EODHD vs Alpha Vantage

Bottom line: Alpha Vantage is the faster low-volume prototype; EODHD is usually the more natural starting point for a scheduled ingestion system that needs wider market coverage, corporate actions, and multiple datasets.

Integration shape

Alpha Vantage sends most calls to one /query endpoint and selects behavior with a function parameter. EODHD uses resource-oriented paths such as /api/eod/{ticker} and offers a larger family of specialized datasets.

Decision axis	EODHD	Alpha Vantage
Query model	Resource paths and endpoint families	Single query endpoint with function selection
Free allowance	20 calls/day; one-year EOD window	25 requests/day
Typical next step	Paid dataset plan	Premium throughput plan
Formats	JSON and CSV	JSON and CSV, depending on function
Best first test	Historical series plus a corporate action	Daily series plus one indicator or macro function

Where Alpha Vantage wins

For a notebook, classroom exercise, or tiny watchlist, its function-style interface is easy to inspect. Technical indicators and economic-series functions can reduce the amount of calculation needed in a prototype.

Where EODHD wins

Its catalog is better aligned with a product that expects to grow into scheduled global ingestion, ticker/exchange discovery, fundamentals, and corporate actions. The API still requires dataset-by-dataset entitlement review.

Do not benchmark only happy-path JSON

Test quota responses, invalid symbols, revised history, and adjusted versus raw prices. A provider can return syntactically valid JSON containing a throttle notice or metadata warning, so validate the expected data fields before writing a response to the master database.

Provider profiles

EODHD — source-backed facts and current verification notes
Alpha Vantage — source-backed facts and current verification notes