The "CPMM" tag on DexScreener stands for Constant Product Market Maker, which refers to the underlying automated market maker (AMM) model used by a decentralized exchange (DEX).
What is CPMM?

CPMM is the foundational AMM algorithm popularized by Uniswap, where the liquidity pool maintains a constant product of the two assets:x * y = k
x= Amount of Token Ay= Amount of Token Bk= Constant value
This means that as one token is bought, the other increases in price to keep k constant.
Why Does DexScreener Show CPMM?
DexScreener labels liquidity pools with CPMM to indicate they follow this pricing model. Most traditional DEXs (like Uniswap, PancakeSwap, Sushiswap) use CPMM, but some newer DEXs may use different models like:
StableSwap (Curve-style) – Optimized for stablecoin pairs.
Hybrid AMMs – Mixing CPMM with concentrated liquidity (e.g., Uniswap v3).
Dynamic AMMs – Adjusting fees or pricing dynamically.
Key Takeaways
If a pool has a CPMM tag, it means it follows the classic Uniswap-style AMM.
CPMM pools are simple but can suffer from high slippage for large trades.
Other AMM types (like StableSwap) may offer better rates for specific assets.
