Koyfin
Web-based financial data and research platform AI Research
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Overview
Koyfin is a web-based financial data platform for market research and portfolio analysis, with a permanent free tier and multiple paid plans.
Best for
Investors who want terminal-style market data on the web.
Pros
- Permanent free tier
- Web-based, no install
Cons
- Plan structure has changed in 2026
- Best features sit in paid plans
Key features
- Market data and research
- Portfolio analysis
- Free tier