solana-builtins-default-costs is used at run time in 28 crates. It is a direct run-time dependency in 3 crates. It's used only as a dev dependency in 13 crates.

Depender (with downloads and own rev deps) solana-builtins-default-costs version
21K 5 solana-cost-model =2.1.0
10K 16 solana-core =2.1.0
1.1K 5 solana-runtime-transaction =2.1.0