# Tardis.dev vs 0xArchive Two archives for a Hyperliquid backtest. One reaches 18 months further back for 49 dollars; the other is the one that also has the venue you hedge on. *https://cryptomarkets.tools/compare/tardis-dev-vs-0xarchive* - https://cryptomarkets.tools/tools/tardis-dev.md - https://cryptomarkets.tools/tools/0xarchive.md ## Two archives, one question The reader here has a strategy that trades on Hyperliquid and needs the book and the tape to replay it against. Both cards above sell that. [CoinAPI](https://cryptomarkets.tools/tools/coinapi) and [Laevitas](https://cryptomarkets.tools/tools/laevitas) carry Hyperliquid too, but these two are the archives built to be replayed, and the pair a reader of [market data APIs](https://cryptomarkets.tools/categories/market-data-apis) ends up stuck between. The cards already say which is broader and which is deeper. What they cannot say alone is what a given backtest costs on each, because the two vendors put the price on different axes. - **[Tardis.dev](https://cryptomarkets.tools/tools/tardis-dev)** prices by **data plan, access type and billing interval**. A plan is a slice of venues — Perpetuals at 700 dollars a month on Solo, which is CSV files only; the replay API starts at Professional, 1,000 dollars. The billing interval then decides how far back you may reach: four months on monthly billing, twelve on quarterly, four years on yearly. - **[0xArchive](https://cryptomarkets.tools/tools/0xarchive)** prices by **rows and gigabytes**. Every plan, free included, calls every route; the plans change capacity. Build at 49 dollars is the first with the full archive and 80 million credits, with REST history charged at 1,000 rows of L2 or trades per credit. Bulk ranges are Parquet at 3 dollars a gigabyte for L2 books and 4 for trades, with no subscription at all. ## What a full Hyperliquid history costs on each This is the calculation neither card makes, because it needs both of them. Both vendors let you keep what you downloaded. Tardis.dev's terms say downloaded data stays licensed to you permanently, trial data included; 0xArchive's say data downloaded while entitled stays usable after cancellation. So the honest price of an archive is the cheapest subscription that can reach all of it once. On 0xArchive that is one month of Build: 49 dollars, and the archive back to April 2023 is in range on day one, metered by rows rather than by months. On Tardis.dev it is not one month of anything. Hyperliquid's feed there starts on 29 October 2024 — 23 months before this page — and monthly billing reaches four months back, quarterly twelve. Only yearly billing reaches the start, on a Perpetuals plan quoted from 700 dollars a month for CSV and 1,000 for the replay API. The Academic tier at 350 would be cheaper and is quarterly or yearly only, and the order form has marked it temporarily unavailable since 19 September 2026. The gap is two orders of magnitude, and it is the right gap for the reader who trades one venue. It is the wrong comparison for anyone else, because the 700 dollars buys something the 49 does not. ## What the cheap one does not have **A second venue.** 0xArchive covers Hyperliquid and Lighter and nothing else — no centralised exchange, no other DEX. A strategy that hedges on Binance, prices off a centralised reference, trades a basis or measures who moves first needs both books on the same clock, and on 0xArchive that is a second vendor. Tardis.dev lists 64 feeds, 52 still collecting, with Binance alone split across seven ids from spot to COIN-M futures — the plan you buy is a slice of those, so check the venue you hedge on is in the slice. Every row is stamped twice in microseconds, the venue's own timestamp and the arrival time at Tardis.dev, which is what lets you tell venue latency from collection latency when two books are being lined up. **Full depth before March 2026.** 0xArchive's "since April 2023" is true of the native top-20 L2 book and of trades over REST. Full depth and the L4 book of individual orders start on 11 March 2026, candles in March 2025, liquidations in December 2025, and trades sold as files only from March 2025, because the vendor calls earlier fill history incomplete. The Tardis.dev card does not record how deep its Hyperliquid book goes. Its free first-of-month file answers that for nothing: download 1 November 2024 and count the levels before you pay for a year. **A track record.** 0xArchive's operator dates from 2025, names no founder or employee, gives a PO box, and caps liability at a year of fees. Tardis.dev's archive keeps venues that have shut — FTX end to end, dYdX v3, AscendEX — which is the kind of continuity a buyer of history is paying for. Whichever you choose, keep your own copy: both licences let you. ## What the expensive one does not have **A licence for shipping something.** Tardis.dev permits internal, task-specific models and forbids training any other model, or selling or licensing one built on the data, even one that retains nothing reconstructable; [redistribution](https://cryptomarkets.tools/glossary/redistribution) is limited to OHLC candles of ten minutes or longer. 0xArchive lists model training, dashboards and customer-facing products as permitted where the output materially transforms the data. Raw resale is barred on both, and 0xArchive wants written permission for benchmarks, indices and financial products. **A live feed.** Tardis.dev sells history only; its clients stream live from the exchanges for free. 0xArchive streams live over the same WebSocket it replays on — at up to one credit per message, so a default-rate book subscription on one symbol can spend the free plan's 50,000 credits in under fourteen hours. **Deployment room below the top tier.** Below Business, Tardis.dev gives one key, usable from one source IP at a time, with 3,000 requests a minute per account however many containers you run. ## Which one, and when **Take 0xArchive** if the strategy lives on Hyperliquid or Lighter alone. Build at 49 dollars reaches eighteen months more history than the alternative, at a small fraction of its price, under a licence that lets you ship what you build. Plan around top-20 depth before 11 March 2026, check `coverage_by_type` for the exact data type and symbol, and save a copy you control. **Take Tardis.dev** the moment the research needs a second venue on the same clock, or a dead one. Buy the Perpetuals plan on yearly billing if you need Hyperliquid back to its start, Solo if files are enough and Professional if your backtest wants the replay server. Read clause 9.5 first if any model trained on the data is meant to leave the building. **Start on both free tiers before either.** Tardis.dev's first-of-month files show what the old tape looks like; 0xArchive's rolling 30 days is enough to write and test the loader. Neither needs a card. If what you want is your own account's positions and fills rather than the market's book, neither is the right purchase — see [Hyperliquid positions and trade history](https://cryptomarkets.tools/how-to/get-hyperliquid-positions-and-trade-history). ## FAQ ### Which one has more Hyperliquid history? 0xArchive, by about eighteen months. Its native L2 book and trades start on 15 April 2023; Tardis.dev's Hyperliquid feed starts on 29 October 2024. But 0xArchive's 2023 book is the venue's top 20 levels per side, and full depth with every resting order starts only on 11 March 2026. Check the data type you need, not the headline date. ### What is the cheapest way to get all of it? On 0xArchive, one month of Build at 49 dollars reaches the full archive, and data downloaded while entitled stays usable after you cancel. On Tardis.dev the billing interval decides how far back you can reach — four months on monthly billing, twelve on quarterly, four years on yearly — so all of Hyperliquid's 23 months means a yearly commitment on a plan quoted from 700 dollars a month. ### Can I try either without paying? Both, in opposite directions in time. Tardis.dev serves the first day of every month, for every exchange and data type, without a key — a thin sample reaching all the way back. 0xArchive's free key covers the most recent rolling 30 days, continuously, with no card. Use the first to see what the old tape looks like and the second to build the integration. ### Can I train a model on the data and sell it? Not on Tardis.dev. Its licence allows internal, task-specific models for research, backtesting, execution and risk, and forbids selling or licensing a model developed with the data. 0xArchive's Data License lists model training and customer-facing products as permitted where the output materially transforms the data and the records cannot be reconstructed. ### Does either give me a live feed? 0xArchive does, over a WebSocket metered in credits — up to one per message, which at the default rate can use the free plan's monthly allowance in under fourteen hours on one symbol. Tardis.dev sells no hosted real-time feed at any price; its open-source clients stream live data straight from the exchanges, free and without a Tardis key.