[Screenshot 2025-06-03 at 11.08.55] Over the last two days, I have observed a significant degradation in Cloud Sonnet 4. Today, I checked the model, and it replied that it is version 3.5. Model 4 thinking identifies itself as 4. Two days ago, the results were fantastic, but today, its output is te…

This has been debunked as false response by Claude so many times in the forum. Anthropic does not give the models an number, they are just called ‘Claude’. Since Claude 3.5 Sonnet was in the training information of Claude 4 it is known and sometimes Claude 4 hallucinates the name.

Then why sometimes it shows me “claude-3.5-sonnet” even when I select “o3”? Do you say that it’s also because claude models were in training data for gpt-o3?

Could you please post a request ID that can be analyzed by Cursor Team (privacy disabled for that request where you reproduce it)? I have never heard it happening cross model before so only a proper analysis can address your question. Cursor does not route o3 requests to Claude 3.5 sonnet.

This still doesn’t change the fact that Claude 4 acts more like chatgpt with emojis and only providing broken text (unless my setup is just wrong)? I have only got claude 3.5 to work (Only referencing anthro LLM)

Thanks for your reply. When you make statements like ‘only providing broken text’ without a proper example or a full bug report there is nothing I can review to give you feedback or ask Cursor Team to investigate a bug. Yes some models use emojis, you can ask them not to do that. Thats not issue o…

To clarify, it would not pertain or stay in boundaries within my explicit rules given. I had much more success with Claude 3.5 with more intuitive task or comprehensive ones than I would with Claude 4. To expand on this, Claude 4 would only provide emojis even when told not to not to mention the lac…

Right, I had the same issue when switching from Sonnet 3.5 to 4. My prompts, rules and documentation that worked so well for 3.5 didnt work at all with 4 (or 3.7). I tried different approaches and found that 4 does work well with many details and so strict rules or requirements. As it is a hybrid r…

Cloude Sonnet 4 works as 3.5

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Xernive (Xernive) July 2, 2025, 1:25am 10

Sometimes I just feel like they have a mind of there own XD

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Cloude Sonnet 4 works as 3.5

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