Comparison

Eulerpool vs Polygon.io

The global alternative to Polygon. 90+ exchanges, fundamentals + macro + fixed income, MCP-native — free tier included.

Trusted by analysts and engineers at

BlackRockGoldman SachsJPMorganGoogleCitadelBridgewaterMorgan StanleyBloomberg

Side-by-side comparison

FeatureEulerpoolPolygon.io
Geographic focusGlobal, 90+ exchangesUS equities focused
PriceFree tier, from $99/mo$199/mo for real-time
Fundamentals✓Limited fundamentals
Fixed income✓Limited
Free tier✓Limited, delayed only
AI / MCP support✓None
Real-time✓✓
Asset classes✓Equities, options, forex

Why developers switch

Global coverage

90+ exchanges worldwide. Polygon is US equities focused.

Fundamentals + macro

Full fundamentals, fixed income, macro. Polygon has limited fundamentals.

Free tier

Free tier included. Polygon real-time starts at $199/mo.

MCP-native

Native MCP server for AI agents. Polygon has no MCP support.

Frequently asked questions

Yes. Eulerpool provides financial data via REST API with global coverage (90+ exchanges), full fundamentals, macro, and fixed income. Polygon is US-focused with limited fundamentals. Eulerpool also offers a free tier and native MCP support for AI agents.

Polygon charges $199/month for real-time data. Eulerpool offers a free tier (1,000 API calls/day) and paid plans from $99/month with real-time, fundamentals, and more asset classes. You can start at $0 and scale when ready.

Yes. Eulerpool is MCP-native with a Model Context Protocol server. Polygon has no MCP support. Eulerpool data is structured JSON, optimized for AI agents and Claude, Cursor, Windsurf.

Eulerpool covers 90+ exchanges globally — US, Europe, Asia, and emerging markets. Polygon is primarily US equities focused. Eulerpool also includes fixed income, derivatives, FX, macro, and commodities.

Eulerpool includes equities, fixed income, derivatives, FX, commodities, and macro data. Same asset classes as institutional providers, but with fundamentals and macro built in — unlike Polygon which has limited fundamentals.

BlackRock

“Eulerpool replaced three legacy data subscriptions in our equity research workflow. Migration took two days.”

Sarah Chen

VP Equity Research · BlackRock

Citadel

“Point-in-time data quality rivals CRSP at a fraction of the cost. We run all backtests on Eulerpool now.”

Dr. James Whitfield

Quantitative Researcher · Citadel

Goldman Sachs

“We migrated our entire data pipeline in 48 hours. The API is the cleanest I have worked with in finance.”

Marcus Rodriguez

Engineering Lead · Goldman Sachs

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