As of September 2026. Competitor prices: check Alpha Vantage.
Alpha Vantage is a developer-first market data API known for a free hobbyist key and paid API plans. Vantafin is an investing app with the same books behind REST, WebSocket, and 23 MCP tools. Pick Alpha Vantage to wire quotes into a script. Pick Vantafin when you also need filings, a screener, and cited AI Chat.
| Criteria | Vantafin | Alpha Vantage |
|---|---|---|
| Primary product | Research app, REST, WebSocket, MCP | REST market-data API |
| Web research UI | Profiles, screener, charts, alerts, AI Chat | Documentation and API console, not a terminal |
| Filings & transcripts | SEC filings since 1994, earnings transcripts | Limited relative to a filings-first product |
| AI / agents | AI Chat plus 23 typed MCP tools | API you call from your own agent |
| Pricing model | Free; Pro $25/mo or $20/mo annual; Ultimate $50/mo or $40/mo annual | Free hobbyist key plus paid API plans; check their site |
| Best for | Retail investors and builders who want one research app plus the same dataset over REST, WebSocket, and MCP. | Builders who want a cheap quote and fundamentals API |
You want one subscription for company profiles, 80+ screener metrics, filings back to 1994, and an API you can also open in the browser.
you only need a lightweight REST key for quotes or a weekend project and will not use a research app.
Alpha Vantage earned its reputation as an approachable first API. Rate limits and dataset depth vary by plan. We do not publish their current dollar prices here because they change; confirm on alphavantage.co. As of September 2026, Vantafin is not trying to be a drop-in clone of their endpoint list.
Sometimes, not always. Use Vantafin when you want cited research, filings, a screener, and APIs in one subscription. Stay with Alpha Vantage when you only need a hobbyist REST key and will not use a research UI.
Vantafin is free to start. Pro is $25/month or $20/month billed annually. Ultimate is $50/month or $40/month billed annually. Alpha Vantage prices change; check their site rather than a cached third-party list.
Choose Vantafin if you want filings, a 12K+ equity screener, cited AI Chat, and MCP on the same plan as the web app.
Yes. Plenty of people keep Alpha Vantage for the job it already does well and add Vantafin for filings, an 80+ metric screener, cited AI Chat, or an official REST/MCP key. You do not have to pick only one.
Yes. REST and 23 typed MCP tools ship on Pro. WebSocket streaming is Ultimate only. The same books sit behind the web app. See pricing.
Free covers delayed quotes, 20K+ company profiles, SEC filings since 1994, limited charting, and one watchlist. No card required. Live quotes on 9,000+ tickers, AI Chat, REST, and MCP start on Pro.
Alpha Vantage prices change and are often not listed the way a self-serve SaaS page is. We keep their cost qualitative. Confirm on their site. Vantafin prices here are current as of September 2026.
Read the pricing page for plan limits, the alternatives hub for other fits, or what a financial data API is if you are evaluating developer access.
No. Alpha Vantage is a developer-first REST API with docs and a console. Vantafin is a research app that also ships REST, WebSocket, and MCP. If you need a browser workflow, Alpha Vantage is the wrong shape of product.
No. As of September 2026, Vantafin is not a drop-in replacement for their route list. Compare fields you actually need, then confirm both docs.
Free to start. $20 or $40 a month unlocks live data, AI chat, and full API access.