PolyTest Alternative for Polymarket Historical Data

PolyTest facts from its public pages (verified September 24, 2026); PolyOrderbooks facts from our product docs.Scroll →

Source (PolyTest): https://polytest.io

PolyTest targets one workload: replaying recorded order books for crypto Up/Down markets and testing strategies against them. Its docs model a snapshot per order-book state with timestamps to the millisecond, plus a timestamp lookup API, so backtests are defined against a captured book rather than a synthetic candle. Coverage today is BTC, ETH, and SOL Up/Down across 5m, 15m, 1hr, 4hr, and 24hr timeframes, with XRP, DOGE, and BNB displayed as coming soon. If your strategy lives in that exact slice, PolyTest is built directly for it — but its own pages put a hard 8-level cap on depth per snapshot, which is a real constraint for fill simulation on liquid rounds.

The trade-off is the envelope. Its own numbers are self-reported: 14 days of history on the Builder plan ($29/mo or $17/mo billed annually), full history on Pro ($49/mo or $29/mo annually), and sub-second latency claims (42 ms p50, p99 under 120 ms). There is no permanent free tier — a 3-day trial converts to Builder unless cancelled.

Depth is capped at 8 levels. Both the live preview widget and PolyTest's own testimonial copy call out “8 levels” of depth per snapshot. For slip-heavy five-minute rounds with a near-certain winner, the full ladder is exactly what you need to reconstruct realistic fills — PolyOrderbooks stores the complete bid/ask ladder on every snapshot instead.

“Sub-second” is a latency figure, not a sampling grid. PolyTest's 42 ms p50 claim describes API response latency on top of captured snapshots. PolyOrderbooks captures every 250ms and offers 250ms query resolution on every plan including free — a uniform grid you can reason about, rather than a vendor-best-case round-trip time.

Uptime claims conflict across its own pages. The homepage advertises 99.9% uptime over the last 60 days, while the Pro plan lists a 99.5% uptime SLA. Ask for which number the plan you buy actually guarantees.

Every item below is scoped to the covered BTC/ETH/SOL Up/Down subset — a smaller envelope than the ongoing archive described in the next section.

• Backtests scoped to Polymarket crypto Up/Down rounds on the three covered coins
• Timestamp-based strategy entries against captured snapshots
• Multi-timeframe tests across 5m, 15m, 1hr, 4hr, and 24hr buckets
• Higher burst throughput for real-time pipelines (Pro allows 40 req/s bursts)
• A 3-day trial to validate responses before subscribing

If your research spans markets beyond three crypto Up/Down coins — or you need the full ladder rather than 8 documented levels — PolyOrderbooks captures Polymarket crypto order books every 250ms and serves them over REST with 250ms query resolution on every plan. Resolved markets stay queryable, the schema is stable, and a free Starter tier plus a free BTC 5-minute L2 sample let you validate before paying.

PolyOrderbooks is also the provider in this comparison with an officially published MCP server and a Python SDK on PyPI, so the same archive works from Cursor, Claude Desktop, or your own scripts.

If you would rather describe the strategy than write the replay loop, Backtest AI tests a plain-English idea against the same archive and explains every run.