"The model claude-4-sonnet does not work with your current plan or api key"

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Using cursor agent. Legacy Cursor Pro subscription with Usage Based pricing after 1500 requests. Have not used all Pro subscription usage yet.

Steps to Reproduce

Start a chat in Agent mode. Send a prompt.

Screenshots / Screen Recordings

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.4.5 (user setup)
VSCode Version: 1.99.3
Date: 2025-08-13T02:08:56.371Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Somewhat - Issue seems to be periodic. Working again but sporadically.

Same problem. Version: 1.2.4 (user setup)
VSCode Version: 1.99.3
Commit: a8e95743c5268be73767c46944a71f4465d05c90
Date: 2025-07-10T17:09:01.383Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.19045

1 Like

Just popped up for me and it happened after I already used it a min prior. Strange.

1 Like

Seems to happen to me about 70% of requests now. I’ve called it a day because of it. Starting a new chat doesn’t fix it either.

Also getting an issue where I don’t necessarily get the error, but it “unsends” the prompt I’ve sent and just infinitely says “Summarizing chat…” even on a new chat. Very strange.

For the last hour, I’ve been stuck with the same problem. I’m on a paid plan (Pro / Pay-as-you-go), so it’s frustrating that I can’t use the service I’m paying for. I’ve had to constantly start new chats and re-enter the same data, which has made everything very confusing. I’m calling it a day.

1 Like

I switched to gpt-5 since this error and it seems to work well.

1 Like

+1, I can’t switch to another model, because this model was working well for my project. I used new pricing when I reached the rate limit, I tried to switch the model in the working chat, the AI agent became an “idiot” and polluted the chat.

1 Like

Not an option for me, unfortunately. I’m neck deep in a large project that has been built with claude-4-sonnet-thinking from day 1 and I don’t want to run the risk of destructive changes, different coding patterns, etc.

The alias looks like a typo, or it may have changed. It’s: “claude-sonnet-4-0”

Or try the exact model: “claude-sonnet-4-20250514”

Ref: Models overview - Anthropic