VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
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Thursday, May 28, 2026
Tool Comparison · Thursday, May 28, 2026
Open Payments (CMS) vs OpenCorporates
Open Payments (CMS) vs OpenCorporates: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
Open Payments (CMS)
openpaymentsdata.cms.gov
Best for apis & sdks, and data visualizations
- Pricing
- Free
- Platforms
- Web, API
OpenCorporates
opencorporates.com
Best for other
- Pricing
- Free
- Platforms
- Web, API
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
Open Payments (CMS) if…
- You need three core datasets each year: general payments, research payments, and ownership/investment interests.
- You need web search/explorer with filtering and charts; program year downloads available from the portal.
- You need open data api (oda) for programmatic access with filtering, querying, and aggregation (soql‑style).
- You need publication cadence: initial annual publication on/around june 30 for the prior year, plus refresh publication after the calendar-year-end review/re-attestation cycle.
Choose
OpenCorporates if…
- You need public api portal advertises 200m+ company records, aggregated from official registries with provenance and source links.
- You need versioned rest api with json (default) or xml output; api keys required. free tier provides up to 200 requests per month (50 per day).
- You need openrefine reconciliation api allows entity-matching from company names to legal identifiers.
- You need enterprise bulk access via sftp, with six structured csv datasets (companies, officers, non-registered addresses, alternative names, additional identifiers, and relationships).
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | Open Payments (CMS) | OpenCorporates |
|---|---|---|
Asset types | Other | Other |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | North America | North AmericaEuropeAPACLatAmMiddle EastAfrica |
Data freshness | End of Day | End of Day |
API access | REST | REST |
Export formats | CSVJSON | CSVJSON |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
Open Payments (CMS)
—
Starting price
Plans & pricing
Tool
OpenCorporates
—
Starting price
Plans & pricing
Coverage overlap
Categories where both tools offer overlapping coverage.
Categories covered by Open Payments (CMS) only.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between Open Payments (CMS) and OpenCorporates?
Open Payments (CMS) focuses on Data APIs, APIs & SDKs, and Data Visualizations while OpenCorporates specializes in Data APIs, Regulatory Filings Monitoring, and Other. They overlap in 2 categories, so choose based on your preferred workflow and pricing.
How much do Open Payments (CMS) and OpenCorporates cost?
Good news—both Open Payments (CMS) and OpenCorporates offer free plans. You can try each platform without commitment and only pay when you need premium features.
Do Open Payments (CMS) and OpenCorporates have APIs?
Yes, both platforms offer API access for developers and quants who want to build custom integrations or automate their workflows.
Should I choose Open Payments (CMS) or OpenCorporates?
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 OpenCorporates if Public API portal advertises 200M+ company records, aggregated from official registries with provenance and source links., and Versioned REST API with JSON (default) or XML output; API keys required. Free tier provides up to 200 requests per month (50 per day). better fits how you invest.
Can I export data from Open Payments (CMS) and OpenCorporates?
Both platforms let you export data to spreadsheets (CSV, and JSON). This is useful for custom analysis or record-keeping.
Other tools you might like
These profiles share overlapping coverage with both sides of this matchup.
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Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.