Aperiodic
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Get a free API key

Pricing

Start free with every metric for 2025 on BTC, ETH, SOL and 10 RWA perps. A plan adds years of history, every perp and real time, on the same API key.

Free
Personal licence

Every metric for 2025 on BTC, ETH, SOL and 10 RWA perps, on an API key of your own.

Get a free API key$0No cardOr start with your AI agent
API: your own key
  • Every metric dataset, all of 2025
  • BTC, ETH, SOL and 10 RWA perps: SanDisk, Nvidia, Gold, SK hynix, WTI crude oil, Micron, Silver, Nasdaq 100, S&P 500, Tesla
  • Raw trades for the BTC perpetual on Binance and OKX, June 2025
  • 1,000 requests a day
  • The same key when you upgrade
On the site, 15 min behind
  • Cost Index
  • Depth Index
  • Impact Index
  • The markets dashboard
Pro
Personal licence

For independent researchers backtesting order flow

Get started$199.00/month · +VAT
  • Cost Index with Prime
  • Depth Index with Prime
  • Impact Index
  • MarketDerivativesTradesL1 Price
    The other 4 for 2025, on Free's markets
  • 5 years of history
  • Intervals
    1m5m15m30m1h4h1d
  • Real-time metric stream
  • API (High Rate Limits)
Prime
Personal licence

For quants who need every metric, order book included

Get started$399.00/month · +VAT
  • Cost Index
  • Depth Index
  • Impact Index
  • MarketDerivativesTradesL1 bookL2 book
  • Full history
  • Intervals
    1m5m15m30m1h4h1d
  • Real-time metric stream
  • API (No Rate Limits)
Prime Commercial
Commercial licence

For funds and trading teams using every metric in-house

Get started$799.00/month · +VAT
  • Cost Index
  • Depth Index
  • Impact Index
  • MarketDerivativesTradesL1 bookL2 book
  • Full history
  • Intervals
    1m5m15m30m1h4h1d
  • Real-time metric stream
  • API (No Rate Limits)
Everything in Prime + Raw, plus

Institutional data licensing for funds, prop shops, and trading desks

Real-time streamingLive metrics into your production systems
Negotiated SLAUptime, delivery times and support agreed with your desk
Sub-minute intervals15s / 30s — exclusive to Institutional
Licence on your termsScope, seats and entities agreed with your compliance team
Custom deliveryREST API, S3, your cloud or on-prem
Proof of conceptA historical time slice to test before you sign
AUM-based pricing · PoC availableRead the standard SLA
See everything included in Institutional
  • Everything in Prime + Raw
  • Negotiated SLA & dedicated support
  • Real-time metric streaming
  • Sub-minute intervals (15s / 30s)
  • Commercial licence on negotiated terms
  • REST API, S3 & custom delivery channels
  • Deployment in your cloud or on-prem
  • AUM-based pricing
  • Proof of Concept: historical time slice
Prime + Raw · Commercial licence

The raw data behind the metrics

Everything in Prime Commercial, plus raw trades, top-of-book quotes, mark and index prices and funding for Binance, OKX and Hyperliquid perpetuals. Full history, updated daily.

$1,499/month · billed yearly · +VAT

Compare plans

Hover or tap any underlined feature to see what it covers.

Plan comparison
Feature
Free$0Get a free API keyNo card
Pro$199/moGet started+ SLA & sub-minute bars with Institutional
Prime$399/moGet started+ SLA & sub-minute bars with Institutional
Prime Commercial$799/moGet started+ SLA & sub-minute bars with Institutional
InstitutionalCustomContact UsSLA & sub-minute bars included
IndicesThe index pages are free, 15 minutes behind. Through the API, an index needs a plan that includes every column it reads.
On the siteNot includedIncludedIncludedIncluded
On the siteNot includedIncludedIncludedIncluded
On the siteIncludedIncludedIncludedIncluded
MetricsPre-computed microstructure metrics for Binance, OKX and Hyperliquid perpetuals. Every plan, Free included, has every dataset for 2025 on BTC, ETH, SOL and 10 RWA perps; a plan adds the years around it and every other perp. Open a category to see its datasets.
2025IncludedIncludedIncludedIncluded
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More on Market Data
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2025IncludedIncludedIncludedIncluded
More on Derivatives
2025IncludedIncludedIncludedIncluded
2025IncludedIncludedIncludedIncluded
2025IncludedIncludedIncludedIncluded
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2025IncludedIncludedIncludedIncluded
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More on Trades
20251 of 3IncludedIncludedIncluded
2025IncludedIncludedIncludedIncluded
20252025IncludedIncludedIncluded
20252025IncludedIncludedIncluded
More on L1 — Top of Book
20252025IncludedIncludedIncluded
20252025IncludedIncludedIncluded
20252025IncludedIncludedIncluded
More on L2 — Order Book
Raw dataThe tick-level data behind the metrics, as daily Parquet files for Binance, OKX and Hyperliquid perpetuals.
SampleNot includedNot includedNot includedIncluded
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Raw L2 order books are not offered. Tell us what you need
Coverage & delivery
BTC, ETH, SOL and 10 RWA perpsEvery perpEvery perpEvery perpEvery perp
20255 yearsFull historyFull historyFull history
1m5m15m30m1h4h1d
1m5m15m30m1h4h1d
1m5m15m30m1h4h1d
1m5m15m30m1h4h1d
15s30s1m5m15m30m1h4h1d
Fixed yearDaily + real-timeDaily + real-timeDaily + real-timeDaily + real-time
Not includedIncludedIncludedIncludedIncluded
1,000 a dayHighNoneNoneNone
API, SDK & CLIAPI, SDK & CLIAPI, SDK & CLIAPI, SDK & CLIAPI, SDK, CLI + S3, your cloud
IncludedIncludedIncludedIncludedIncluded
Licence & support
PersonalPersonalPersonalCommercialCommercial, negotiated
DocsEmailPriority chatPriority chatDedicated
Not includedNot includedNot includedNot includedIncluded
Not includedNot includedNot includedNot includedIncluded
No cardCard, monthly or yearlyCard, monthly or yearlyCard, monthly or yearlyInvoice, AUM-based
Aperiodic

Built from hundreds of terabytes of raw data and distilled into point-in-time metrics you can pull as parquet files. Plus the raw trades, quotes and derivatives data behind them.

Use Cases
  • Improve your backtest
  • Find new alpha
  • Execute smarter
Indices
  • All indices
  • Aperiodic Cost Index
  • Aperiodic Depth Index
  • Aperiodic Impact Index
Metrics
  • Metrics library
  • Data Catalog
  • Live markets dashboard
  • Global Liquidity
  • Unusual activity
  • Order Flow
  • L1 & L2
  • Derivatives
  • RWA
  • Raw Data
Developers
  • Docs
  • API Docs
  • MCP Server
  • Notebooks
  • For AI Agents
  • Atlas Security Master
  • Pre-flight
  • Changelog
  • Roadmap
  • llms.txt
Learn
  • Replays
  • Microstructure Guide
  • Architecture
  • Research Blog
  • FAQ
Compare
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136 Capel Street, Dublin D01 T2C9, Ireland