Frax vs Frax FPI: dollar peg or CPI target? (2026)

The main difference is what each token is meant to preserve. FRAX is designed to trade at one US dollar. FPI instead targets the US CPI-U basket of consumer items, aiming to preserve purchasing power over time. That means FPI is not a substitute for a fixed-dollar stablecoin: its intended price can rise with inflation. FRAX’s description points to AMO smart contracts, Fraxlend, Fraxswap and Curve as mechanisms used to support its dollar peg. FPI uses on-chain stability mechanisms tied to its CPI-based target. The choice is therefore about the target you want, not simply which token has the more familiar name. If you need a dollar-denominated asset, FRAX fits the stated purpose more closely. If an inflation-linked target is the priority, FPI is the more relevant design, but its much smaller TVL and thin trading are important considerations.

FRAX has about $30.1 million in TVL and is listed on Ethereum. FPI has about $94,000 in TVL and is listed on Ethereum, Arbitrum and Base, with its Base address via LayerZero. The wider chain presence does not remove the liquidity concern: FPI is described as having thin trading, and a trading-volume figure of $0 was shown in one comparison. FRAX also has low 24-hour trading volume noted, so neither should be treated as having guaranteed deep liquidity. For both, a trade may be affected by the venue and available liquidity. The fee figures for minting, redeeming or holding either product are not published. Ethereum transactions also incur network gas, while DEX trades can involve swap fees and slippage. FPI’s thin liquidity may make slippage a particularly important cost to check before trading.

FRAX has two audits listed, but the auditors, dates and scope are not published. FPI has no audits listed. These differences are useful to note, but an audit listing does not guarantee safety or prevent future problems. FRAX relies on multiple subprotocols, including Fraxlend, Fraxswap and Curve, which adds dependencies as well as smart-contract risk. FPI also depends on Frax contracts and on its CPI-linked stability mechanism holding up. Algorithmic designs can fail to maintain their intended target, and either token can face smart-contract or liquidity risks. Governance can add new AMOs and subprotocols to FRAX, so its risk profile may change. For FPI, the very low TVL and thin trading can make exiting at a desired price harder. Check current documentation and contract details before using either asset; only risk funds you can afford to lose.

Choose FRAX if your priority is a stablecoin designed around a $1 target and you want the described mix of AMOs, lending, AMM and Curve integration. It also has substantially more TVL than FPI and two audits listed, though audit details and fee figures are not published. Choose FPI if you specifically want a CPI-U-linked target rather than a fixed dollar price, and understand that this design aims to track inflation, not stay at $1. Its multi-chain presence is broader, but its TVL is very small and its trading is described as thin; no audits are listed. Neither option is a risk-free cash equivalent. Before choosing, consider whether you need a fixed-dollar target or an inflation-linked one, then check the relevant app for current fees, liquidity and contract information.