Is this website definitely legit?

Are you sure real models are being used here? It's just that Claude 4.7 Opus gave the wrong cutoff date when I asked him. He also incorrectly named all the models in his family.

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Models are not self-aware, some models know their name because sometimes it's in their system prompt, but many don't. This happens not only on this platform but on most. The difference is Miniapps' system prompts are up to their creators to define, while other platforms (ie. ChatGPT official app) the models have a lot of information about themselves in the system prompt.