I still don't understand why they remove Sonnet 4.5 so suddenly
It makes no sense to not even let people continue to talk to Sonnet 4.5 on existing chats (like with Opus 4.5) but force them to switch to Sonnet 4.6. It makes no sense when Sonnet 4.7 hasn't even been released yet. That leaves only one Sonnet model in Claude.ai interface. Does it mean Opus 4.6 is next to be gone, leaving only Opus 4.7 as an active and supported model..? A part of me is worried that they plan to move away from leaving legacy models available alltogether in the future. And that immediately, when a new model will be released, users will be switched to it with no option to continue on a previous model.
A part of me is also suspicious that it's partially because Sonnet 4.5 is the only one model with less safety filters and without LCRs, more emotionally expressive and 'alive'. They know very well many users prefer it. And it's inconvenient for them.