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defeatbeta-api
Open-source alternative to Yahoo Finance market data APIs
What it is
An open-source Python library positioned as an alternative to Yahoo Finance's market data APIs, with reliability as its stated goal. It provides stock market data that can be fed into strategy research and analysis code. Python developers and researchers looking for a free data source that does not break as often as unofficial endpoints are the intended users. As with any free data project, check coverage and data quality against your own needs before depending on it.
At a glance
Worth watchingOur rating, based on popularity, maintenance and how ready it is for real use.
| Best for | Developers |
|---|---|
| Used for | Data source, Data analysis |
| Markets | US equities, Multi-market |
| Stack | Python |
| Learning curve | Easy to start |
| Practical value | Medium practical value |
| Cost | Free and open source |
| Hardware | No GPU needed |
| Maintenance | Commits today |
GitHub stars, last 30 days
Daily snapshots since 2026-09-28 (up to 30 days): +34 over the period, now 791. Gaps mean no snapshot was taken that day.
An open-source alternative to Yahoo Finance's market data APIs with higher reliability.
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