Best flash loan venues in 2026
Flash Loan Venues evaluated across single-transaction borrowable depth, loan cost in basis points, integration surface, and venue incident record.
#1 of 8 · published ranking
Morpho (Morpho Blue)82ChainChoice Score
Why it leads
Best in the pool on loan cost bps (10/10; next 9/10)
Cost
Not priced · No comparable price is published
8 compared Ranking-blind · 392 modules checked 2026-09-18Evidence read 2026-08-07Scored under methodology v2026.09.15 (2026-09-16)32 receipts quoted
8flash loan venues · sorted by chainchoice score
ranked before any payout data is seen#ProviderScoreEvidenceKey strengths
2−1
Integration surfaceLoan cost in basis points
3−4
Loan cost in basis pointsSingle-transaction borrowable depth
Same score, not joint · ordered by weighted total (47.00 against 46.90)
4=
Single-transaction borrowable depthIntegration surface
5−1
Single-transaction borrowable depthLoan cost in basis points
6−9
Venue incident recordIntegration surface
7−6
Loan cost in basis pointsIntegration surface
Same score, not joint · ordered by weighted total (41.00 against 40.70)
8=
Integration surfaceLoan cost in basis points
Ranking-blind — order computed before any payout data is joined
Below the table
How this ranking works
Everything the table draws on continues here: how firm the #1 is, the per-criterion arithmetic behind each score, who pays ChainChoice, and the full guide to choosing.
Direct answer
What is the best flash loan venues in 2026?
Morpho (Morpho Blue) ranks #1 overall for flash loan venues on ChainChoice. Immutable lending primitive whose flashLoan draws on the entire token balance of the singleton contract, one asset per call. It holds that rank under an affiliate-blind methodology scored across 4 published, weighted criteria — the code that ranks providers physically cannot read affiliate payouts (CI-enforced), so a payout can't move a rank. The verdict re-computes on every fee change, incident, or regulatory action; full reasoning and the audit receipt are below.
Why this score4 published criteria · leads 1 of 4
Published criterionWtScore, and the best hereGap/10Pts
Single-transaction borrowable depth7.2−198.6
Loan cost in basis points6.7·109.0
Integration surface5.3−374.9
Venue incident record4.8−185.1
Σ methodology points27.6/32
Each bar is the score on that criterion’s own 0–10 scale, never rescaled to the pool. The dark line is the best any product here reached on that axis. Wt is the most the criterion can add to the 86-point weighted total. Pts is weight × score × 32; the sum is the methodology score, and each weighted point behind the leader costs 2.6 on the displayed score. how these are weighted
Considered and not ranked
2 products we looked at and left out
A shortlist is only honest if it says who it turned away. Each of these was assessed against the same published criteria as the ranked table and excluded for a stated reason — not overlooked.
We assessed 6 products here and rank 4 — 67% of what we looked at. That share is of the products we assessed, not of the category: how many exist is not something we can count, so we do not claim a number for it.
MoonwellAave V2· No longer operating
Why it ranks first
Why Morpho (Morpho Blue) leads this category right now
Immutable lending primitive whose flashLoan draws on the entire token balance of the singleton contract, one asset per call. Strongest on loan cost in basis points (10/10): The Morpho Blue interface states that `flashFee` is zero, and the flashLoan code sends out and pulls back the same amount with no fee term and no fee parameter governance could raise. Weakest on integration surface (7/10): One dedicated call, morpho.flashLoan(token, amount, data), answered by one callback, onMorphoFlashLoan; it lends one asset per call, pulls repayment itself, and its interface warns that it is not ERC-3156 compliant. Published price: Zero, and structurally so. The interface source at raw.githubusercontent.com/morpho-org/morpho-blue/main/src/interfaces/IMorpho.sol, fetched 2026-09-27, states in the natspec directly above flashLoan, across four consecutive comment lines: "Warning: Not…
Best for
Loan cost in basis points — 10/10
Main tradeoff
The callback is not told which asset it received. onMorphoFlashLoan(uint256 assets, bytes calldata data) passes the amount and your own calldata and nothing else, so a receiver written to handle more than one token must carry the token address through `data` itself; and because repayment is pull-based, a receiver that forgets to approve Morpho reverts the whole transaction after the gas has been spent — the docs put it as 'If your callback fails to approve the repayment, the entire transaction will revert'.
Verify before signup
Zero, and structurally so. The interface source at raw.githubusercontent.com/morpho-org/morpho-blue/main/src/interfaces/IMorpho.sol, fetched 2026-09-27, states in the natspec directly above flashLoan, across four consecutive comment lines: "Warning: Not ERC-3156 compliant but compatibility is easily reached:" / "`flashFee` is zero." / "`maxFlashLoan` is the token's balance of this contract." / "The receiver of `assets` is the caller." The implementation, raw.githubusercontent.com/morpho-org/morpho-blue/main/src/Morpho.sol fetched the same day, has no fee arithmetic anywhere in the path (lines 422-432): "IERC20(token).safeTransfer(msg.sender, assets);" then "IMorphoFlashLoanCallback(msg.sender).onMorphoFlashLoan(assets, data);" then "IERC20(token).safeTransferFrom(msg.sender, address(this), assets);". The amount pulled back is the amount sent out, and there is no fee parameter for governance to raise. Unchanged since the 2026-08-07 read.
Recommendation summary
What should decide this category
Can the venue actually fund your size, today, in the asset you need?
What is the fee in basis points - read from the contract, not the docs?
Is an incident in its record an exploit OF the venue, or one that merely used it?
Quick picks
Strong options in this category
Start with the lead choice first, then use the shortlist only if you still need a challenger or stronger fit for a specific setup.
Best overall
Morpho (Morpho Blue)
Immutable lending primitive whose flashLoan draws on the entire token balance of the singleton contract, one asset per call.
Immutable lending primitive whose flashLoan draws on the entire token balance of the singleton contract, one asset per call. Strongest on loan cost in basis points (10/10): The Morpho Blue interface states that `flashFee` is zero, and the flashLoan code sends out and pulls back the same amount with no fee term and no fee parameter governance could raise. Weakest on integration surface (7/10): One dedicated call, morpho.flashLoan(token, amount, data), answered by one callback, onMorphoFlashLoan; it lends one asset per call, pulls repayment itself, and its interface warns that it is not ERC-3156 compliant. Published price: Zero, and structurally so. The interface source at raw.githubusercontent.com/morpho-org/morpho-blue/main/src/interfaces/IMorpho.sol, fetched 2026-09-27, states in the natspec directly above flashLoan, across four consecutive comment lines: "Warning: Not…
Best for: Loan cost in basis points — 10/10
Single-transaction borrowable depth · 30%
9/10
Loan cost in basis points · 28%
10/10
Integration surface · 22%
7/10
Venue incident record · 20%
8/10
Quick pick
Dai Flash Mint (DssFlash)
ERC-3156 flash mint module that creates Dai on demand up to a governance ceiling and burns it at the end of the transaction.
ERC-3156 flash mint module that creates Dai on demand up to a governance ceiling and burns it at the end of the transaction. Strongest on integration surface (10/10): The Dai flash mint conforms to ERC-3156: the standard's reference borrower works unchanged, maxFlashLoan and flashFee answer on-chain, and the module's source writes out its revert reasons (token-unsupported, ceiling-exceeded, callback-failed). Weakest on single-transaction borrowable depth (7/10): One asset on one chain: the module mints up to a 500,000,000 DAI ceiling per transaction on Ethereum and rejects USDS, the successor stablecoin. Published price: Zero, and structurally so in the deployed contract, although the vendor's developer page still describes a fee.
Best for: Integration surface — 10/10
Single-transaction borrowable depth · 30%
7/10
Loan cost in basis points · 28%
9/10
Integration surface · 22%
10/10
Venue incident record · 20%
8/10
Quick pick
Uniswap v4 (flash accounting)
Singleton PoolManager whose transient delta accounting lets a caller take tokens and settle them within one unlock, with no dedicated loan function.
Singleton PoolManager whose transient delta accounting lets a caller take tokens and settle them within one unlock, with no dedicated loan function. Strongest on loan cost in basis points (9/10): Uniswap v4 has no flash-loan function and so no loan fee: a caller takes tokens as a delta against the PoolManager and must clear it before the lock closes; a fee arises only if the caller actually swaps. Weakest on integration surface (6/10): The loan is assembled by hand: unlock the PoolManager, take the tokens, then sync, transfer and settle before control returns; any unresolved delta reverts the whole transaction. Published price: There is no flash-loan fee because there is no flash-loan function: the price is structural.
Best for: Loan cost in basis points — 9/10
Single-transaction borrowable depth · 30%
8/10
Loan cost in basis points · 28%
9/10
Integration surface · 22%
6/10
Venue incident record · 20%
8/10
Quick pick
Same score, not joint · ordered by weighted total (47.00 against 46.90)
Aave V3
The deepest venue and the only one in this pool charging a headline premium, with multi-asset loans and an option to exit into debt.
The deepest venue and the only one in this pool charging a headline premium, with multi-asset loans and an option to exit into debt. Strongest on single-transaction borrowable depth (10/10): Aave V3 funds multi-reserve flash loans from nine-figure balances in USDT, USDC, WETH and WBTC on Ethereum, and DefiLlama shows nine-figure deposits on at least seven chains. Weakest on loan cost in basis points (5/10): Aave V3 charges 5 bps, readable as FLASHLOAN_PREMIUM_TOTAL() on every Pool and identical on Ethereum, Arbitrum, Optimism, Base and Polygon; governance can change it, and the protocol currently takes all of it. Published price: The flash-loan guide (aave.com/docs/aave-v3/guides/flash-loans, fetched 2026-09-27) states "The flash loan fee is initialized at deployment to 0.05% and can be updated via Governance Vote." and sets out the split as "Fee to LP: FLASHLOAN_PREMIUM_TOTAL -…
Best for: Single-transaction borrowable depth — 10/10
Single-transaction borrowable depth · 30%
10/10
Loan cost in basis points · 28%
5/10
Integration surface · 22%
9/10
Venue incident record · 20%
7/10
Frequently asked
Questions people ask before choosing flash loan venues
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How this ranking is built
Reviewed on single-transaction borrowable depth, loan cost in basis points, integration surface, and venue incident record.
Data checked Sep 2026 · Independent rankings · We show our work
Not financial advice · For informational purposes only · Always do your own research