As of 23 August 2026, Oddpool's pricing page carries a notice: “Oddpool is no longer accepting new subscriptions. Existing subscriptions and free accounts continue as normal.” If you were about to sign up for Pro and found that door closed, here is an honest account of what Oddpool did well and where MarketMaster lands.
Oddpool was strongest as data infrastructure — a generous free tier, hundreds of dashboards, paper trading, and a serious API with WebSocket streaming.
MarketMaster covers the same two venues with a free scanner, machine-verified arbitrage at $12.99/month, and an API that starts free and reaches 1,000,000 requests for $29.99/month. It has no paper-trading mode, and it does not pretend to.
Oddpool figures are its published tiers as of 23 August 2026. Pro and Premium are shown for reference — they are not currently purchasable by new customers.
| MarketMaster | Oddpool | |
|---|---|---|
| Open to new customers | Yes | No — new subscriptions closed |
| Free tier | $0 forever — full scanner, analyzer, trade journal, venue comparison | $0 forever — 750+ dashboards, cross-venue search, historical charts, paper trading |
| Arbitrage scanning | $12.99/mo Pro | $30/mo Pro (unavailable) |
| Whale tracking | Yes — $10k+ trades, free tier | $500+ trades, Pro (unavailable) |
| Venues | Kalshi, Polymarket | Kalshi, Polymarket |
| Paper trading | No | Yes — on the free tier |
| Fair value & EV model | Yes — modelled fair value, EV edge, quarter-Kelly sizing | Not advertised |
| Resolution verification | Machine-verified before any pair is called an arb | Not advertised |
| Trade journal & P&L | Yes — free tier, synced from your exchange | Not advertised |
| Alerts | Yes — every few days free, within minutes on Pro | Not advertised |
| API — free | 1 key · 1,000 req/mo · SDKs · MCP server | 1 key · 1,000 req/mo · 1 WebSocket |
| API — 1M requests | $29.99/mo · 10 WebSocket connections | $30/mo · 3 WebSocket connections (unavailable) |
| API — mid tier | $9.99/mo · 50,000 req/mo · 3 connections | None between free and Pro |
| MCP server (Claude, Cursor) | Yes | No |
| Enterprise / S3 data dumps | No | Yes — custom tier |
Oddpool built things we have not, and it is worth being straight about that.
Your Oddpool free account keeps working, so there is no rush and no reason to take our word for any of this. Open the live scanner in another tab and compare the two on the same markets for a week.
The one thing worth checking early is the API, since that is the part with code depending on it. A free MarketMaster key is 1,000 requests a month — the same allowance Oddpool's free tier gave — which is enough to port an integration and diff the outputs before you pay anything.
Paper trading, its dashboard library, and any enterprise data feed you already have in place. A working free account is still a working free account.
Arbitrage scanning you can actually buy, resolution-verified pairs, EV and quarter-Kelly sizing, alerts, and an API with a tier between free and a million requests.
Not exactly. As of August 2026 Oddpool's own pricing page states that it is no longer accepting new subscriptions, and that existing subscriptions and free accounts continue as normal. So current users are not cut off, but new users cannot buy the Pro or Premium tiers that contain arbitrage scanning and whale tracking.
Oddpool's free plan included 750+ dashboards, cross-venue search, historical charts, paper trading, one API key with 1,000 monthly requests and one WebSocket connection. Arbitrage scanning, the market-differences dashboard and whale tracking sat in the $30/month Pro tier.
No. MarketMaster has a trade journal that syncs your real positions from a read-only Kalshi API key or public Polymarket wallet and reports realised P&L, win rate and a skill rating. If simulated trading specifically is what you want, that is a genuine gap on our side.
Oddpool's free tier gave 1,000 requests a month with one WebSocket connection; Pro at $30/month gave 1,000,000 requests and 3 connections. MarketMaster's free API key is also 1,000 requests a month, API Starter is $9.99/month for 50,000, and API Pro is $29.99/month for 1,000,000 requests with 10 WebSocket connections.
We have no relationship with Oddpool and no inside knowledge of its plans. The status above is simply what its own pricing page said on 23 August 2026, and it may change. Where a capability is marked “not advertised”, it means we could not find it documented on the vendor’s own site — not that it definitely does not exist. Spotted something wrong? Tell us and we will correct it.
The full scanner and analyzer are free, forever. No card, no trial clock.
MarketMaster is an analytics tool. It does not provide financial advice or guarantee returns, and prediction markets carry real risk of loss.