Loris Tools vs arb.sh: 43 exchanges or 62, and funding net of fees

The short answer

Loris Tools is the broader derivatives data product, with liquidations, options, a trading interface and a paid API. arb.sh is narrower. Both rank funding arbitrage pairs across centralized and decentralized exchanges, both are free to read without an account, and both have a backtester. Three things differ. arb.sh lists 62 exchanges against 43 on the Loris Tools screener. arb.sh shows Net after taker fees and measured slippage in each row, where Loris Tools shows MAX ARB at current rates. arb.sh also has a price arbitrage screener and no paid plans. Stay on Loris Tools for trading, liquidations, options or the API. Use arb.sh to check whether a spread survives costs.

What is the same on Loris Tools and arb.sh

Both sites rank funding-rate arbitrage pairs across centralized and decentralized exchanges. Both screeners can be read without an account. Each also has a backtester, funding history, RWA perps and an llms.txt. On arb.sh, the RWA perps page groups perps on stocks, gold, commodities, FX and indices.

Which exchanges each funding screener covers

As of 29 September 2026, the Loris Tools funding screener lists 43 exchanges, centralized and decentralized. arb.sh lists 62: 46 decentralized (DEX) and 16 centralized (CEX). The exchange list shows all of them. A pair that includes an exchange missing from a site cannot be ranked on that site.

Only on arb.sh

dYdX, GMX, Jupiter, Backpack, Kraken, Deribit, Gains, Avantis, ApeX and Orderly, among others. In total, 23 arb.sh exchanges are not on Loris Tools.

Only on Loris Tools

Crypto.com, Decibel, TxFlow and WOOFi.

Why MAX ARB and Net 7d rank pairs differently

Coverage decides which pairs you can see. The cost line decides which ones are worth taking.

Loris Tools shows one row per symbol with MAX ARB, the largest funding spread between two of its exchanges at current rates. arb.sh ranks each exchange pair on each asset. As of 29 September 2026, it does not have a Net column in the screener, so no taker fee or measured slippage is subtracted at your position size. Measured cost sits on a separate Depth page. It covers 16 exchanges and shows resting liquidity, price impact by order size and all-in execution cost (spread plus taker fee). arb.sh puts two columns in the row:

Paid 7d

Settled funding that actually changed hands over the period, not the rate currently advertised.

Net 7d

Paid minus taker fees and order-book slippage to open and close both legs at the stated position size.

Slippage is measured by walking the live order book of each market, not assumed. You set the position size. The default is $10,000, and $100,000 and $1,000,000 are also measured. A wide spread on a thin book can leave nothing after cost. Net at your size shows that in the row. The execution cost page lists the taker fee plus measured slippage on every exchange, and the about page explains how the site defines Paid and Net.

How the backtests and funding history differ

Both backtesters go up to 90 days. The Loris Tools backtester accepts periods from 7 to 90 days. The difference is where the cost comes from.

Loris Tools

The execution cost is a number of basis points you type in. It is not measured from an order book.

arb.sh

The backtest uses each exchange's real taker fee and the order-book slippage measured for your position size. Every line is itemized: funding received and paid on each leg, taker fees on entry and exit, slippage, and the net result.

Loris Tools charts funding history and heatmaps from 8 hours to 30 days, with custom date ranges. Its API sells history since September 2025 on the Pro tier. arb.sh keeps settled funding without a 30-day ceiling. Its own recording began on 18 September 2026, and earlier history is each exchange's own. Where an exchange has no funding history, arb.sh's history starts the day recording began, so a backtest on that exchange covers only days since 18 September 2026. A backtest replays settled funding. It is not a forecast.

What else arb.sh has besides the funding screener

arb.sh has several pages beyond the funding screener, all free:

• The price arbitrage screener shows where the same perp trades at different prices on two exchanges, priced after costs.
• The points farm page shows which perp DEXs have no token yet and run points programs, and the airdrops page links each row to the exchange's own docs.
• Vaults lists the vaults that perp DEXs run, with TVL, 7- and 30-day return, drawdown and lock.
• News collects what perp exchanges announced this week, from their own channels.
• Market stats show DEX volume, open interest and market share over time.
• CSV exports cover the funding screener, the price screener and execution cost.

A Telegram bot answers funding and spread lookups and sends the alerts you set, and a Telegram channel posts a daily review.

What Loris Tools does that arb.sh does not

Loris Tools covers a wider area of derivatives data and tooling than arb.sh:

• Liquidations, live and history.
• Options data, including implied volatility and surfaces for BTC, ETH, SOL and others.
• Trade execution from the site on Hyperliquid, Extended, Binance perpetual futures and HIP-3 exchanges. It supports market, limit and TWAP orders through agent wallets or read-only API keys and never custodies funds. arb.sh does not execute trades, and its Trade buttons open the exchange.
• A portfolio view.
• A documented API with an embeddable widget, paid beyond BTC and ETH. arb.sh has no API, only CSV exports and llms.txt.
• A Pro workspace with widgets, charts and saved layouts.
• HIP-3 and HIP-4 dashboards, OI and volume dashboards by symbol, order-book depth history and 35 calculators, from liquidation price to options Greeks.

Stay on Loris Tools if you trade from the interface, watch liquidations, work with options, want a portfolio view, need a paid API or rely on a saved-layout workspace. A split works well. Keep the other site for those jobs, and open arb.sh to check whether a spread survives costs or to find pairs on the exchanges Loris Tools does not list.

What each site costs

arb.sh has no plans. Everything, including CSV export, is free with no account. Loris Tools plans, as of 29 September 2026:

Questions about Loris Tools and arb.sh