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 everyone 👋
Sorry for the delayed update here. I'm happy to report that this issue has been resolved! Our engineers have fixed the problem that was causing valid API keys to fail during authentication, so you should be able to connect your Anthropic account without any errors now.
I know this issue was super frustrating, especially for those of you setting up your first Zaps or with workflows held up for over a week. Really appreciate everyone's patience while our team worked on the fix. And thank you
Thanks again for hanging in there, and let us know if anyone's still running into trouble 🙏
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.
+11- Community Manager
- Answer
Hi everyone 👋
Sorry for the delayed update here. I'm happy to report that this issue has been resolved! Our engineers have fixed the problem that was causing valid API keys to fail during authentication, so you should be able to connect your Anthropic account without any errors now.
I know this issue was super frustrating, especially for those of you setting up your first Zaps or with workflows held up for over a week. Really appreciate everyone's patience while our team worked on the fix. And thank you
Thanks again for hanging in there, and let us know if anyone's still running into trouble 🙏
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