The short answer
ORBIT Perp Screener is the closest site to arb.sh in what it sets out to do. Both price funding pairs after measured order-book cost, both run backtests, and both are free without an account. Three things differ. arb.sh ranks every pair by Net 7d at your position size in its main funding screener, while ORBIT ranks pairs after costs on its Size & Depth and coin pages. arb.sh alone lists 13 exchanges, Kalshi, Deribit, Kraken Futures and GMX among them, and ORBIT alone lists 14. arb.sh adds vaults, exchange news, spot legs, CSV exports and Korean pages, while ORBIT adds capacity checks up to $5M per leg, a next-hour funding schedule, and Russian and Japanese pages. Use arb.sh for net ranking at your size in one table. Stay on ORBIT for capacity checks at large size. Both are free, so both can stay open.
What ORBIT Perp Screener and arb.sh already do the same way
ORBIT Perp Screener (orbitperpscreener.com) sets out to do the same job as arb.sh. It runs a funding arbitrage screener across centralized exchanges (CEX) and decentralized exchanges (DEX). It ranks funding pairs after costs, with slippage measured by walking live order books. Like arb.sh, it has a pair backtester and prices execution cost at $10,000, $100,000 and $1,000,000.
The overlap goes past funding. Both sites have a price arbitrage screener, points and airdrop tracking, perps on real-world assets and an llms.txt file. The differences sit in three places: where the net figure lives, which venues each site reads, and what each adds on top. Venues come first, because they decide where you can trade.
63 venues or 62: which exchanges each site reads alone
The venue list built into ORBIT's screener holds 63 venues: 43 DEX and 20 CEX. Its pages print different venue counts, so this page uses the screener list. As of 6 October 2026, arb.sh reads 62 perpetual exchanges: 48 DEX and 14 CEX, all on the exchange list.
- Only on arb.sh
- 13 exchanges. DEX: Aevo, Avantis, Derive, gTrade (Gains), GMX, Hotstuff, Injective, Jupiter, Kalshi, SunX, Vest. CEX: Deribit, Kraken Futures.
- Only on ORBIT Perp Screener
- 14 exchanges. CEX: Bitunix, CoinW, Crypto.com, Hotcoin, LBank, Pionex, Toobit, WEEX. DEX: Bullpen, dreamcash, Felix Exchange, HyENA, Meridian, Ventuals.
ORBIT files WOOFi Pro under the slug "orderly", so it counts as shared with Orderly on arb.sh. This page does not compare volume or open-interest totals, because the venue sets and counting conventions differ.
Where each site puts the after-cost number
ORBIT's funding screener is an asset-by-exchange grid of funding rates, sorted by spread: "Spread = Short-leg APR − Long-leg APR". Timeframes run from Now to 90D, in APR or 8h units. Clicking a spread opens the pair backtester, which shows the execution cost.
ORBIT's after-cost rankings live on other pages. Size & Depth prices funding pairs at $100k, $500k, $1M, $5M or a custom size per leg and shows Net APR: the 7-day average first, then the 30-day average, a p10-p90 band and the live value, with entry plus exit cost and payback in days. Coin pages and exchange-vs-exchange pages rank pairs by funding actually paid over 7 days on $10,000 after costs.
The arb.sh funding arbitrage screener ranks every pair by funding spread, Paid 7d and Net 7d in one table, with Net 7d at the position size you set:
- 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. The default size is $10,000, and $100,000 and $1,000,000 are also measured. So the difference is location. On arb.sh you set $100,000, sort by Net 7d and read what both legs leave after fees and slippage, right in the screener row. On ORBIT you open Size & Depth or a coin page to rank after costs, and Size & Depth reaches larger sizes. The execution cost page lists the taker fee plus measured slippage at $10k, $100k and $1M on every exchange, and which exchanges can fill each size.
What each backtester counts as cost, and how far back the history goes
- ORBIT
- A long venue, a short venue and a size per leg, $10,000 by default. The page offers 1D to 60D, and its docs say up to 90 days "where data is available". The cost is "round-trip taker fees + live L2 orderbook slippage on both legs", and the taker fee on each leg can be overridden. Results include PnL, win rate, max drawdown and payback.
- arb.sh
- The backtest itemizes every cost line for a long/short pair on any asset over up to 90 days: settled funding on each leg, the price spread between the exchanges, each exchange's real taker fee and the order-book slippage measured for the position size. It also shows drawdown and the top pairs for the asset over the same period. No cost is typed in.
ORBIT's docs state their own limit: "Slippage is calculated from CURRENT order-book depth, not historical." Venues without public order books are flagged "slippage not modeled".
ORBIT shows settled payments per coin over 7, 30 and 90 days, and its research page cites "189 days of funding history". arb.sh records settled funding as it happens and keeps it with no 30-day ceiling. Recording began on 18 September 2026, and for exchanges that publish no funding history, the record starts that day. A backtest replays settled funding. It is not a forecast.
What arb.sh has that ORBIT Perp Screener does not
As of 6 October 2026, ORBIT does not have any of the following:
- 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.
- Spot as a leg: spot on Binance, Bybit, OKX and Hyperliquid paired with a perp (buy spot, short the perp), with the same Net after fees and slippage.
- CSV exports cover the funding screener, the price screener and execution cost.
- Korean pages under /ko.
What ORBIT Perp Screener does that arb.sh does not
- Russian and Japanese pages. arb.sh has English, Chinese and Korean.
- A capacity figure in dollars and a "Fits?" badge (YES, PARTLY or NO) at sizes up to $5M per leg, on Size & Depth.
- A list of markets paying funding in the next hour, with what a $10,000 long or short gets or pays.
- A price-convergence backtester for two venues.
- The gold spread on a single exchange: XAU vs XAUT vs PAXG, after fees at a chosen size.
- A points calculator priced from Polymarket FDV odds, and an events calendar of trading competitions and campaigns.
- A liquidation price calculator, a 27-term glossary and long-form exchange reviews.
- Plain-Markdown copies of its settled-funding pages.
- The 14 exchanges listed above.
Stay on ORBIT if you size up to $5M per leg and want a fit check, or if you trade on its own venues. It also fits if you time entries around the next funding payment, trade price convergence or the gold spread, or value points with its calculator.
What each site costs
Both sites are free and need no account. ORBIT's screener and every page on its site have no plans. arb.sh has no plans and nothing paywalled, CSV exports included.
Questions about ORBIT Perp Screener and arb.sh
Is arb.sh the same as ORBIT Perp Screener?
No, but it is very close. Both rank funding pairs after measured order-book cost, backtest pairs, price execution at three sizes and track points programs. They differ in where the net figure appears and which exchanges each site reads. Each also has its own extras: vaults on arb.sh, capacity checks on ORBIT. arb.sh publishes this comparison.
Do both sites rank funding pairs after fees and slippage?
Yes. ORBIT does it on Size & Depth, on its coin and exchange-vs-exchange pages, and inside its pair backtester. arb.sh does it in the main funding screener, where Net 7d sits in every row at your position size, next to Paid 7d.
Does arb.sh cover the same exchanges as ORBIT?
Mostly. The list built into ORBIT's screener has 63 venues and arb.sh reads 62, with 49 on both. arb.sh alone has 13, among them Kalshi, Deribit, Kraken Futures and GMX. ORBIT alone has 14, among them Crypto.com, LBank, Toobit and Bullpen.
Does arb.sh show capacity or a fit check for large positions?
No. arb.sh measures the taker fee plus order-book slippage at $10,000, $100,000 and $1,000,000 on every exchange and shows which exchanges can fill each size. It has no dollar capacity figure or fit badge. ORBIT's Size & Depth page has both, at up to $5M per leg.
Is there an API or a data export?
Neither site has a public API. arb.sh offers free CSV exports of the funding arbitrage screener, the price arbitrage screener and execution cost, plus an llms.txt file. ORBIT has an llms.txt file and plain-Markdown copies of its settled-funding pages.
Is either site paid or behind an account?
Neither site charges for its pages or asks for a login. The screeners and backtesters on either site open straight away, with no plan to buy. Downloading the arb.sh CSV files needs no key or subscription either.