How can I delete multiple runs in bulk instead of one at a time?

From the Runs tab in your Workspace, select the checkbox next to each run to delete, then click Delete. To filter runs by a condition rather than selecting them manually, use the public API to delete multiple runs in a single operation. Replace [ENTITY] and [PROJECT] with your entity and project names, and replace [CONDITION] with a Python expression that evaluates to True for runs you want to delete:

import wandb

api = wandb.Api()
runs = api.runs('[ENTITY]/[PROJECT]')
for run in runs:
    if [CONDITION]:
        run.delete()

Projects Runs