Finnhub review

Finnhub sells financial-data APIs for stocks, currencies, crypto, and global markets. Its REST APIs and WebSocket access are aimed at developers building research tools, market-data products, or other applications that need company and trading data.

The catalog covers market data and company fundamentals, with the homepage listing financial statements going back more than 30 years. It also includes analyst estimates, ETF and fund information, earnings transcripts, and alternative data such as news and social sentiment, ESG data, congressional trades, and lobbying.

There is a free plan for personal use and basic US data. The global All-In-One plan is listed at $3,500 per month, billed annually, with no monthly billing option shown. That price puts Finnhub in a different category from a casual free API, even if the free tier is enough to assess basic US coverage.

Finnhub’s main advantage is breadth: one API provider lists market, fundamental, analyst, ETF, transcript, and alternative data. That can reduce the number of separate feeds a team needs to evaluate, especially if its product combines company research with market data.

The homepage lists global company statements going back 30+ years, historical and future analyst estimates, price targets, and earnings notifications. ETF, mutual fund, and index data includes profiles, holdings, and historical constituents. Finnhub also lists 15+ years of earnings call transcripts with downloadable audio, alongside news and social sentiment, ESG, congressional-trade, and lobbying data.

The free plan has concrete uses for smaller projects: according to the pricing page, it includes 60 API calls per minute, US coverage, real-time company news with one year of history, 50 WebSocket symbols, and four quarters of EPS surprises. The paid plan raises the listed limits to 900 market-data calls and 300 fundamental-data calls per minute, adds global coverage, and allows unlimited WebSocket symbols. Those are useful distinctions to check against your actual endpoints and traffic needs before switching.

The price is the obvious barrier. The All-In-One plan costs $3,500 per month when billed annually, according to the pricing page, and no monthly billing option is listed. That is a steep commitment if you only need a narrow slice of the catalog. Earnings transcripts are not included; Finnhub says to contact it for an add-on price, which is not published.

The free plan is also tightly scoped: US coverage, 60 calls per minute, 50 WebSocket symbols, and only four quarters of EPS surprises. The pricing page does not publish a free trial or a price for the transcript add-on.

Reliability and coverage deserve checking before you build around the API. Users in one Reddit thread reported non-US symbols becoming unsupported and datasets moving from free to paid; another user said they saw gaps in time-series data. A commenter in a separate investing thread called Finnhub unreliable and inaccurate. These are user reports, not a representative audit, but they make it sensible to verify the specific symbols, history, and endpoints your application depends on.

Finnhub has a free plan for personal use and basic US data, then an All-In-One plan listed at $3,500 per month. That is a jump from $0 to $3,500 monthly for teams that need global coverage; there is no intermediate paid tier in the published pricing details.

The Free plan includes 60 API calls per minute, US coverage, one year of company news with real-time updates, 50 WebSocket symbols and four quarters of EPS surprises. All-In-One is billed annually at $3,500 per month, with no monthly billing option listed. It raises the limits to 900 market-data API calls and 300 fundamental-data API calls per minute, adds global coverage and 30-plus years of standardized financial statements, and removes the WebSocket symbol cap.

Check the transcript cost before budgeting: earnings call transcripts are excluded from All-In-One, and Finnhub does not publish the add-on price. The listed price is therefore not the full cost for transcript users.

Finnhub offers REST APIs and WebSocket access, but the published material does not describe migration tools, export formats, or a compatibility layer. Before switching, inventory the endpoints, data fields, update frequency and symbol coverage your application depends on; confirm that the plan covers them. The Free plan is US-only and caps WebSocket use at 50 symbols, while All-In-One includes global coverage and unlimited WebSocket symbols.

Leaving requires checking how your team will replace those feeds and whether your own systems retain the history they need. The published sources do not say whether Finnhub offers bulk exports or how cancellation affects access to historical data, so confirm both with the company before committing to an annual plan. We also have no Reddit posts or comments in the published material, so we can’t attribute a reason for leaving to users. The transcript add-on’s unpublished price is a documented budgeting gap, not evidence of why customers switch.