Open-weight AI market share (OpenRouter) is a weekly science and technology series on Kalshi, with markets like “Open source token share Oct 19–25 (OpenRouter)?”. The Kalshi Eye archive lists 22 of its markets and has 3 days of daily Parquet files from October 22, 2026 to October 24, 2026 (526 KB), with every order book change and trade.

Venue: Kalshi, series KXOPENSOURCESHAREOR
Category: Science and Technology, weekly
Markets: 22 (0 settled, 22 open)
Files: 3 days, October 22, 2026 to October 24, 2026, 526 KB, 53,632 rows
Datasets: Order book (L2, incremental), Order book snapshots (top 10, 1 second), Top of book (every change), Top of book (1-minute bars), Trades

Open Open-weight AI market share (OpenRouter) in Markets to see every day and market, then export the days you need. Free sample files of each dataset are on the Kalshi data page.

Reading the files

Every KXOPENSOURCESHAREOR trade on October 24, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-24/series=KXOPENSOURCESHAREOR/trades-KXOPENSOURCESHAREOR-2026-10-24.parquet'
ORDER BY ts_recv;

To test a strategy on this series, see How to backtest Kalshi markets.

Related Kalshi series

Google Vercel requests share (KXGOOGVREQ): 169 markets, 13 days of files
Moonshot AI Vercel spend share (KXMOONVSPEND): 169 markets, 13 days of files
DeepSeek Vercel requests share (KXDEEPVREQ): 168 markets, 13 days of files
Anthropic Vercel spend share (KXANTHVSPEND): 167 markets, 13 days of files
Anthropic Vercel requests share (KXANTHVREQ): 166 markets, 13 days of files
Open weights AI market share (KXOPENSOURCESHARE): 161 markets, 13 days of files

Figures as of October 25, 2026. All Kalshi series with pages are listed on Kalshi series.