I have my Anthropic Developer account set up with an API key and billing enabled. I keep trying to connect Anthropic to Zapier but keep getting this message. Any ideas on how to resolve this?
authentication failed: model: claude-sonnet-4-20250514
Best answer
Can't connect Anthropic "authentication failed: model: claude-sonnet-4-20250514" error
Best answer by SamB
Hi and welcome to the Community
I did some checking and found we’ve got a bug report open for this issue. We can’t give any estimate as to when it will be resolved by but our Support team have added you to the list of users being affected, so you’ll get an email notification from us as soon as it is.
There aren’t any workarounds noted at the moment but I’ll be sure to follow up here if I come across any. Let us know if there’s anything else I can help with in the meantime.
This is a critical error that is holding my team back for over a week. I'm used to Zapier and want to stay here, but I'm also looking at other options if Zapier can't fix it in the next couple of days. Can we please have an update?
This is a critical error that is holding my team back for over a week. I'm used to Zapier and want to stay here, but I'm also looking at other options if Zapier can't fix it in the next couple of days. Can we please have an update?
I have been using AI by Zapier and managed to get it working after receiving this error.
When you try connect, it gives you an error, but if you then exit the screen and go back to Configuration → Authentication, you can then actually select the authentication you just attempted.
When I did this, it turned out that despite the error, my zap was able to operate and communicate with Claude as intended!
Just thought I'd let you know incase it works for you too.
Please add me to the list. I saw someone above Make.com is working and is cheaper - I’ll try that while I wait.
This is my first time using Zapier. Not a great first impression. Looking at using Make.com instead.
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