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Question

Claude 504 error - Opus 4 responses too long for your timeout limit?

  • June 6, 2025
  • 1 reply
  • 257 views

I’m sending a heavy prompt to Opus 4. Output tokens are 1500-1800.

I’ve had it work once today but subsequent tries are timing out with a 504 error. I can see it logging the request (and billing me for it) in the anthropic api logs so I know it’s making it that far. I suspect your timeouts are too short for this kind of heavy lift on Opus 4. When I switch the model it works again so I think you just need to raise this limit.

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1 reply

JammerS
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  • Zapier Staff
  • 3527 replies
  • June 9, 2025

Hi ​@danimyl,

 

Welcome to the Community.

The 504 timeout likely happens because your large prompt with 1500–1800 output tokens exceeds Zapier's current timeout limits. I recommend contacting Zapier Support to check if the timeout can be extended for Anthropic Opus four, trying to split your prompt into smaller parts, or using a lighter model that processes faster. Your feedback will be shared with the team so they can consider raising timeout limits for heavy requests. 

Feel free to reach out if you encounter any issues or need further assistance. We're here to help.