[Bug] Model switching from Haiku to Opus despite explicit model selection

Bug Description
hey anthropic, can you PLEASE for the love of god stop switching my fable to opus???????? I PAY for fable and want fable to perform the complicatted tasks not opus! I am not working on nuclear secrets, we are building a form builder and we are about to launch and need Fable! Why do you keep flipping it to Opus! Come on!

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.206
• Feedback ID: 9387f7bb-1d95-49db-9263-3b90fd3d3508

Errors

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