Twelve Data
twelvedata.com
Market data API for stocks, ETFs, forex, crypto and commodities on 250+ exchanges, with a free 800-request-a-day key and paid plans priced by credits.
What it is
Twelve Data sells market data through a REST API and WebSocket streams: more than 100,000 symbols across 250+ exchanges in over 90 countries, covering stocks, ETFs, forex pairs, crypto pairs and commodities, with real-time, historical and end-of-day prices, fundamentals and 100+ technical indicators calculated server-side. There are SDKs for Python, Go, C++, C#, Java and R, plus an MCP server for AI agents.
Plans are priced by API credits per minute rather than by data set. The free Basic key allows 8 credits a minute and 800 a day with real-time US equities, ETFs, forex and crypto, but no fundamentals and only trial WebSocket access. Grow adds fundamentals, 20+ markets and 377 credits a minute, still without production WebSocket. Pro adds 1,500 WebSocket credits, 70+ markets including real-time European stocks, and fixed income and fund data. Ultra covers all markets with the most credits and a 99.95% uptime SLA.
Two things to check before choosing. Individual plans are licensed for personal, internal, non-commercial use; showing the data in a product or to customers needs a business plan, priced separately. And streaming is a Pro-level feature: below Pro you poll the REST API within your credit limit. The API documentation we read showed no options chain endpoint, although the pricing page lists options among its features, so confirm with Twelve Data if you need options data.
Key features
- Multi-asset coverage
- Stocks, ETFs, forex (1,300+ pairs), crypto (1,900+ pairs) and commodities across 250+ exchanges in 90+ countries.
- REST and WebSocket
- REST on every plan; production WebSocket streaming starts on Pro with 1,500 credits, and Basic and Grow get trial WebSocket access only.
- Technical indicators
- 100+ indicators calculated by the API, so you do not have to compute them from raw prices.
- Fundamentals
- Company fundamentals from Grow up; Pro adds fixed income and mutual fund data, Ultra adds fund and ETF metrics and analysis data.
- SDKs and MCP server
- Official libraries for Python, Go, C++, C#, Java and R, and an MCP server for connecting AI agents.
Pricing
| Plan | Price | What you get |
|---|---|---|
| Basic | $0 | 8 credits/min, 800/day; real-time US equities, ETFs, forex and crypto; trial WebSocket |
| Grow | $79/mo or $790/yr | 377 credits/min, 20+ markets, fundamentals; trial WebSocket |
| Pro | $229/mo or $2,290/yr | 1,597 credits/min plus 1,500 WebSocket credits, 70+ markets |
| Ultra | $999/mo or $9,990/yr | 10,946 credits/min plus 10,000 WebSocket credits, all markets, 99.95% SLA |
Individual plans are for personal, internal, non-commercial use; business plans are priced separately. Annual billing saves about 17%.
Free option: A Basic API key with 8 credits a minute and 800 a day, real-time US equities, ETFs, forex and crypto, technical indicators and reference data, plus trial WebSocket credits. No fundamentals.
Checked September 25, 2026 on twelvedata.com. Prices change; confirm on the provider's site before you subscribe.
Strengths
- One API across stocks, forex, crypto and commodities worldwide
- Free key with real-time US equities and crypto for prototyping
- Server-side technical indicators save computation
- SDKs in six languages and an MCP server
Limitations
- 800 requests a day on the free plan is tight for anything beyond testing
- Production WebSocket streaming requires the $229 Pro plan
- Individual plans cannot be used commercially; business licensing costs extra
- Fundamentals are not included on the free plan
- No options chain endpoint appeared in the API documentation
Good fit for
- Developers who want one API for several asset classes
- Hobby projects and backtests that fit within the free daily limit
- Traders building spreadsheets or dashboards with international data
Look elsewhere if
- Options traders who need chains and Greeks (an options-focused API fits better)
- Commercial apps on a small budget, given the separate business licence
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Alternatives to Twelve Data
Twelve Data questions
Is Twelve Data free?
Yes, the Basic plan is free with 8 API credits a minute and 800 a day, including real-time US equities, ETFs, forex and crypto.
How much does Twelve Data cost?
Grow is $79 a month, Pro $229 and Ultra $999, with about 17% off when billed yearly. Business use is priced separately.
Does Twelve Data have WebSocket streaming?
Basic and Grow get trial WebSocket credits only. Production streaming starts on Pro with 1,500 WebSocket credits.
Can I use Twelve Data in a commercial app?
Not on an individual plan, which is limited to personal, internal, non-commercial use. Commercial use needs a business plan.
Written from Twelve Data's own website and documentation. All Trading Tools lists and compares tools; it does not recommend trades or give financial advice. Sources: twelvedata.com, twelvedata.com/pricing, twelvedata.com/docs.