Catalayer vs Polygon.io
Polygon.io delivers institutional-grade stock market data. Catalayer focuses on the news and intelligence layer — real-time financial news with AI classification.
Polygon.io is a leading stock market data API providing real-time trades, quotes, aggregates, and options data. Catalayer serves the news aggregation layer: financial news monitoring, AI event classification, and keyword monitoring — complementary to Polygon rather than competitive.
Feature Comparison
| Feature | Polygon.io | Catalayer |
|---|---|---|
| Real-time trades, quotes, OHLC | Yes (industry-leading) | No — Catalayer covers news, not price data |
| Options data | Yes | No |
| News aggregation | Basic (Polygon news endpoint) | Yes — 50+ sources, sub-60s, AI-classified |
| AI event classification | No | Yes — event type, directional impact, relevance 0-100 |
| Keyword monitors + alert delivery | No | Yes — boolean Monitor |
When Each Wins
When Polygon.io wins
- You need tick-level trades, quotes, and order book data
- You need options data, forex, or crypto prices
When Catalayer wins
- You need real-time financial news with AI event classification
- You want keyword monitors and alert delivery on news events
Migration / Coexistence
Polygon.io and Catalayer are highly complementary — Polygon for price/market data, Catalayer for news and intelligence.
FAQ
Can Catalayer replace Polygon.io?
No — they serve different purposes. Polygon provides market microstructure data. Catalayer provides financial news, AI event classification, and keyword monitoring. They are designed to be used together.