Introduction
Version: 0.10.1 • Status: Production Beta • Public URL: wss://wsapi.fast.gemini.com
The Gemini Fast WebSocket API provides low latency access to real-time market data and order execution for professional traders and institutions. Built from the ground up for performance, Fast API delivers sub-10ms latency with enterprise-grade reliability.
Key Features
- Low Latency - Sub-10ms market data updates for competitive advantage
- Real-Time Trading - Place, modify, and cancel orders via WebSocket
- Multiple Streams - Subscribe to multiple markets simultaneously
Performance Tiers
| Tier | Target | Description |
|---|---|---|
| Tier 2 (Public Internet) | p99~15ms | Public offering connecting to AWS us-east-1 over the public internet. Provides good baseline performance with minimal setup complexity. |
| Tier 1 (In Region) | p99~10ms | Direct connection to us-east-1 feed. Provides improved performance a step above the public offering but requires onboarding to peer to our infrastructure. |
| Tier 0 (Local Zone) | p99~5ms | Best performance outside of NY5, physically closest to our data center. Requires onboarding similar to us-east-1. |
Please contact your account manager for onboarding to the Fast API high performance tiers.
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