Data: No, there is absolutely no difference in the data. You receive the exact same high-quality profile and company information as you would with a connected account.
Speed: Yes, account-less mode is much faster for large projects because of "horizontal scaling." Here is the simple math on how it works:
If you scrape using your own connected account, the speed is limited to what that single account can safely handle.
However, when you use Account-Less Mode combined with Smart Link Splitting, we change the equation:
We split the work: Our system breaks your large search link into many smaller, manageable pieces.
We use our pool, not yours: Instead of forcing all that traffic through your one account, we distribute those small pieces across our internal pool of hundreds of system accounts.
We work in parallel: Because hundreds of accounts are scraping different parts of your list at the exact same time, the job finishes drastically faster.