Gemini Launches Combo RFQ Sandbox Beta for Prediction Markets

Gemini has unveiled a sandbox beta feature for requesting unofficial quotes (RFQ) that bundles multiple prediction market contracts. Users can test the Combo RFQ WebSocket stream and quote methods in the sandbox, which includes an example RFQ of $50,000. The RFQ process is designed to be completed within 7 seconds, with market makers required to submit quotes within 1 second and requesters needing to decide on acceptance within 5 seconds. Once a requester accepts a quote, the market maker sends a final confirmation to complete the execution process. Combo contracts are products that bundle the outcomes of multiple events into a single trading unit, and Gemini's API provides order and cancellation pathways similar to a single contract. This beta does not replace the existing combo order book but adds functionality for unofficial quote competition. Gemini began its prediction market business after obtaining a CFTC DCM license on December 10, 2025, and it is currently available only to U.S. users. The figures regarding the increase in liquidity for Gemini RFQs have not yet been disclosed.

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