Extended DEX review
Live Extended stats updated every minute: 24h volume, open interest, fees (0% maker / 0.025% taker), and up to 100x leverage across 326+ pairs on Starknet.
At a glance
- Measured cost rank
- Rank 4 of 39, 2.59 bps$10,000 BTC market buy, measured October 3, 2026, 12:55 UTC. Full ranking
- Fees, base tier
- 0% maker, 0.025% takerSource, read 2026-09-23
- Maximum leverage
- 50x on BTC and ETH; 100x on EUR-USD onlySource, read 2026-09-23
- Chain and settlement
- StarknetSource, read 2026-09-23
- Custody of funds
- Self-custody in Starknet contractsSource, read 2026-09-23
- Funding interval
- Every hourSource, read 2026-09-23
- Audits named in official docs
- ChainSecurity (Starknet perpetual contracts), Code4rena (public contest, March 2025)Source, read 2026-09-23
- Last reviewed
- 2026-09-23
Verdict
7.0/10 · how we rankRanked #18 of 84 DefiLlama-listed perp DEXes by 24h volume (1.1% share, 2026-10-03 snapshot). Taker fee 0.025% is below the DEX median of 0.04%.
Advantages
- The base maker fee is 0.000%, and the base taker fee is 0.025%
- User funds stay in self-custody smart contracts on Starknet
- ChainSecurity and a Code4rena public competition audited the Starknet perpetual contracts
- In PerpFinder cost sweeps of September 22 and 23, 2026, Extended had rank 3 for BTC and ETH market buys
Considerations
- The hourly funding cap can be as high as 2% in some crypto market groups
- The maximum leverage is different for each market, so you must check each limit
- The official pages that we read do not show a way to withdraw funds if the operator goes down
Last editorial review 2026-09-23 · live protocol stats refresh every minute — rating is our editorial assessment, not an objective fact.
- Markets
- 326+ pairs
- Launch date
- Unavailable
Extended — volume and open interest
Venue terms from the registry. Daily volume series since 2026-06-05; latest observed day 2026-10-03.
Extended is a decentralized perpetual futures exchange on Starknet with self-custody smart contracts. The base fee is 0.000% maker and 0.025% taker, with up to 100x leverage on selected markets and 50x on BTC and ETH. Airdrop & points program
Market share by 24h volume
- Hyperliquid Perps26.8%
- Variational17.5%
- Aster Perps10.8%
- Lighter Perps6.5%
- GMX Solana6.3%
- Other ranked venues32.2%
Share of reported 24h volume across the 84 ranked DefiLlama-listed perp DEXes in the 2026-10-03 snapshot. Browse DefiLlama-listed perp DEXes
PerpFinder may earn a commission from this link. You can lose all your money on perp trades. Details
Live figures
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Taker fee vs other perp DEXes
Show all 36 venues▾
Published base-tier rates from each venue's fee page. A negative maker fee is a rebate. Volume tiers, referral discounts and token holdings can lower what you pay.
Rating breakdown
Key features
Who can use Extended perps
Each answer comes from the Extended terms or help pages, or from a regulator register. Each source shows the date that we opened it. See all venues in the perps by country matrix.
- United StatesNot available
The restricted-countries page names the United States of America as a restricted territory.
- United KingdomNot available
The restricted-countries page names the United Kingdom as a restricted territory.
- EU and EEANot named
The restricted-countries page does not name the European Union, the EEA, or any EU member state.
- CanadaNot available
The restricted-countries page names Canada as a restricted territory.
- AustraliaNot named
The restricted-countries page does not name Australia. No Extended page states a service for Australia.
- SingaporeNot named
The restricted-countries page does not name Singapore. No Extended page states a service for Singapore.
- NorwayNot named
The restricted-countries page does not name Norway. It does not name the European Union or the EEA.
Identity check: Not stated. The terms mention identity checks only for a third-party fiat on-ramp provider. No page states whether the Extended interface itself asks for identity verification.
This page is not legal advice. It repeats what each venue and regulator publish on the checked date. Read the current terms and ask a qualified adviser before you trade.
SourcesTerms, help pages and regulator registers
- United States: Extended restricted-countries page (checked 2026-09-23)
- United Kingdom: Extended restricted-countries page (checked 2026-09-23)
- EU and EEA: Extended restricted-countries page (checked 2026-09-23)
- Canada: Extended restricted-countries page (checked 2026-09-23)
- Australia: Extended restricted-countries page (checked 2026-09-23)
- Singapore: Extended restricted-countries page (checked 2026-09-23)
- Norway: Extended restricted-countries page (checked 2026-09-23)
- Identity check: Extended terms of use (checked 2026-09-25)
Extended review 2026
What Extended is and how it settles
Extended is a decentralized exchange (DEX) for perpetual futures contracts (perps). The technical architecture page says that Extended "is a perpetuals DEX built on Starknet, a general-purpose decentralised zk-chain." User funds stay in smart contracts on Starknet. A trader connects a crypto wallet and keeps control of the funds.
The official docs are on the Extended docs site.
Fees
The trading fees page lists a maker fee of 0.000% and a taker fee of 0.025%. A maker fee applies to an order that adds liquidity. A taker fee applies to an order that removes liquidity.
At the taker rate, a $10,000 market order costs $2.50 in trading fees. The spread, slippage and funding are separate costs. Use the fee calculator to test other order sizes.
The funding payments page says that Extended charges funding every hour. For order-book crypto markets, the cap is between 0.25% and 2% per hour, by market group. For real-world asset (RWA) markets, the cap is 1% per hour. You can compare current rates on the funding rates tracker.
Audits
The smart contract audits page names two reviews. ChainSecurity audited the "starkware-starknet-perpetual" code. Code4rena ran a public audit competition with the name "2025-03-starknet-perpetual". An audit checks one version of the code at one time. It does not remove smart contract risk.
Main risks
- Funding cost: the hourly cap is as high as 2% for some crypto market groups, so a long hold can cost more than the trading fee.
- Market limits: leverage limits and funding caps are not the same in each market.
- Operator risk: the official pages that we read do not show a way to withdraw funds if the operator goes down.
- Smart contract risk: audits reduce this risk, but code errors can still occur.
- Leverage risk: at high leverage, a small price move can cause liquidation.
Leverage and markets
The documentation summary describes "trading across 100+ markets including crypto, equities, FX, commodities, and indices, with up to 100x leverage." The top leverage is not the same in each market. On September 23, 2026, the markets API showed 50x for BTC-USD and ETH-USD.
Only EUR-USD allowed 100x. The API listed 326 active perpetual markets. Check the limit for each market in the trading app before you open a position.
Measured trading cost
PerpFinder stored cost sweeps on September 22 and 23, 2026. In these sweeps, Extended had rank 3 for BTC and ETH market buys of $10,000, $100,000 and $1,000,000. The rank stayed the same at all three order sizes.
A rank can change when order books or fees change. The full ranking is on the cheapest BTC perp exchange page.
Custody and exit path
The architecture page says: "All user funds are fully self-custodied in on-chain smart contracts, with no custodial access by Extended." The same page says that each transaction that moves collateral gets a full on-chain health check.
The official pages that we read do not show a way to withdraw funds if the operator goes down. Read the withdrawal rules in the docs before you deposit funds.
Who it may fit
Extended can fit a trader who places limit orders, because the base maker fee is 0.000%. The measured BTC and ETH ranks can suit a trader who places large market orders. The market list can suit a trader who wants perps on stocks, FX or commodities.
A trader who holds positions for a long time must check the hourly funding caps first. Compare Extended with other venues on the compare page, the perps list or the Pacifica review.
Frequently asked questions
What is the maximum leverage on Extended?
The official documentation gives a venue-wide limit of up to 100x.
The markets API showed 50x for BTC-USD and ETH-USD on September 23, 2026, and 100x only for EUR-USD. The limit is different for each market. Check the limit for your market in the trading app before you open a position.
What are the trading fees on Extended?
The official trading fees page lists a base maker fee of 0.000% and a base taker fee of 0.025%.
The spread, slippage and funding are separate costs.
How many markets does Extended offer?
The official documentation says that Extended offers more than 100 markets.
These markets include crypto, equities, FX, commodities and indices.
Has Extended been audited?
Yes, the official audits page names ChainSecurity and a Code4rena public audit competition.
Both reviews cover the Starknet perpetual contracts. An audit does not remove smart contract risk.
Does Extended hold user funds?
The official architecture page says that all user funds stay in on-chain smart contracts.
It also says that Extended has no custodial access to these funds.
How often does Extended charge funding?
Extended charges funding every hour.
The hourly cap is between 0.25% and 2% for order-book crypto markets, by market group. The cap is 1% per hour for real-world asset markets.
Trade on Extended
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