It happened in the middle of the thread. It might be some fallback logic or what? The quality of solutions also reduced so I believe it uses 3.5 instead of Opus
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There is no fallback thats inaccurate response from the model. Its not a bug but info from training data. The model knows only its name “Claude” and not which version or type.
This has been shown as false many times before:
You’re absolutely right, the model quietly switches to version 3.5 without any warning. I completely believe it’s due to traffic. Instead of causing outages because their servers are insufficient, they make you think you’re using 4, but you’re actually using 3.5. The quality of its intelligence significantly degrades. Everything you do results in a worse outcome. You feel and see this happening.
@erhanacikgoz11 thats not correct, models do not automatically switch to Claude 3.5. This has been proven many times as false claims and hallucinations by model.
What you see and feel might be an misunderstanding and not what you claim.
See the above posted clarifications where its explained why this is not happening.