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Anonymous Mode

Are you publishing code that you want anyone to be able to run easily? Use Anonymous Mode to let someone run your code, see a W&B dashboard, and visualize results without needing to create a W&B account first.

Allow results to be logged in Anonymous Mode with wandb.init(anonymous="allow")


Publishing a paper? Please cite W&B, and if you have questions about how to make your code accessible while using W&B, reach out to us at

How does someone without an account see results?โ€‹

If someone runs your script and you have to set anonymous="allow":

  1. Auto-create temporary account: W&B checks for an account that's already signed in. If there's no account, we automatically create a new anonymous account and save that API key for the session.
  2. Log results quickly: The user can run and re-run the script, and automatically see results show up in the W&B dashboard UI. These unclaimed anonymous runs will be available for 7 days.
  3. Claim data when it's useful: Once the user finds valuable results in W&B, they can easily click a button in the banner at the top of the page to save their run data to a real account. If they don't claim a run, it will be deleted after 7 days.

Anonymous run links are sensitive. These links allow anyone to view and claim the results of an experiment for 7 days, so make sure to only share links with people you trust. If you're trying to share results publicly, but hide the author's identity, please contact us at to share more about your use case.

What happens to users with existing accounts?โ€‹

If you set anonymous="allow" in your script, we will check to make sure there's not an existing account first, before creating an anonymous account. This means that if a W&B user finds your script and runs it, their results will be logged correctly to their account, just like a normal run.

What are features that aren't available to anonymous users?โ€‹

  • No persistent data: Runs are only saved for 7 days in an anonymous account. Users can claim anonymous run data by saving it to a real account.

  • No artifact logging: Runs will print a warning on the command line that you can't log an artifact to an anonymous run.

  • No profile or settings pages: Certain pages aren't available in the UI, because they're only useful for real accounts.

Example usageโ€‹

Try the example notebook to see how anonymous mode works.

import wandb

# Start a run allowing anonymous accounts

# Log results from your training loop
wandb.log({"acc": 0.91})

# Mark the run as finished
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