Pricing
Free to see the data. $59 to ship on it.
One paid plan. Real-money bot builders need the whole archive, not a feature ladder. Cancel anytime, including from your agent.
Free$0 | Pro$59 / mo | |
|---|---|---|
| Resolved-market backtests | Up to 50 markets per run | Full universe, no per-run cap |
| Price data fidelity | 12-hour bars | Tick and L2 order-book data, as coverage lands |
| Fill model | Midpoint (last price) | Order-book fills with real spread |
| Brier, log-loss, calibration | ✓ | ✓ |
| Prediction-market quality flags | ✓ | ✓ |
| Lookahead-safe by construction | ✓ | ✓ |
| Parameter sweeps | — | ✓ |
| Walk-forward (out-of-sample) | — | ✓ |
| Concurrent backtests | 1 | Up to 10 |
| Spot cross-market data (BTC/ETH/SOL) | — | ✓ |
| Persistent strategy library | — | ✓ |
| Public result sharing + comparison | — | ✓ |
| API keys | 1 | 10 |
| Result retention | 7 days | 1 year |
| Start free | Get Pro |
Why one plan?
A prediction-market bot builder with real money on the line needs the whole thing: full market coverage, honest fills, sweeps, walk-forward. Splitting that across tiers just adds friction. Free exists to prove the data is real; Pro is everything.
What you're paying for
Not compute. Compute is cheap, the vectorized engine runs the full resolved universe in about 23 seconds. You’re paying for the data: resolved outcomes stitched to on-chain settlement, and a tick-level order-book archive captured live that no public API will sell you back.
The free tier is real, not a teaser
Free runs genuine lookahead-safe backtests with Brier and calibration on up to 50 markets at 12-hour fidelity. Enough to confirm the data and the workflow before you pay. No card, no time limit.
Tick and L2 data — be clear-eyed about depth
Resolved-market price history goes back to 2023. The tick-level order-book archive is younger: it only goes back to when we switched the live collector on, and it deepens every hour. Order-book archive: live since 21 May 2026. Pro unlocks order-book fills for markets as that coverage matures; early subscribers get the archive from the earliest point we recorded it.
Refunds
7-day money-back for first-month users with under half their usage spent. Beyond day 7, no refunds; the subscription runs to period end on cancel. Infrastructure-error charges are auto-refunded.
Do you place trades?
No. Bagtester is a backtester. We never route orders to Polymarket. The output is a strategy you run live yourself, with a clean backtest behind it. See the FAQ.
Still have questions? Read the FAQ →