Marketlens vs polymarketdata.co
A Polymarket data API covering multiple market categories at 1-minute granularity, with order books available on paid plans. Below is how it compares to Marketlens on market coverage, book resolution, history depth, backtesting, and price.
Last updated August 3, 2026
Competitor details as of August 2026, per each vendor's public site.
marketlens
polymarketdata.co
How Marketlens differs from polymarketdata.co
The core difference is capture resolution and what you pay to reach history. polymarketdata.co samples order books once per minute; Marketlens records every individual price change with a millisecond timestamp, anchored by periodic full snapshots, so the book at any instant reconstructs exactly. For queue position, fleeting liquidity, or slippage work, sampled minutes are not enough.
Access models also differ. On polymarketdata.co the free tier has no order books, books start at $60/mo with 1 month of history, and unlimited history requires the $360/mo Ultra plan. Every Marketlens tier, including free, queries the full archive; Pro starts at $29/mo. Marketlens also ships what polymarketdata.co does not publish: an open source Python SDK with Execution and Alpha backtesting, bulk Parquet exports, and an MCP server for AI agents.
Which should you pick?
Pick marketlens
Every recurring Polymarket market type at millisecond book resolution, a permanent archive on every tier including free, backtesting with queue priority and fees, Parquet exports, and an MCP server. Pro is $29/mo.
Pick polymarketdata.co
You need order book data from before March 2026. polymarketdata.co's Ultra plan reaches back to August 2025 at 1-minute granularity, which is deeper history than the Marketlens archive start.
FAQ
Common questions
What is the best polymarketdata.co alternative?
Marketlens, if you need finer than 1-minute order book capture or backtesting. It records millisecond change-level L2 books for every recurring Polymarket market type, includes full archive access on every tier including free, and ships an open source Python SDK with execution-realistic backtesting, Parquet exports, and an MCP server. Pro starts at $29/mo versus $60/mo for the cheapest polymarketdata.co plan with order books.
Is there a free alternative to polymarketdata.co with order books?
Yes. The Marketlens free tier includes full L2 order book access with 5M events per day and the complete archive from March 2026. polymarketdata.co's free tier covers prices and volume only, without order books.
Does polymarketdata.co have backtesting?
As of August 2026 polymarketdata.co publishes no backtesting engine. Marketlens ships two backtest modes in its Python SDK: Alpha for signal research over long windows and Execution for tick level replay against real book depth with queue priority, latency, and fees.
How does polymarketdata.co pricing compare to Marketlens?
polymarketdata.co tiers: a free plan without order books, Trader at $60/mo with 1 month of history, Pro at $120/mo with 3 months, and Ultra at $360/mo with unlimited history. Marketlens has a free tier with full archive access and 5M events/day, Pro from $29/mo, and Enterprise at $199/mo. All Marketlens tiers query the same full archive.
Other alternatives: depthfeed.com, polyhistorical.com, pmdata.dev, polybacktest.com, polytest.io, or the full provider comparison.
Try it
Judge the data, not the marketing
The free tier includes 5M events per day with full API and full archive access, no card required. Pull a book, replay a market, run a backtest.
$ pip install marketlens