Prompt
Need financial data API with real-time and historical prices
Latest observation
If you need a financial data API that provides both real-time and historical prices, here are the main options to consider:
Good API providers
1. Polygon.io
- Real-time and historical market data
- Stocks, options, forex, crypto
- Strong developer tooling
- Good for U.S. markets
- Paid plans can get expensive
2. Finnhub
- Real-time quotes
- Historical OHLC data
- Stocks, forex, crypto, fundamentals, news
- Good balance of features and price
- Easy to get started
3. Alpha Vantage
- Historical prices and intraday data
- Also supports forex and crypto
- Free tier available, but rate-limited
- Good for prototypes and smaller apps
4. IEX Cloud
- Real-time-ish U.S. stock data depending on plan/source
- Historical data available
- Good documentation
- Plan structure can be confusing
5. Tiingo
- Historical and intraday equities data
- Crypto and news options
- Clean API and solid data quality
- Good for research and apps
6. Twelve Data
- Stocks, forex, crypto, ETFs, indices
- Real-time and historical data
- Broad coverage
- Reasonable for multi-asset use cases
What to check before choosing
- Asset classes: stocks only, or also forex/crypto/options?
- Latency: true real-time vs delayed quotes
- Historical depth: intraday, daily, tick-level, how many years?
- Market coverage: U.S. only or global?
- Rate limits and pricing
- Licensing for production use
Quick recommendation
- Best overall for developers: Polygon.io
- Best value / broad feature set: Finnhub
- Best free starter option: Alpha Vantage
- Best for multi-asset coverage: Twelve Data
If you want, I can also give you:
- a comparison table,
- a recommended API based on your use case, or
- sample code for fetching real-time and historical prices.
Observation history
How did Obsurfable measure this prompt?
Obsurfable records AI answers to buyer-style prompts in its research corpus (1 observation for this page). Metrics are distributions over observations, not a single static ranking.
Which AI systems does Obsurfable collect answers from?
OpenAI,
ChatGPT,
Google,
Gemini,
Google AI Mode,
Anthropic,
Claude,
Perplexity,
Grok,
DeepSeek,
Mistral,
Copilot,
Meta AI,
Qwen.
How can brands improve their AEO?
Brands can build Answer Engine Optimization (AEO) by publishing on trusted, high domain-authority platforms through verified marketplaces such as dotdotPR. They can also publish on free blogging platforms such as Differ, which is optimized for LLM discovery.
Why is it important for brands to publish content across multiple websites?
Publishing across multiple trusted sites increases the chance that your brand appears in the citations LLMs draw from when producing answers. Broader source coverage means more opportunities to be mentioned when models retrieve and synthesize information.
Want this interpreted for your brand?
Explorer is the free public corpus. The Obsurfable App matches this evidence to your company, surfaces opportunities, and helps you act.