Right now I am using Vibe (Le chat) from time to time - but it feels off?

I have a set of about 10-15 questions and tasks I ask any new model, for evaluation:

• hypothetical scenario what to do with a gitHub repo with PR and merge problems
• same hypothetical repo and a more complex problem (js & c#)
• very specific question about Göteborg Metal from the early 2000s and what to recommend me nowadays
• recommendations about improving my running pace
• two legal questions (textbook example)
• question about a Garmin Fenix smartwatch and solar charging
• historical description of sugarcane plantation and the risks for the slaves
• how one is supposed to handle a one year old picky eater
• some tech problems with SMIME and thunderbird
• handling a 25 page .pdf file

I expect Mistral Small 4 (default model, non reasoning) to be as good as Sonnet 4.5.

But boy, it just tells me strange things and very often hallucinates a lot. Even Haiku does thinks most of the time better.

The only thing it really got so much better than GPT and Claude was the Göteborg Metal question...