Xanax (alprazolam) and Valium (diazepam) are both benzodiazepines prescribed for anxiety and related conditions, but they differ in strength, onset, and duration. Xanax works quickly with a shorter half-life, making it effective for sudden anxiety or panic attacks, while Valium lasts longer and may be used for muscle spasms, seizures, or alcohol withdrawal. Comparing Xanax vs Valium helps patients understand which option may suit their condition best, along with potential risks of dependence and side effects.