True, it's always important to be careful with chatbots, even when used for simple tasks.
From my experience, they work fairly well when asked to explain code or error logs. For reference, I mainly tested Gemini and Deepseek. Apparently Claude is the best for coding, but I haven't really tried it yet.
Personally I'd avoid both Mistral and Copilot. I used to work on Copilot, so unfortunately had a lot of exposure to it. Tried Mistral for a while too.
These two are the worst LLMs I've used so far. Honestly probably worse than local Qwen with 27-35B parameters. I feel a little bad hating on a European company, but unfortunately it's way behind competition. At least from my testing.