Top 6 Cryptocurrency Data APIs: Comprehensive Comparison (2026)

Most developers building crypto tools make the same mistake. They grab the first API with a free tier, get it working, then six months later realize they're juggling three providers, paying for overlapping data, and still missing what they actually need. The right API depends on what you're building: A trading bot that reacts to live market moves A portfolio tracker spanning DeFi, wallets, and CEX balances A quantitative model that needs 10 years of clean OHLCV history An on-chain research dashb