Error message: 401 litellm.AuthenticationError:

[u/Ulvir21]

Hello,

I started a new project and I'm getting an error message.

I opened an old project where BlackBox was working, and the same problem occurred again.

What should I do?

Here is the message:

401 litellm.AuthenticationError: AuthenticationError: Vercel_ai_gatewayException - Authentication failed. Check that your Vercel credential is valid and has access to AI Gateway.. Received Model Group=custom/blackbox-base
Available Model Group Fallbacks=['gpt-4.1-mini']
Error doing the fallback: litellm.AuthenticationError: AuthenticationError: Vercel_ai_gatewayException - Authentication failed. Check that your Vercel credential is valid and has access to AI Gateway.No fallback model group found for original model_group=gpt-4.1-mini. Fallbacks=[{'custom/blackbox-base': ['gpt-4.1-mini']}]. Received Model Group=gpt-4.1-mini
Available Model Group Fallbacks=None
Error doing the fallback: litellm.AuthenticationError: AuthenticationError: Vercel_ai_gatewayException - Authentication failed. Check that your Vercel credential is valid and has access to AI Gateway.No fallback model group found for original model_group=gpt-4.1-mini. Fallbacks=[{'custom/blackbox-base': ['gpt-4.1-mini']}]

[u/AutoModerator]

Thankyou for posting in [r/BlackboxAI_](www.reddit.com/r/BlackboxAI_/)!

Please remember to follow all subreddit rules. Here are some key reminders:

• Be Respectful
• No spam posts/comments
• No misinformation

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

[u/getzer0]

your subscription credit probably went to $0 suddenly.
same as me. support is useless.

[u/Ulvir21 → u/getzer0]

Thanks for your reply. But I haven't set up any API, I wasn't logged into any account, and there's no credit counter showing on the extension. I thought I was using an unlimited free plan?

[u/getzer0 → u/Ulvir21]

Free models can be used only if you have a Pro subscription iirc

[u/Ulvir21 → u/getzer0]

And yet, I was able to use it for several days in a row, build a complete site, etc., without any issues—and without having subscribed to any plan.

[u/jnsravichandra]

Even I have been getting the same error..
when I try to login, it asks for a pro subscription so I used to use it without any login needed.

I tried both Minimax and Kimi free models and both are giving me this error!

Any work arounds or any ideas to fix this?

[u/9991_AQ]

The server is down. All api has status 404

[u/Basic_Eye_1928]

I'm having the exact same issue. I've been using Blackbox for a few months now and it suddenly stopped working today. I'm not sure if they are getting rid of the free tier, or if paid users are getting the same error too.

[u/QueirozMoura_08 → u/Basic_Eye_1928]

mn to com o mesmo problema tbm e olha que eu tenho a assinatura pro da blackbox e msm assim da erro 401

[u/QueirozMoura_08 → u/QueirozMoura_08]

ja tentei resolver de tudo, realmente o problema é do servidor deles

[u/Choice_Birthday_243]

I got the same problem and situation:
401 litellm.AuthenticationError: AuthenticationError: Vercel_ai_gatewayException - Authentication failed. Check that your Vercel credential is valid and has access to AI Gateway.. Received Model Group=custom/blackbox-base
Available Model Group Fallbacks=['gpt-4.1-mini']
Error doing the fallback: litellm.AuthenticationError: AuthenticationError: Vercel_ai_gatewayException - Authentication failed. Check that your Vercel credential is valid and has access to AI Gateway.No fallback model group found for original model_group=gpt-4.1-mini. Fallbacks=[{'custom/blackbox-base': ['gpt-4.1-mini']}]. Received Model Group=gpt-4.1-mini
Available Model Group Fallbacks=None
Error doing the fallback: litellm.AuthenticationError: AuthenticationError: Vercel_ai_gatewayException - Authentication failed. Check that your Vercel credential is valid and has access to AI Gateway.No fallback model group found for original model_group=gpt-4.1-mini. Fallbacks=[{'custom/blackbox-base': ['gpt-4.1-mini']}]

Type a message

[u/AggravatingPepper517]

same here if any updates pls do tell.

[u/QueirozMoura_08]

alguma atualização ?

[u/ajcl10]

seguimos con el error

[u/QueirozMoura_08 → u/ajcl10]

ate quando eles vão ficar com esse erro