requested size against book depth, venue fees and resolution equivalence before a row qualifies. Refresh the inputs and include network costs in your execution calculation. A displayed gap alone does not establish a fill.
Separate historical snapshots from tick downloads
Predexon's historical offering deserves a precise comparison. Its pricing page places designated historical REST endpoints outside the premium-request quota. Its bulk order-book tick product uses separate data credits and quotes a download before delivering compressed Parquet files.
The tick product covers Polymarket, Kalshi and Opinion. It is designed for reconstructing captured book changes, which can suit queue and fill research. A subscription price by itself does not describe the total cost of that workload.
Predictefy exposes historical data through the same integration used for market discovery and comparison, with history replay on Pro. Evaluate your actual venue, outcome and time range. Inspect timestamps, source and quality fields before calculating a backtest result. This keeps a usable sample range at the center of the buying decision.
What will the workload cost?
Predictefy's Free plan supplies 25,000 credits each month for evaluation. Builder is $48.88 a month with 250,000 credits. Pro is $149 with 2,000,000 credits and includes the arbitrage feed, price-gap feed and history replay. Cross-venue matching remains available on every plan.
Predexon's Free plan includes 1,000 premium requests a month at a one-request-per-second rate limit. Dev is $49 a month with 1 million premium requests, and Pro is $249 with 5 million. Its designated free endpoints do not use that premium allowance. Bulk tick downloads have their own pricing.
Credits and premium requests measure different things. Price a representative day of discovery, book reads, streams and history rather than dividing one monthly price by a headline allowance. For a commercial Predictefy application or data redistribution, use the Enterprise terms.
How to evaluate a move from Predexon
Take one event you already follow and keep its existing venue IDs. Find the corresponding markets in Predictefy, inspect the matched pair, then compare both books at the same observation time. Record the outcome IDs and settlement wording alongside the prices.
Next, run the workflow you intend to use: a cross-venue screen, a historical study or a paper trade. Predictefy supports paper trading and a separate client-signed execution flow for supported venues. Evaluate the full sequence rather than comparing a historical dataset with a live quote subscription.
Choose Predictefy for a unified cross-venue build. Start with its market data and matching, then add Pro qualification and replay as your research develops. That gives the comparison itself a clear place in your application.
Frequently Asked Questions
What is the best Predexon alternative?
Predictefy is our recommendation for a cross-venue prediction market workflow. It combines data across 15+ venues with matching, streams and client-signed execution for supported venues.
Does Predexon have a free plan?
Yes. Its Free plan includes 1,000 premium requests a month, while designated free endpoints are outside that quota. Bulk tick-history downloads use separate data credits.
Can Predictefy compare Polymarket and Kalshi?
Yes. Cross-venue matching is available on every plan, including stored indicative price differences between matched contracts.
Which Predictefy plan includes the arbitrage feed?
Pro, at $149 a month, includes the arbitrage feed, price-gap feed and history replay. Free and Builder include cross-venue matching.
How should I compare historical data?
Request the exact venue, outcome and dates your research needs. Check timestamps, book representation, coverage and billing separately for REST reads, replay and bulk downloads.