AnyEquatable.swift

// Simplified version of https://gist.github.com/anandabits/d9494d14fef221983ff4f1cafa318d47#file-areequatablyequal-swift

func isEqual(x: Any, y: Any) -> Bool {
    func f<LHS>(_ lhs: LHS) -> Bool {
        let p = Wrapper<LHS>.self as? AnyEquatable.Type
        return p?.isEqual(x, y) ?? false
    }
    return _openExistential(x, do: f)
}

private protocol AnyEquatable {
    static func isEqual(_ lhs: Any, _ rhs: Any) -> Bool
}

private enum Wrapper<T> {}

extension Wrapper: AnyEquatable where T: Equatable {
    static func isEqual(_ lhs: Any, _ rhs: Any) -> Bool {
        guard let l = lhs as? T, let r = rhs as? T else { return false }
        return l == r
    }
}

print(isEqual(x: [5,6,7] as Any, y: [5,6,7] as Any))

With a small adaptation you can also make this work for heterogenous containers like [String: Any] and [Any] which are typically used to represent JSON structures. https://gist.github.com/ollieatkinson/9fa246abf21a09a52d7c7c6e6149dc1e