Kalshi has become the first prediction market to stream complete order books through the DoubleZero network, a breakthrough that gives institutional traders direct access to Level 1 and Level 2 data without the need to reconstruct the book from APIs. The integration, announced Wednesday, moves prediction markets one step closer to matching the transparency and speed expected by professional trading desks.

What DoubleZero Brings to Kalshi

The DoubleZero network is built to deliver low-latency, high-throughput market data, and Kalshi is now leveraging that infrastructure to provide participants with a real-time view of the full order book. Instead of cobbling together bids and offers from fragmented API calls, traders can now see the entire depth of the market as it updates.

This is a significant upgrade for Kalshi, which has traditionally catered to a broader retail audience. By routing order book data through DoubleZero, the platform is effectively signaling that it wants to serve serious quant funds, market makers, and other institutional players who demand raw market microstructure data.

The shift also removes a major technical bottleneck. Previously, accessing the full order book on a prediction market required custom API wrappers and frequent polling, which introduced latency and inaccuracies. Now, the data flows directly, making it easier to execute complex strategies around event contracts, interest rates, and economic indicators.

Why Level 1 and Level 2 Data Matter

For anyone unfamiliar with market data terminology, Level 1 data represents the top-of-book prices—the best bid and ask. Level 2 data goes much deeper, showing all pending orders at every price level. Together, they provide a complete picture of supply and demand at any given moment.

For institutional traders, Level 2 data is not just a nice-to-have; it is essential for assessing liquidity, spotting large hidden orders, and measuring market impact before placing trades. Without it, they are effectively flying blind. Kalshi’s move ensures that traders no longer have to rely on delayed or aggregated data to make split-second decisions.

A First for Prediction Markets

While traditional crypto exchanges and regulated futures venues have long offered full order book feeds, prediction markets have lagged behind. Kalshi’s integration with DoubleZero changes that dynamic, creating a new benchmark for transparency in the sector. It also raises the bar for compe*****s, who may now be forced to follow suit to retain institutional interest.

The timing is notable, too. As prediction markets gain traction as tools for forecasting everything from election outcomes to interest rate decisions, the demand for sophisticated market data is only expected to grow. Kalshi appears to be positioning itself to capture that wave.

Institutional Access Without the API Headache

Historically, institutional traders interested in prediction markets had to write custom scripts to query public APIs and incrementally build an order book image. That process was slow, error-prone, and often inefficient for high-frequency strategies. By streaming full order books directly, Kalshi eliminates that friction entirely.

The beauty of this approach is that it standardizes the data feed, giving all participants the same real-time information regardless of their technical resources. That levels the playing field and can increase confidence in the integrity of the market.

  • Direct Level 1 and Level 2 access enables immediate visibility into market depth.
  • No API reconstruction reduces latency and operational overhead.
  • Institutional-grade infrastructure makes prediction markets more attractive to professional traders.

This is more than a technical upgrade—it’s a strategic statement about where Kalshi sees the future of prediction markets. By embracing the same data standards used in traditional finance, the platform is helping legitimize the entire asset class.

Key Takeaways

  • Kalshi is the first prediction market to stream full order books via DoubleZero.
  • Institutional traders now have direct access to Level 1 and Level 2 data.
  • The move eliminates the need to reconstruct order books from APIs.
  • It signals growing maturity and institutional adoption in prediction markets.

As prediction markets continue to evolve, the ability to offer transparent, low-latency market data will be a major differentiator. Kalshi has just taken an important first step, and the rest of the industry will be watching closely.