Security: a close call
Both use AES-256 encryption and publish independent audit results. 1Password adds a Secret Key — a long, randomly generated value stored only on your devices — as a second factor baked into the account architecture itself. Bitwarden counters with fully open-source clients, so its encryption code has been reviewed by anyone who cares to look, not just a hired auditor.
Price: no contest
1Password has no free tier for individuals; plans start at $2.99/mo. Bitwarden’s free plan covers unlimited passwords across unlimited devices, and Premium is $10 for the entire year — less than one month of most rivals.
Everyday use
1Password’s interface is more polished: cleaner autofill prompts, a nicer browser extension, and Watchtower’s breach alerts feel more actionable. Bitwarden has closed most of the gap in recent updates, but small friction points remain in sharing and org management.