Solidity

[9] Solidity was designed by Gavin Wood[10][non-primary source needed] and developed by Christian Reitwiessner, Alex Beregszaszi, and several former Ethereum core contributors.

Solidity introduces an application binary interface (ABI) that facilitates multiple type-safe functions within a single smart contract (this was also later supported by Serpent).

"[31] The developers community often cites Solidity requiring much of third party interfaces and APIs, and its inability to create critical information intensive smart contracts.

Rust offers built-in memory safety features that prevent common programming errors, such as null pointer dereferencing and buffer overflows, which are not as rigorously enforced in Solidity.

[34] While Solidity is deeply integrated with the Ethereum ecosystem and its numerous development tools,[35] Rust is versatile and can be used across various blockchain platforms that leverage Wasm.