Which crypto data delivery model fits your backtest?

Current source-backed snapshot

This is not a universal best-API ranking. It compares four documented delivery models: CoinNudge processed event evidence, CoinGecko broad market discovery, Tardis.dev exchange-native replay and Kaiko institutional normalized products. The narrower scope lets a buyer compare authentication, history, timestamp semantics, evaluation access and contract boundaries without implying that four providers represent the entire market.

Input documentation: Tardis.dev documentation · Kaiko data versioning · CoinGecko authentication · CoinNudge API documentation

Observation window: Documentation checked 2026-09-14

Calculation cadence: Auto-refresh about every 86400 seconds

Calculation version: documented-api-capability-comparison-2.0

Download current dataset: JSON · CSV Raw values retain the dataset's published precision. Free fair-use limit: 60 requests per minute per IP, shared across all Research JSON and CSV endpoints.

This is a documented data-model comparison, not a completeness, latency, price, SLA, redistribution-rights or provider-quality benchmark. Plans and endpoints change; verify official documentation and contract terms before purchase.

How to read this page

• Which data delivery model matches my crypto research question and audit requirements?
• Capabilities and plans change; this page is not a complete price, exchange-coverage, SLA or license comparison.
• Inspect the table before relying on the summary.
• JSON and CSV preserve the published evidence.

What can this page tell you quickly?

Question answered

Which data delivery model matches my crypto research question and audit requirements?

Measured scope

Provider documentation checked 2026-09-14

Update schedule

Recalculated about every 24 hours from stored source observations.

Do not infer

Capabilities and plans change; this page is not a complete price, exchange-coverage, SLA or license comparison.

Why choose by research job first?

A broad price API can answer which assets exist but may not reconstruct order-book messages. Exchange-native replay can support microstructure research but leaves derived event labels to the user. A PIT event dataset can answer what was known when without replacing a multi-year tick archive.

Writing the intended output—factor backtest, event study, market replay or dashboard—prevents paying for a technically impressive feed that does not answer the actual question.

Which timestamp questions should a buyer ask?

Ask whether event time, vendor observation time and ingestion time are separate; whether corrections overwrite history; and whether historical backfills are distinguishable from contemporaneously recorded records.

A timestamp in a row is not automatically point-in-time evidence. Backtests need the availability time of every feature, not only the time the underlying market event occurred.

What should I test before signing a data contract?

Request sample rows for the exact venue, instrument and period. Recompute row counts, gaps and one headline metric. Confirm rate limits, bulk export formats, schema revisions, retention, redistribution terms and support response boundaries.

For CoinNudge, public Research JSON/CSV is an evaluation layer; fixed paid access currently covers the disclosed Market Events product, while broader custom families require a scoped review.

How can I verify and cite this result?

Download the page JSON for the complete snapshot and CSV for tabular evidence. Record the API dataset key `market-data-api-comparison`, the returned calculation_version, observation interval and named source alongside any quoted number. The visible table rounds values for readability; the downloads retain the published precision.

The stable URL remains unchanged when the data refreshes. A new calculation time does not prove every input changed, so compare source-observed timestamps and the stated provider documentation checked 2026-09-14. Missing rows remain missing rather than becoming zero or a favorable estimate.

What is measured, and what is not?

Method and data boundary

Compare only capabilities stated in named provider documentation as checked on 2026-09-14. Separate current API access, historical delivery, version or PIT semantics and self-service evaluation. Do not infer undocumented coverage, latency, licensing rights or total cost from a marketing label.

Capabilities and plans change; this page is not a complete price, exchange-coverage, SLA or license comparison.

Read the complete CoinNudge methodology

Sources and verification

• Tardis.dev documentationCurrent historical file and replay documentation.
• Kaiko data versioningDocumented version parameter semantics.
• CoinGecko authenticationDemo and Pro API key requirements.
• CoinNudge API documentationPublic Research and paid delivery boundaries.

Frequently asked questions