Why am I getting rate limit errors (429) with W&B Inference?

Support:

• Inference

  less than a minute  

Rate limit errors (429) occur when you exceed concurrency limits or run out of credits.

Types of 429 errors

Concurrency limit reached

Error: “Concurrency limit reached for requests”

Solution:

• Reduce the number of parallel requests
• Add delays between requests
• Implement exponential backoff
• Note: Rate limits apply per W&B project

Quota exceeded

Error: “You exceeded your current quota, please check your plan and billing details”

Solution:

• Check your credit balance in the W&B Billing page
• Purchase more credits or upgrade your plan
• Request a limit increase from support

Personal account limitation

Error: “W&B Inference isn’t available for personal accounts”

Solution:

• Switch to a non-personal account
• Create a Team to access W&B Inference
• Personal entities were deprecated in May 2024

Best practices to avoid rate limits

1. Implement retry logic with exponential backoff:

   import time
   
   def retry_with_backoff(func, max_retries=3):
       for i in range(max_retries):
           try:
               return func()
           except Exception as e:
               if "429" in str(e) and i < max_retries - 1:
                   time.sleep(2 ** i)
               else:
                   raise
   

2. Use batch processing instead of parallel requests

3. Monitor your usage in the W&B Billing page

Default spending caps

• Pro accounts: $6,000/month
• Enterprise accounts: $700,000/year

Contact your account executive or support to adjust limits.