Overview
Discover the power of Prelude, the OTP and SMS verification API designed for developers. With cost-effective solutions and a robust anti-fraud system, Prelude is the perfect choice for authentication and verification needs.
Cost-Effective Solutions
Prelude offers cost-effective solutions for authentication and verification needs, with optimized SMS delivery and reduced costs.
Robust Anti-Fraud System
Prelude's anti-fraud system uses machine learning and advanced algorithms to prevent spam and abuse, ensuring high-quality routes and optimal deliverability.
High-Quality Routes
Prelude provides high-quality routes for optimal deliverability, with a network of over 20 leading global and local text-message providers.
Easy Integration
Prelude offers a simple and easy-to-use API for integration, with documentation and support available for developers.
Get started
- Open the official website and confirm the service is available in your region.
- Check the current plan, usage limits and terms for your intended use.
- Try a small task with sample data before committing to a paid plan.
Editorial note
Pricing checked: Sep 20, 2026. Pay-as-you-go pricing from €0.032 per verification plus pass-through carrier SMS costs (zero markup); Startup plan is €360/mo for dedicated SLA and custom Sender ID.
Record updated: Sep 20, 2026
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