Limitless prediction market data

Kalshi Eye records Limitless Exchange's central limit order books around the clock: every book update for every active market, plus a daily list of active markets, since October 15, 2026. Each UTC day is published the next morning as Parquet files.

Recorded since: October 15, 2026, every day, published the next morning.
Catalog: More than 900 series and 7,000 markets (October 2026). Browse them in Markets.
Completeness: every hour's recording, per venue, on Data coverage.
Access: daily Parquet through Downloads, S3 sync with aws, rclone or DuckDB, and the REST API.

Datasets

Dataset	What it holds	Plan	Free sample
Limitless order book `limitless_l2`	Every Limitless CLOB book update. Each message is a full book, stored as one row per price level.	Full book	Parquet · CSV
Limitless markets `limitless_markets`	Every active Limitless CLOB market seen during the day.	Explorer	Parquet · CSV

Series

16 Limitless series have their own page. The ones with the most markets:

All 16 Limitless series

Why this archive

An order book only exists as it is now; once it changes, the old book is gone. This archive keeps every Limitless book update, so depth, spreads and liquidity can be studied after the fact.

Reading the files

One file per market per day, named by the market's slug (ticker and series). Each Limitless message is a full book, stored as one row per price level: apply every row that shares a ts_recv as one snapshot, then discard the previous book.
An empty book is a single row with a null side.
The archive holds Limitless order books and market lists; it does not include Limitless trades.
Timestamps are nanoseconds UTC: ts_recv when we received the message, ts_venue when Limitless sent it.

One Limitless market's book at its last update of the day, in DuckDB (the file name carries the market's slug):

SELECT side, price, size
FROM 'kalshieye-data/limitless_l2/date=2026-10-20/series=<slug>/limitless_l2-<slug>-2026-10-20.parquet'
QUALIFY ts_recv = max(ts_recv) OVER ()
ORDER BY side, price DESC;

Plans

Explorer (free): Limitless markets.
Research ($79/month): Limitless markets.
Full book ($149/month): Limitless order book, Limitless markets.
Institutional: every dataset, with a commercial license. Talk to us.

Details and yearly prices are on Pricing.

Questions

How far back does the Limitless data go?

Recording started on October 15, 2026. Every day since then is in the archive, published the next morning, and the Data coverage page shows how much of every hour was recorded.

Does the archive include Limitless trades?

No. It has every Limitless order book update and the daily list of active markets, but not trades.

Can I try the Limitless data for free?

Yes. Every dataset has a free sample file, no account needed, linked in the table above. A free account downloads every dataset for the free sample days (the 1st of every month from November 2026), and the free Explorer plan downloads the last 30 days of Limitless market lists.

Is Kalshi Eye affiliated with Limitless?

No. Kalshi Eye is independent and not affiliated with Limitless. We record Limitless's public market data ourselves.