Open Payments (CMS) vs SEC API (sec-api.io) comparison

Open Payments (CMS) focuses on Data APIs, APIs & SDKs, and Data Visualizations while SEC API (sec-api.io) specializes in Data APIs, Regulatory Filings Monitoring, and Insider Data. They overlap in 3 categories, so choose based on your preferred workflow and pricing.

Good news—both Open Payments (CMS) and SEC API (sec-api.io) offer free plans. You can try each platform without commitment and only pay when you need premium features.

Yes, both platforms offer API access for developers and quants who want to build custom integrations or automate their workflows.

Choose Open Payments (CMS) if you need Three core datasets each year: General Payments, Research Payments, and Ownership/Investment Interests., and Web search/explorer with filtering and charts; program year downloads available from the portal.. Go with SEC API (sec-api.io) if Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings., and Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN). better fits how you invest.

Both cover common asset types. Open Payments (CMS) also includes Other. SEC API (sec-api.io) adds coverage for Stocks, ETFs, Mutual Funds, and Funds.

SEC API (sec-api.io) offers real-time data feeds, which is essential for active traders. Open Payments (CMS) uses delayed or end-of-day data, which works fine for longer-term investors who don't need up-to-the-second quotes.

Open Payments (CMS) supports data exports to CSV, and JSON. SEC API (sec-api.io) has more limited export options.