FlashAlpha

FlashAlpha is a pre-computed options analytics API for quant developers and systematic traders. We deliver live GEX (gamma exposure), volatility surfaces, dealer exposure, IV rank, and all 15 Greeks across 6,000+ US equities and ETFs — updated every 15 seconds via REST API. Built for developers who want the analytics layer, not the raw data. One API call returns what would otherwise take hours of computation. Free tier available with no credit card required. SDKs for Python, JavaScript, C#, Go, and Java.