Grey (Grey.co) API vs Duplo API Comparison: Discover the best for Banking & Fintech in Nigeria

Grey (Grey.co) API is best for: African tech startups, creator platforms, and remote payroll companies needing automated virtual foreign bank accounts (USD/EUR/GBP) and frictionless NGN conversion.. Meanwhile, Duplo API is best for: African businesses, fintechs, SaaS platforms, and financial institutions that need a unified B2B payment operating system combining bulk payments, expense management, virtual accounts, FX, and NRS-compliant e-invoicing.. Your choice should align with whether your team prioritizes Grey (Grey.co) API's developer ecosystem or Duplo API's specific capability set.

Grey (Grey.co) API provides a dedicated sandbox testing environment and supports real-time webhooks. Duplo API offers sandbox testing and has webhook status unverified.

Grey (Grey.co) API pricing: Opening virtual international accounts (USD, EUR, GBP) is free. Receiving funds incurs a 0.5% 1% deposit fee depending on currency and rail (ACH/SEPA/Wire). Currency exchange spreads range from 0.8% to 1.5%. Local Naira payouts to Nigerian bank accounts are charged at a flat ₦35 ₦50 fee.. Duplo API pricing: Local cards: 1.5% capped at ₦1,200 ₦1,300. International cards: 3.8% 4.0%. Custom volume tiers for high-volume international processing. Free account available. Contact Duplo for enterprise pricing.. Both platforms offer tailored pricing structures for Nigerian transactions.

Grey (Grey.co) API uses API Key (Bearer Token in Authorization header) authentication with 100 requests per minute on standard sandbox; scalable on production. Duplo API uses API Key (dp_test_* for test mode, dp_live_* for live mode) authentication with Not publicly specified.